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Integrated Monitor System of Water and Fertilizer of Greenhouse Intelligent Irrigatio 被引量:2
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作者 蔡长青 郑萍 张继成 《Agricultural Science & Technology》 CAS 2017年第8期1465-1469,1523,共6页
The integration of water and fertilizer is a comprehensive technology combined irrigation and fertilizer, which has outstanding advantages of saving fertilizer, saving water, saving labor, protecting environment, high... The integration of water and fertilizer is a comprehensive technology combined irrigation and fertilizer, which has outstanding advantages of saving fertilizer, saving water, saving labor, protecting environment, high yield and high efficiency. Currently, most of the water and fertilizer integrated irrigation and fertilization and irrigation operation in the production-based greenhouse is achieved relying on artificial experience, which is hard to achieve timely, scientific and intelligent irrigation. In this study, the application of STM32 embedded system realized the real-time collection of the data from the humidity sensors buried in top, middle and low depth of soil, and water and fertilizer integrated irrigation work was completed in the greenhouse through automatic control according to the predetermined fertilization and irrigation strategies for different crops. Moreover, the system had remote monitoring function, which used the global system for mobile (GSM) module to provide users with remote short message services, and therefore, the users could not only achieve the remote intelligent monitoring on the irrigation, light, ventilation of the greenhouse through short messages, but also could start and stop the remote control system operation, so as to realize the automatic management of the greenhouse environment, achieving the purpose of remote fertilization and water-saving irrigation. 展开更多
关键词 Intelligent greenhouse Integration of water and fertilizer SIM32 He-mote monitoring GSM
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Green High-yield and High-efficiency Cultivation Techniques of Integrated Management of Water and Fertilizer for Maize under Mulch Drip Irrigation
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作者 Guangbin YANG 《Plant Diseases and Pests》 CAS 2023年第3期22-26,共5页
The green high-yield and high-efficiency cultivation techniques of integrated management of water and fertilizer for maize under mulch drip irrigation are described from the aspects of high yield target of maize and i... The green high-yield and high-efficiency cultivation techniques of integrated management of water and fertilizer for maize under mulch drip irrigation are described from the aspects of high yield target of maize and its component factor indexes,pre-sowing preparation,sowing,post-sowing management,field management at the seedling stage,integrated management of water and fertilizer for target yield of maize,rational application of micro-fertilizer,comprehensive prevention and control of diseases and pests,timely harvest,etc.,in order to provide a reference for agricultural technicians,maize farmers and maize industry development in northern Xinjiang. 展开更多
关键词 Mulch drip irrigation MAIZE integrated management of water and fertilizer Cultivation techniques
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Coupling Aquaculture—Crop Productions and Using of Water Drained from Ponds Rearing Clarias gariepinus as Fertilizer for Okra Production (Abelmoschus esculentus var. Clemson spineless, L. Moench)
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作者 Louis Dossou Magblénou Justin Kantoussan +2 位作者 César Bassène Dieynaba Yacine Mar Gueye Hamath Sy 《Open Journal of Applied Sciences》 2024年第9期2628-2647,共20页
