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Reconstruction of Highly-efficient Smash-ridging Ecological Cultivation Method for Sustainable Yield-increasing of Soil Plough Layers 被引量:4
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作者 韦本辉 《Agricultural Science & Technology》 CAS 2014年第9期1526-1529,共4页
With consideration of highly-efficient use of natural resources, reducing production cost and construction of high-standard agricultural fields, rice production of good seed+fertilizer investment is reformed on basis... With consideration of highly-efficient use of natural resources, reducing production cost and construction of high-standard agricultural fields, rice production of good seed+fertilizer investment is reformed on basis of research of smash-ridging technology, and rice smash-ridging ecological and highly-efficient cultivation was pro- posed, namely, smash-ridging based deeply poughing and rotary tillage technology was used to loosen soils deeply, with the depth from 13-15 cm to 26-28 cm. Fur- thermore, after soils softening, seedling slinging or direct seeding was adopted, which is dominated by natural rainfall and supplemented by artificial irrigation. The test proved that the technology help increasing yield and profits over 20%, with chemical fertilizer reduced by more than 10%, and labor cost reduced by 10%. What's more, if the technology applied once, no-tillage or slight tillage is recom- mended in the field, which would maintain original eco-conditions of soils and reach high yield, with energy, water, labor costs reduced in an environment-friendly way. 展开更多
关键词 Powder ridge Plough layer reconstruction Ecological cultivation Sus- tainable yield-increasinq by 20% Rice
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The Training Model and Development Route of Market-oriented Professional Farmers
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作者 李彬 《Agricultural Science & Technology》 CAS 2016年第3期747-750,共4页
To cultivate new professional farmers is a key way for rural labor development, resolving existing problems such as how to farming. It is notable that government and market take advantages in training of new professio... To cultivate new professional farmers is a key way for rural labor development, resolving existing problems such as how to farming. It is notable that government and market take advantages in training of new professional farmers. Therefore, it is necessary to guarantee government and market playing the roles. The research explored market-oriented farmer training model and the characteristics and investigated training routes for new professional farmers. 展开更多
关键词 New professional farmers Market-oriented training model Development route
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Manifestations in Yield and Agronomic Traits of Sorghum 'Jia141' in Jiamusi Area
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作者 申晓慧 《Agricultural Science & Technology》 CAS 2016年第11期2578-2581,共4页
The suitable plant density was favorable for sorghum yield increase. In order to clarify the suitable plant density of dwarf-stem, early-maturing sorghum variety 'Jiza141 ', in the open field condition,150 000, 200 ... The suitable plant density was favorable for sorghum yield increase. In order to clarify the suitable plant density of dwarf-stem, early-maturing sorghum variety 'Jiza141 ', in the open field condition,150 000, 200 000, 250 000, 300 000 and 350 000 plants/hm^2 tests were set to study the effect of different densities on yield and yield traits. The results showed that with the increase of planting density, LAI increased, chlorophyll content decreased, plant length had no significant difference, era length and era diameter tended to decrease, while biomass increased with the increase of density. The 1000-grain weight and single panicle weight had the maximum effects on yield, and both of them showed a significantly positive correlation with the yield. In Jiamusi growing areas, the optimal plant density of sorghum 'Jiza141' was 200 000 plants/hm^2, and the yield could reach 9 183.00 kg/hm^2. The study provides a theo- retical basis and technical support for the 'Jiza141' variety in the Jiamusi ecological region. 展开更多
关键词 SORGHUM Plant density Agronomic Character Productivity Potential YIELD
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微信和微课在农村劳动力培训中的妙用
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作者 陈德柱 《启迪与智慧(上)》 2020年第6期78-78,共1页
本文针对苍南县金乡片区农村劳动力培训中存在的问题,提出了以微课作为补充手段,微信作为交流平台的解决方案,并详细介绍了具体操作方法和注意事项。为农村劳动力培训中教师和学员之间如何增强互动增进沟通最终提高培训效果提供一种参考。
关键词 微信 微课 农培 教学手段
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Major Cultivation Technology of HQ No.1, a New Flue-cured Tobacco Cultivar
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作者 李文宇 李爱华 《Agricultural Science & Technology》 CAS 2015年第3期497-499,共3页