The present study concerns the revalorization of drained water from aquaculture ponds rearing Clarias gariepinus on okra crops. The rearing was carried out at the farm of Gaston Berger University in 100 m2 ponds. In e... The present study concerns the revalorization of drained water from aquaculture ponds rearing Clarias gariepinus on okra crops. The rearing was carried out at the farm of Gaston Berger University in 100 m2 ponds. In each pond, the individuals of C. garipinus with an average weight of 6 ± 0.3 g were stocked at a density of 11 per m2. The water temperature and pH were measured during the experiment. The control fishing is carried out every month to monitor variations in the weight and size of reared individuals. The plant production is carried out in elementary plots measuring 3 m × 1.5 m. Each plot was fertilized with either: drained water from C. gariepinus rearing (DWC), poultry droppings (PD), cow dung (CD) and mineral fertilizer (NPK). Treatments are carried out in tripliqua with either river water (RW), RW + the recommended dose of NPK (RD-NPK), RW + RD-PD, RW + RD-CD, DWC, DWC + 25% RD-NPK, DWC + 50% RD-NPK, DWC + 75% RD-NPK, DWC + 25% RD-PD, DWC + 50% RD-PD, DWC + 75% RD-PD, DWC + 25% RD-CD, DWC + 50% RD-CD, DWC + 75% RD-CD. Growth parameters and yield of okra were determined. The average temperature in the rearing environment was 27.6 ± 1.5˚C and pH 7.9 ± 1.1. After six (06) months of rearing, C. gariepinus individuals reached an average weight of 850.12 ± 1.3 g and an average height of 52.44 ± 1.1 cm. The daily weight gain and specific growth rates over this period were 3.9 g per day and 2.8% per day, respectively. The treatment T1 (RW + DR-NPK) gave the highest mean collar diameter and mean plant height with 2.3 ± 0.9 cm and 61.6 ± 32 cm, respectively. In T4 (DWC), the mean height of plants was 38.8 ± 23.5 cm and mean collar diameter 1.4 ± 0.8 cm. The growth performance in T4 was comparable to that of RD-CD (T3), but different from RD-NPK (T1) and RD-PD (T2). The highest average number, average weight, average length and average diameter of fruits were noted in treatments T13 (RW + RD-75%CD) and T7 (DWC + 75% RD-NPK). The best yields were noted in T1 (RW + RD-NPK) = 10.8 ± 5.4 t·ha−1, T5 (DWC + 25% RD-NPK) = 9.2 ± 4.6 t·ha−1 and T4 (DWC) = 8.6 ± 4.3 t·ha−1 which are comparable and higher than those obtained in T2 = 5.7 ± 2.8 t·ha−1 and T3 = 7.5 ± 3.8 t·ha−1. 展开更多
关键词 integrated Aquaculture Drained water FERTILIZATION C. gariepinus OKRA
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Design and Application of Water, Fertilizer and Pesticide Integrated Automatic Control Device 被引量:4
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作者 Huang Wei Lu Meiling +2 位作者 Liang Xin Zhu Yulin Wang Daobo 《Plant Diseases and Pests》 CAS 2020年第1期30-32,共3页
Integration of water, fertilizer and pesticide is the final stage of agricultural development, which improves the utilization efficiency of water, fertilizer and pesticide. Starting from the design and realization of ... Integration of water, fertilizer and pesticide is the final stage of agricultural development, which improves the utilization efficiency of water, fertilizer and pesticide. Starting from the design and realization of water, fertilizer and pesticide integrated automatic control device, the paper discusses selection and application of fertilizer pesticides, use procedure, water, fertilizer and pesticide saving effect and receptive crowd in the application process of modern planting industry, so as to provide the basis for promotion and popularization of water, fertilizer and pesticide integration. 展开更多
关键词 AUTOMATIC control DEVICE INTEGRATION water fertilizer PESTICIDE
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Effects of Different Water-soluble Fertilizers on Yield and Quality of Strawberry under Integrated Application of Water and Fertilizer 被引量:1
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作者 Rong KANG Jianbiao NIU +1 位作者 Zhengren CHEN Jizu ZHANG 《Asian Agricultural Research》 2018年第12期59-61,66,共4页
Taking Hongyan strawberry as the material and PE drip irrigation tape and fertilizer applicator as the tool of integrated application of water and fertilizer,this experiment studied the effects of six fertilizers incl... Taking Hongyan strawberry as the material and PE drip irrigation tape and fertilizer applicator as the tool of integrated application of water and fertilizer,this experiment studied the effects of six fertilizers including Batian,Jiashili,Wangdefeng,Stanley,volfertile and calcium protein on yield and quality of strawberry. The experimental results showed that different water-soluble fertilizers had different effects on the main economic traits of strawberry. For the maximum single fruit mass,the highest was volfertile treatment( 28. 72 g),followed by calcium protein treatment,and the lowest was Stanley treatment( 23. 89 g). The fruit treated with Batian,volfertile and calcium protein was hard in the texture,the fruit treated with Wangdefeng was harder,that of Stanley was softer,and that of Jiashili was soft. The strawberry fruit treated with Wangdefeng and calcium protein was sweet,the fruit treated with volfertile and Batian was sweet,that treated with Jiashili was sour and sweet,and that treated with Stanley was slightly sour. The fruit treated with calcium protein,volfertile and Batian showed strong storage resistance.Strawberry plants treated with Batian,Wangdefeng,Stanley,and calcium protein showed stronger growth,and strawberry plants showed a semi-opening pattern. The yield of strawberry treated with volfertile was highest( 17 400 kg/ha),which was significantly increased compared with other treatments,followed by that treated by Stanley( 13 140 kg/ha). 展开更多
关键词 water soluble fertilizer integrated APPLICATION of water and fertilizer Strawberry Yield Economic traits
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Application Effect of Integrated Water and Fertilizer Technology for Tomato 被引量:1
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作者 Haimin KONG Ruohui LU 《Asian Agricultural Research》 2017年第11期62-65,共4页
Integrated water and fertilizer technology has the advantages of saving water,fertilizer and labour,which is widely applied in tomato plantation. Integrated water and fertilizer technology in topdressing and whole pro... Integrated water and fertilizer technology has the advantages of saving water,fertilizer and labour,which is widely applied in tomato plantation. Integrated water and fertilizer technology in topdressing and whole process of big and small tomatoes were studied,and their application effects were contrasted and analyzed,and application advantages and scopes of the two models were concluded. 展开更多
关键词 TOMATO integrated water and fertilizer technology in whole process integrated water and fertilizer technology in topdressing
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Water and nitrogen transport characteristics of single-line interference infiltration under film hole irrigation with muddy water and fertilizer
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作者 JIANG Ruirui FEI Liangjun KANG Shouxuan 《排灌机械工程学报》 CSCD 北大核心 2022年第5期496-503,共8页
Based on the experimental data,this study investigated the effect of sand content of muddy water on water and nitrogen transport characteristics of the single-line interference infiltration under film hole irrigation ... Based on the experimental data,this study investigated the effect of sand content of muddy water on water and nitrogen transport characteristics of the single-line interference infiltration under film hole irrigation with muddy water and fertilizer.The relationship between the single-line interference infiltration parameters,the sand content,the wetting front movement distances,and the sand content were all established.The model of the cumulative infiltration volume of per unit film pore area,the vertical and horizontal wetting front movement distance of the free surface,and the wetting front movement distance of the interference center with sand content and infiltration time were proposed.Reveal the law of the change of soil water content and the distribution of NO_(3)^(-)-N content based on different muddy water sand content.The results indicate that at the same infiltration time,as the muddy water sand content increases,the cumulative infiltration volume per unit pore area decreases.The infiltration index of the free infiltration and the single-line interference vary little when the sand content increases,mainly are around 0.64 and 0.58.The relationship between infiltration parameters a,b and the sand content is linear function.At the same location,the more the sand content,the smaller the wetting front movement distance in free surface and the single-line interference surface,the less the NO_(3)^(-)-N content. 展开更多