The transplanting period, density, the number of left leaves and fertilizer amounts of HQ No.1 were explored in Hengyang. The results showed that with transplanting periods of March 5-March 15, and planting space of 1... The transplanting period, density, the number of left leaves and fertilizer amounts of HQ No.1 were explored in Hengyang. The results showed that with transplanting periods of March 5-March 15, and planting space of 120 cmx(50-60) cm, agronomic and economic characters of tobaccos showed insignificant differences. Specifically, plant height was growing upon the number of left leaf and fertilizer amount; tobacco yield and output value kept increasing upon fertilizer, and both reached maximums with pure N at 195 kg/hm^2, showing significant differences with the treatment of pure N at 135 kg/hm^2; the number of left leaf had the least effects on agronomic and economic characters of tobaccos. The research indicated that highly-qualified HQ No.1 can be produced, given that tobaccos are transplanted during March 10-March 15, planting density of 15 000-16 500 seedlings/hm^2, the number of left leaves of 22-24 leaves per seedling, and pure N of 150-165 kg/hm^2 in Hengyang. 展开更多
关键词 Flue-cured tobaccos HQ No.1 Major cultivation technology Agronomic characters Economic character Tolerance to disease
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Comparative Study on the Structural and Moisture Characteristics of Leaf from the Plantlets of Three Types of Ornamental Lilium brownii 被引量:12
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作者 唐蓉 龚维红 +1 位作者 史文秀 韦梅芹 《Agricultural Science & Technology》 CAS 2009年第2期93-96,共4页
[ Objective] The study was to compare the structural and moisture characteristics of leaf from the plantlets of three types of omamental lily( Lilium brownii). [ Method ] The paraffin sections of leaves of tested li... [ Objective] The study was to compare the structural and moisture characteristics of leaf from the plantlets of three types of omamental lily( Lilium brownii). [ Method ] The paraffin sections of leaves of tested lily varieties were prepared and then observed under microscope, and the stomatal characteristics and moisture characteristics of tested lily varieties were measured. I Resaltl All the three ornamental lily varieties show isobilateral leaf, single layer of epicuticula and lower epidermis, and no obvious differentiation of palisade tissue and spongy tissue; their stomata distribute in lower epidermis, and the guard cells are dumbbell-shaped; all of these matedais present high moisture. For the leaf sick- ness, midrib sickness and mesophyll tissue sickness, the order was determined to be oriental lily 〉 Lilium/ongiflorum 〉 Asian lily; of the three types of ornamental lily, Ulium Iongiflorum has the largest stomatai aperture and Asian lily has the smallest; focusing the water potential and moisture, the turn was Asian lily 〉 oriental lily 〉 Lilium Iong'fflorum. [ Condusion] The study may facilitate the artificial regulation of the growth conditions of the plantlets of ornamental lily. 展开更多
关键词 Ornamental lily Leaf blade Moisture characteristics Test tubeseedling
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Thinking on the Cultivation of Professional Tobacco-growers in Yongfeng County
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作者 朱启元 韩助君 +1 位作者 曾宇 李慧兰 《Agricultural Science & Technology》 CAS 2017年第11期2193-2196,共4页
Taking the cultivation of professional tobacco-growers in Yongfeng County as an example, the importance of professional tobacco-growers cultivation was discussed, and the corresponding measures to cultivated the profe... Taking the cultivation of professional tobacco-growers in Yongfeng County as an example, the importance of professional tobacco-growers cultivation was discussed, and the corresponding measures to cultivated the professional tobaccogrowers in Yongfeng County were illustrated, with the aim to provide references for the stabilization of tobacco industry development, transformation of tobacco production modes, improvement of production management level, increase of farmers' income, and further promoting the development of modern tobacco agriculture construction. 展开更多
关键词 Tobacco leaf Occupational tobacco-grower CULTIVATION Measures
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Relationship between cultivated land use functions and land rental behavior of rural households:empirical evidence from different dominant functional regions in central China 被引量:4
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作者 Yayun Wang Yinying Cai 《Chinese Journal of Population,Resources and Environment》 2017年第3期262-272,共11页
This paper analyzes the relationship between the cultivated land use functions and the land rental decisions of rural households in three Dominant Functional Zones of Hubei, China. The results indicate that 41.10% of ... This paper analyzes the relationship between the cultivated land use functions and the land rental decisions of rural households in three Dominant Functional Zones of Hubei, China. The results indicate that 41.10% of the rural households in the study areas participated in the land rental market. The land rental market in the Key Development Zone has both a higher participation rate and land rent; the Agricultural Production Zone has a higher participation rate but a lower land rent; and the land rental market in the Key Ecological Zone is underdeveloped. The difference in regional function and economic level leads to a significant difference in the spatial variation of the cultivated land use multifunction. Overall, the cultivated land function of rural households has a significant impact on their land transfer behavior. The higher the Functions of Economic Contribution, Food Production, and Pension & Employment, the more willing the rural households are to rent in the land, while the higher the Function of Inheritance and Retainment of the cultivated land use, the more likely the peasants are to retain their cultivated land resources. Furthermore, the correlation coefficient is significantly higher in the Key Development Zone than in the Key Ecological Zone. 展开更多