关键词 film hole irrigation single-line interference infiltration muddy water fertilizer sand content NO_(3)^(-)-N content
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Growth, Yield and Water Use Effeciency of Forage <i>Sorghum</i>as Affected by Npk Fertilizer and Deficit Irrigation
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作者 Mohamed M. Hussein Ashok K. Alva 《American Journal of Plant Sciences》 2014年第13期2134-2140,共7页
Drought stress (DS) is an important limiting factor for crop growth and production in some regions of the world. Limitation in water availability precludes optimal irrigation in some production regions. Therefore, inv... Drought stress (DS) is an important limiting factor for crop growth and production in some regions of the world. Limitation in water availability precludes optimal irrigation in some production regions. Therefore, investigations on the interaction of other factors to mitigate the DS to varying degree are important. Two field experiments were conducted in the experimental farm of the National Research Centre, Shalakan, Kalubia Governorate, Egypt, during 2004 and 2005 summer seasons to evaluate the interactions between N, P, K rates and optimal vs. deficit irrigation regimes on biomass yield as well as water use efficiency (WUE) of forage sorghum. Omission of the 4th irrigation significantly decreased the biomass of sorghum c.v. Pioneer, as compared to that of the plants receiving optimal irrigation or subject to omission of the 2nd irrigation. The biomass yield increased with an increase in NPK fertilizer rates. Plant height and leaf area also decreased by omitting the 2nd irrigation as compared to that of the plants under optimal irrigation, and further declined with omission of the 4th irrigation. The biomass of the plants (dry weight basis) that received the high N, P, K rates was greater by 26%, 29%, and 35% as compared to that of the plants that received no N, P, K fertilizers, under optimal irrigation, omission of the 2nd, and omission of the 4th irrigation, respectively. The corresponding increases in water use efficiency (based on fresh weight yield) were 37%, 42%, and 55%. 展开更多
关键词 Sorghum-Forage-Omitting of irrigation-NPK fertilizer-Growth Yield-water Use Efficiency
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Effect of water and fertilizer coupling optimization test on water use efficiency of rice in black soil regions 被引量:4
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作者 LIN Yanyu ZHANG Zhongxue +1 位作者 XU Dan NIE Tangzhe 《排灌机械工程学报》 EI CSCD 北大核心 2016年第2期151-156,共6页
How to improve the water use efficiency of rice in black soil regions was studied. The black soil region in paddy fields was chosen as the research object. The research showed the fertilizer coupling mathematical mode... How to improve the water use efficiency of rice in black soil regions was studied. The black soil region in paddy fields was chosen as the research object. The research showed the fertilizer coupling mathematical model with N,P,K,irrigation water( W) and water use efficiency( WUE),which was set up under the condition of controlled irrigation with quadratic D- 416 optimized saturation design. The results show that the decending order of single factor' s influence on the WUE was N,K,P and W. All the interactions between N&P,N&K,N&W,K&P,P&W and K&W on the WUE were raised initially,and when reached a certain value,they began to decline. The decending order of each interaction on the WUE was K&P,K&W,N&K,N&P,P&W and N&W. When the WUE was targeted within 1. 8- 2. 5 kg / km^3,an optimized proportion plan was obtained in the 95% confidence interval,i. e. N 87. 76- 103. 32 kg / hm^2,K_2 O 52. 37- 66. 53 kg / hm^2 and P_2O_536. 80- 46. 71 kg / hm^2. Furthermore,the late tillering of the soil moisture content was 70. 07%- 72. 57% of the saturated moisture content. 展开更多
关键词 black soil RICE controlled irrigation water and fertilizer optimization plan WUE
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Nitrogen and Phosphorus Loss Law and Emission Reduction Effects Under Water and Fertilizer Management Integrated Mode in Dike Paddy Field 被引量:2
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作者 GUO Longsheng ZHOU Guangtao GUO Zhongyuan 《Journal of Northeast Agricultural University(English Edition)》 CAS 2009年第4期31-37,共7页
To achieve the purpose of reducing farm non-point source pollution, we integrated site specific nitrogen management precise irrigation, controlled drainage, and wetland eco-repair system in dike area of Taihu basin. D... To achieve the purpose of reducing farm non-point source pollution, we integrated site specific nitrogen management precise irrigation, controlled drainage, and wetland eco-repair system in dike area of Taihu basin. During investigation, it had given prominence for the water and fertilizer coupling effects of precise irrigation and site specific nutrient management, the characteristics of integration on controlled irrigation, controlled drainage and wetland ecosystem non-point source pollution control. Then the water and fertilizer integrated management mode of paddy field was put forward in Taihu basin where the water production efficiency increased to 1.64 kg. m-3, water saved 37.8%, fertilizer use efficiency raised 15,4%, yield raised 10%, and N, P load decreased 26%-72%. The modern agricultural and farmland ecosystems that control and cut down the farm non-point source pollution came into being, which can be a reference by Taihu basin to control its agricultural non-point source pollution and eutrophicated water body. 展开更多
关键词 paddy field the integrated mode of water and fertilizer management non-point source pollution nitrogen and phosphorus loss
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Distribution Characteristics of the Heavy Metal Cd in the Irrigation Water-Cultivated Soil-Fertilizer-Crop Ecosystem
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作者 Lei HUANG Peihao PENG Wende CHENG 《Asian Agricultural Research》 2013年第6期86-89,共4页
Shuangqiao Countryside of Neijiang City in hilly ground area in the midland of Sichuan Province was chosen as the study geographic area to survey and analyze the content distribution characteristics of the Cd in the i... Shuangqiao Countryside of Neijiang City in hilly ground area in the midland of Sichuan Province was chosen as the study geographic area to survey and analyze the content distribution characteristics of the Cd in the irrigation water,ground water mud,surface layer cultivated soil,profile soil and the fertilizer which were often used in the locality,and in different crops set earth,fructification as well. The results showed that the content of Cd in the irrigation and ground water mud respectively comply with the national agriculture use irrigation standard and the contamination control standard value in agriculture use mud ( GB4284-84) respectively. The average contents in the surface cultivated soil and each layer of soil profile are all above the background level of Chengdu economic region ( 44% ) ,referring to a large scale pollution risk. The average value of Cd element in fertilizer was 1. 81 μg / g,which was higher than the third class standard of national soil environment quality; The average content of Cd element in the crops' set earth was 0. 410-0. 439 μg / g,which was higher than the second class standard of national soil environment quality and there was a measure of cumulation; The average values of Cd in crops' fructificationwas all below the primary standard of national soil environment quality,and the bioamplification coefficient sorting was CF( Cdpeanut) > CF( Cdcitrus) > CF ( Cdrice) > CF( Cdcorn) . Irrigation water had little influence on the soil Cd pollution,where fertilizer using was closely related to the Cd pollution in the surface cultivated soil in the survey area and had a certain influence on the Cd cumulation in the crops. The sorption and enrichment of crops' set earth and fructification was obviously different. 展开更多
关键词 Cd irrigation water SOIL fertilizer CROP