关键词 Land rental cultivated landuse function rural householdspatial heterogeneity mainfunctional area Biprobitmodel
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Training and Rural Development in Some Countries of the European Union
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作者 Nicola Galluzzo 《Journal of Agricultural Science and Technology(B)》 2012年第4期461-470,共10页
The aim of this research was to value, using a multiple regression model, the role of knowledge to guarantee the development in rural areas of European Union countries over 10 years. The main question was to find out ... The aim of this research was to value, using a multiple regression model, the role of knowledge to guarantee the development in rural areas of European Union countries over 10 years. The main question was to find out relationships among some variable, as the percentage of national Gross Domestic Product (GDP) used to improve the high training, and rural development in terms of agricultural labour units. The results underlined in 2001 as an high value of rural development, in terms of working force in agriculture, was identified in some countries of European Union characterised by a low value both in high training investments and also by a low value of Human Development Index, according to the definition of The Economist. The results in 2010 pointed out an inverse correlation among the dependent variable development in rural areas and the independent variables per capita GDP and national expenditure in advanced training, in percentage of national GDP. The learning by doing and by using, the introduction of advanced training in agriculture, using Long Life Learning measures of European Union, are important to improve the development of European rural areas but, sometimes, these actions are not perceived as something of useful. 展开更多
关键词 Rural areas European Union human development index GDP long life learning.
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Employment and Performance of Agricultural Graduates: Who Are We Training for?
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作者 Sidi Sanyang Samba Ly +4 位作者 Julienne Kuiseu Stella Ama Ennin Lamin Jobe Lassine Diarra Pierre Bantaba 《Sociology Study》 2013年第5期341-353,共13页
The fit-for purpose of agricultural graduates in the job market remains a challenge to agricultural training and education despite the active involvement of farmer organizations, non-governmental organizations (NGOs... The fit-for purpose of agricultural graduates in the job market remains a challenge to agricultural training and education despite the active involvement of farmer organizations, non-governmental organizations (NGOs), and agribusiness in the agriculture job market. This paper traces: (1) the employment of agricultural graduates in the last 10 years in Mali, Republic of Congo, Ghana, and the Gambia; and (2) through a case study, assesses the attitudinal and mindset change in the way research for development is conducted by research staff of the National Agricultural Research Institute (NARI) of the Gambia. Not surprisingly, the public sector consistently employed more agricultural graduates in all four countries. The next highest employer of agricultural graduates was the NGOs, followed by agribusiness. Positive attitudinal and mindset change among research staff and their collaborators in the Gambia was enhanced when collaborative learning and coaching and mentoring in managerial and financial skills enhancement complemented technical skills improvements. Employers indicated strong preference for graduates in agricultural engineering and farm machinery; agricultural economics with emphasis on farm management; innovation systems and value chains; and information communication technology including report writing. Farmers' organizations showed particular interest in interpersonal skills; participatory technology development and dissemination; and appreciation of socio-cultural contexts including farmer innovations. In Mali, Ghana and the Gambia, employers reported that 4%-14% of the agricultural graduates they hired were women. 展开更多
关键词 Agricultural graduates farmers' organizations non-government organizations (NGOs) agribusiness attitudinal and mindset change
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Food security status in rural areas of Mizoram,Northeast India
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作者 Vishwambhar Prasad SATT Lalrinpuia VANGCHHIA 《Journal of Mountain Science》 SCIE CSCD 2017年第4期795-805,共11页