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Effects of drip irrigation modes on growth and physiological characteristics of Arabica coffee under different N levels 被引量:3
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作者 HAO Kun LIU Xiaogang +4 位作者 HAN Zhihui WU Helin YU Ning LIU Yanwei YANG Qiliang 《排灌机械工程学报》 EI CSCD 北大核心 2017年第10期912-920,共9页
The objective of this study was to obtain the water-saving and efficient production mode of Arabica coffee. The effects of three drip irrigation modes,conventional drip irrigation( CDI),alternate drip irrigation( ADI)... The objective of this study was to obtain the water-saving and efficient production mode of Arabica coffee. The effects of three drip irrigation modes,conventional drip irrigation( CDI),alternate drip irrigation( ADI) and fixed drip irrigation( FDI) on growth,photosynthetic characteristics,biomass accumulation and irrigation water use efficiency of Arabica coffee were investigated under three nitrogen levels,high nitrogen( NH),middle nitrogen( NM) and low nitrogen( NL). The results show that there was a significant Logistic curve between the plant height,the stem diameter of Arabica coffee and growth days. Compared with CDI,ADI had no significant effects on leaf net photosynthetic rate,stomatal conductance,instantaneous water use efficiency and biomass accumulation above ground of Arabica coffee,while FDI decreased significantly,ADI and FDI increased irrigation water use efficiency by 50. 59% and 32. 85%,respectively. Compared with NH,with the reduction of N application rate,net photosynthetic rate,stomatal conductance,biomass accumulation above ground and irrigation water use efficiency decreased by 6. 81%-12. 30%,13. 70%-22. 69%,9. 61%-16. 67% and 9. 78%-15. 64%,respectively. Compared with CDINH,ADINHdecreased net photosynthesis rate and the stomatal conductance not significantly,other treatments decreased by 9. 16%-19. 22%,14. 49%-32. 91%,and decreased biomass accumulation above ground by 8. 26%-27. 34% except ADINH,and increased irrigation water use efficiency by 16. 46%-60. 95% except CDINMand CDINL. Therefore,alternate drip irrigation under high N level( ADINH) is the best water and nitrogen coupling mode of young Arabica coffee tree for water efficiency. 展开更多
关键词 Arabica coffee drip irrigation modes nitrogen fertilizer photosynthetic characteristics biomass accumulation irrigation water use efficiency
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Study of the Inhibitor Scaling Effect of the Agricultural Water by a Phosphate Fertilizer
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作者 Abdallah Hadfi Said Ben-Aazza +2 位作者 M’barek Belaatar Naima Hafid Ali Driouiche 《Journal of Water Resource and Protection》 2015年第15期1234-1241,共8页
The localised irrigation or drop by drop system is a technique which makes it possible to save water, because it ensures a balanced and efficient distribution of water and an effective fertilization. However, this fer... The localised irrigation or drop by drop system is a technique which makes it possible to save water, because it ensures a balanced and efficient distribution of water and an effective fertilization. However, this ferti-irrigation system is facing a number of problems hindering the agricultural development. The lack of uniformity of the localised irrigation was observed and found out that it is due to chemical clogging of drippers. Considering the complexity of the composition of the natural water used in micro-irrigation, we started our study by examining the effectiveness of the inhibitor on pure calco-carbonic water with 40°F, and then moved to explore the natural water of the agricultural region. The Legrand-Poirier-Leroy method allowed us to determine the position of the irrigation water compared to calco-carbonic balance. LCGE (abbreviation of “Laboratory of Chemistry and Environmental Engineering”) technique, based on the accelerated formation of calcium carbonate deposit under the effect of a degasification of studied water, enabled us to evaluate the scaling power of this water of irrigation either with or without inhibitor. The experimental results showed the following: in the case of pure calco-carbonic water with 40?F and of natural water, the addition respectively of 2 mg/L and 2.25 mg/L of phosphate fertilizer completely inhibits the precipitation of calcium carbonate under the conditions of the experiment. 展开更多
关键词 SCALING Power water irrigation Calcium CARBONATE INHIBITOR PHOSPHATE fertilizer
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Effect of Irrigation and Fertilization on Population Structure and Yield of Wheat
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作者 Minmin SHAO Leiming SUN +6 位作者 Xingke XU Kai ZHAO Ling HUANG Weiying FENG Jifeng WANG Lu YAN Lin WANG 《Agricultural Biotechnology》 CAS 2020年第2期21-24,共4页
[Objectives] This study was conducted to investigate the effects of irrigation and fertilization on population structure and yield of wheat.[Methods]With Shannong 29 as an experimental material,the effects of irrigati... [Objectives] This study was conducted to investigate the effects of irrigation and fertilization on population structure and yield of wheat.[Methods]With Shannong 29 as an experimental material,the effects of irrigation and fertilization on population,dry matter accumulation and yield of wheat were studied.[Results]Integrated water-saving irrigation and fertilization of ridged field was the best with the highest population,dry matter accumulation and yield of wheat.[Conclusions]This study provides a theoretical basis for high-yield and high-efficiency wheat production with saved water and fertilizers. 展开更多
关键词 irrigation FERTILIZATION WHEAT INTEGRATION of water and fertilizer YIELD
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Sustainable Water Management for Urban Agriculture, Gardens and Public Open Space Irrigation: A Case Study in Perth
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作者 Raju Sharma Dhakal Geoff Syme +1 位作者 Edward Andre Charles Sabato 《Agricultural Sciences》 2015年第7期676-685,共10页
Urban agriculture has been increasingly popular as a form of modern agriculture in urban settings. It includes community gardens, fruit orchards, home gardens, veggie patches, public open spaces, reserves, urban fores... Urban agriculture has been increasingly popular as a form of modern agriculture in urban settings. It includes community gardens, fruit orchards, home gardens, veggie patches, public open spaces, reserves, urban forest, and recreational landscaping. However, irrigation using urban water supply has been identified as a major constraints for the development of urban agriculture. This study presents a sustainable water management trial at Butler, a northern sub-urban development in Perth, Western Australia, for urban irrigation. The trial system consists of a number of water saving features including untreated fit-for-purpose groundwater supplied via a third pipe network, drip irrigation, local weather station, soil moisture sensors connected with a local weather station, night time irrigation, soil enhancement with conditioning and mulching, and use of native plants and vegetation. The trial outcome was compared against controlled areas in terms of irrigation efficiency and sustainable water management for urban agriculture. The study demonstrated that a fit-for-purpose irrigation along with water sensitive land management could be a sustainable alternative for urban agriculture that would achieve a significant water saving and irrigation efficiency at urban settings. However, quality of untreated groundwater can be an issue while utilizing it for irrigation, but the research has shown that it can be managed with innovative irrigation techniques. This indicates that the fit-for-purpose irrigation system with water sensitive land management practices would be highly supportive in sustainable development of urban agriculture, vegetation and recreational landscaping. 展开更多
关键词 URBAN AGRICULTURE SUSTAINABLE irrigation System integrated Land and water Management
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Oxalate Content of Miner’s Lettuce Irrigated with Water or Fertilizer Solutions
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作者 Madhuri Kanala Geoffrey P. Savage 《Food and Nutrition Sciences》 2016年第13期1290-1296,共7页
The total, soluble and insoluble oxalate contents of the small, large and cauline leaves and small and large stems of miner’s lettuce (Claytonia perfoliata ) plants which had been irrigated with tap water or a solubl... The total, soluble and insoluble oxalate contents of the small, large and cauline leaves and small and large stems of miner’s lettuce (Claytonia perfoliata ) plants which had been irrigated with tap water or a soluble fertilizer were extracted and measured using HPLC chromatography. Overall, all plant parts of miner’s lettuce analyzed contained high levels of total and soluble oxalates;however plants irrigated with fertilizer contained lower levels of oxalates compared with plants irrigated with water. On a dry matter basis, the small leaves contained higher levels of total oxalate when compared to the total oxalate in the large leaves. Soluble oxalate in the leaves of plants irrigated with water ranged from 2.6 to 7.5 mg/100g dry matter (DM) and was significantly higher (P < 0.05) than the leaves of the fertilizer-watered plants, which ranged from 1.8 to 2.8 mg/100g DM. The soluble oxalate in the small and large stems of the fertilizer-watered plants ranged from 1.20 to 1.5 mg/100g DM and was significantly lower (P < 0.05) than the water-treated small and large stems, which ranged from 3.75 to 4.4 mg/100g DM. It is recommended that the leaves of miner’s lettuce should be consumed in moderation. 展开更多
关键词 Miner’s Lettuce OXALATES fertilizer water irrigation
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智能传感技术在水肥一体系统中的应用研究
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作者 祝鹏 郭艳光 《农机化研究》 北大核心 2025年第2期176-180,共5页
以进一步提升水肥一体机系统的作业效率为目标,选取智能传感的监测技术,针对整机的监测控制与信号处理展开应用设计研究。考虑水肥一体机过程作业肥液融合的均匀性及系统各模块之间的协同性功能实现,结合微分补偿的传感数据算法处理方法... 以进一步提升水肥一体机系统的作业效率为目标,选取智能传感的监测技术,针对整机的监测控制与信号处理展开应用设计研究。考虑水肥一体机过程作业肥液融合的均匀性及系统各模块之间的协同性功能实现,结合微分补偿的传感数据算法处理方法,进行智能传感的水肥一体机架构布局,并匹配可执行的软件控制程序及硬件实施结构,进行实地传感应用监测与灌施控制作业试验。结果表明:水肥一体机系统的数据监测准确率可达95.25%,系统故障率相对降低3.79%,监测数据准确及时,能够确保系统各环节指令得到有效的调整与反馈,进而保证灌施土壤的含水稳定率相对提升7.87%,对于作物的稳定生长与产量提升有重要的参考价值。 展开更多
关键词 水肥一体机 智能传感 信号处理 微分补偿 数据监测准确率
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主路式水肥一体机施肥系统的设计与试验
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作者 李擎 李家春 +1 位作者 熊贤沙 蔡家斌 《农机化研究》 北大核心 2025年第2期68-74,共7页
针对现阶段水肥一体化设备存在施肥不均、自动化程度不高及滞后性严重的问题,根据现代化农业节水省肥和减少环境污染的灌溉要求,设计了一款可实现自动混肥、施肥、节水灌溉的主路式水肥一体化施肥机。根据液肥的EC和pH值调节过程的特点... 针对现阶段水肥一体化设备存在施肥不均、自动化程度不高及滞后性严重的问题,根据现代化农业节水省肥和减少环境污染的灌溉要求,设计了一款可实现自动混肥、施肥、节水灌溉的主路式水肥一体化施肥机。根据液肥的EC和pH值调节过程的特点,开发了以SIEMENS S7-1200为核心的液肥控制系统硬件,并结合MatLab设计了以模糊PID为控制器的液肥EC和pH值控制系统。为验证施肥机在实际应用中的精确性和鲁棒性,设计了施肥系统动态调节性能试验,结果表明:在施肥阶段,模糊PID控制系统具有较短的稳态时间和较小的超调量,相比于PID控制系统,对EC和pH值进行调节的稳态时间分别减少了37.7%和52.1%,稳态超调量分别降低了1.2%和2.2%,可实现对混肥溶液进行迅速有效的调节,满足现代农业实际生产需要。 展开更多
关键词 水肥一体化 施肥机 模糊PID 过程控制
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大田水肥一体化混肥器设计与试验研究
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作者 刘文亮 杨然兵 +2 位作者 潘志国 马振家 刘仕泽 《农机化研究》 北大核心 2025年第2期139-145,共7页
由于当前市场上没有既适合大田大面积灌溉、混肥精度又高的水肥一体化系统,故在旁路式结构设计中增加静态混合器替换主管道,以提高混肥均匀性为重点进行研究,对混肥部件进行了优化改进。利用混合器自身结构,在不需要外接能源的条件下,... 由于当前市场上没有既适合大田大面积灌溉、混肥精度又高的水肥一体化系统,故在旁路式结构设计中增加静态混合器替换主管道,以提高混肥均匀性为重点进行研究,对混肥部件进行了优化改进。利用混合器自身结构,在不需要外接能源的条件下,使得水肥充分混合,不仅能够满足大面积灌溉要求,而且可以保证混肥精度。基于流体力学及CFD基本原理,通过Fluent软件分析水肥混合过程中SK型静态混合器混合单元数,以及长径比对水肥混合性能和压降的影响,以此找出混合器的最佳结构参数,并对其结构做了改进,设计出了开沟式静态混合器。 展开更多
关键词 水肥一体化系统 静态混合器 混肥精度 开沟式
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基于数值分析法的水肥一体机设计研究
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作者 底慧萍 李喆时 《农机化研究》 北大核心 2025年第2期186-189,194,共5页
以进一步提升水肥一体机的智能性、数字性作业为目标,针对整机的灌施精准性要求展开设计。充分考虑水肥一体机的运用特点和结构组成,结合水肥的参数融合关系,建立用于水肥一体机准确控制作业的状态方程模型,设计以数值分析处理函数为核... 以进一步提升水肥一体机的智能性、数字性作业为目标,针对整机的灌施精准性要求展开设计。充分考虑水肥一体机的运用特点和结构组成,结合水肥的参数融合关系,建立用于水肥一体机准确控制作业的状态方程模型,设计以数值分析处理函数为核心的软件控制模块,搭建同步动作实施的硬件执行平台。展开多作物的灌施作业试验,结果表明:基于数值分析方法的水肥一体机系统架构设计合理,数值分析算法融入有效,整机试验的数值计算准确率可达98.00%以上;水肥混合均匀有度,整体管路灌施顺畅,灌施指令准确率可达99.00%以上,整机灌施效率较高,充分验证了数值分析方法应用的正确性与优越性,可以促进类似农机装备与高等数学多维度融合。 展开更多
关键词 水肥一体机 数值分析 状态方程 灌施指令准确率 多维度融合
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