Rural areas practice subsistence of the Mizoram state, India agriculture where shifting cultivation dominates the farming systems. As a result, output from crops is very low and thus, the rural areas suffer from food ... Rural areas practice subsistence of the Mizoram state, India agriculture where shifting cultivation dominates the farming systems. As a result, output from crops is very low and thus, the rural areas suffer from food insecurity. This paper analyses food security status in the rural areas of Mizoram and suggests the measures to attain food security. A case study of 16 villages, lying in all the eight districts of Mizoram, was conducted in 2014 and 1527 households (76%) out of total 2010 households were surveyed through purposive random sampling method. Structured questionnaire was constructed and questions on three food security components and 13 indicators were asked. We used Z score technique to calculate data and finally got a composite score of all the components of food security. Our result shows that food availability in the study villages is very less as composite score stands for o.oo3 whereas food accessibility is comparatively higher, mainly due to availability of fair price shops (mean value is one), high agricultural working population (40.1%) and high literacy rate (70.6%). Therefore, its composite score is 0.236. Food stability scores only -0.062 and finally overall food security stands for 0.178, which is inadequate. We have suggested that‘system rice intensification', which is already in practice, should be given priority. Adequate irrigation facilities, proper public distribution system, cultivation of fruits and vegetables, value addition in farm products and access to market may achieve food security. 展开更多
关键词 Food availability Food accessibility Food stability Food security Mizoram
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Do Farmers Respond to Training?--The Case of the Millennium Challenge Account (MCA)-Ghana Programme
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作者 Robert Darko Osei Isaac Osei Akoto +1 位作者 Andrew Agyei-Holmes Hayford Mensah Ayerakwa 《Journal of Food Science and Engineering》 2013年第11期592-608,共17页
This study examined the effect of farmer business, technical training and input provision through a government intervention programme on productivity and crop incomes among Farmer Based Organizations (FBO) in Ghana.... This study examined the effect of farmer business, technical training and input provision through a government intervention programme on productivity and crop incomes among Farmer Based Organizations (FBO) in Ghana. Farm level data were collected from 2,900 farmers over 11,000 farm plots. The difference-in-difference estimator is employed to test the impact of this intervention on crop yields and incomes. Farmers were randomly put into two distinct groups: the treatment (early training) and control (late training). After the collection of baseline data, the treatment group received crop husbandry training and a starter pack which included inputs and cash both worth about US$230. The control group received the intervention after a year. The main findings of this study are that the intervention does not have any significant impact on crop yields and crop incomes. However the authors do find some evidences that as a result of the intervention, the value of chemicals used by farmers decreased by about GH^25 The study concludes by noting that although some changes do occur over the period, and it is not possible to attribute these changes to the MiDA training programme for all the indicators of interest except chemical costs. 展开更多
关键词 Agriculture productivity farmer incomes training.
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A Study on the Application of Agricultural Residue in Cultivation Substrate of Orchid
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作者 LI Li-hui HU Yao +5 位作者 LEI Xing-yu ZHANG Yue-long LI Hong-gao ZHANG Zhi-de XIE Tao WANG Ke-qing 《Agricultural Science & Technology》 CAS 2019年第3期22-25,30,共5页
Five different substrates were prepared using oyster mushroom residue,rice straw,peat soil,pine bark,volcanic rock and perlite.Orchids(variety Chunjian)were cultivated on these five substrates with substrate being mad... Five different substrates were prepared using oyster mushroom residue,rice straw,peat soil,pine bark,volcanic rock and perlite.Orchids(variety Chunjian)were cultivated on these five substrates with substrate being made from aseptic residue and straw as the control.The changes of physical and chemical properties of substrates and the growth of orchids were observed after three months.The results showed that the physical and chemical characters of the treatments and the control each had its own advantage,and there were no significant differences in the cultivation effects of all treatments.Therefore,the mushroom residue and decomposed rice straw are good substitutes for peat soil as soilless culture substrate in orchid cultivation.This research provides a scientific basis for the transformation of agricultural wastes into useful materials and can greatly stimulate the development of related industries. 展开更多
关键词 Agricultural waste ORCHID Cultivation substrate
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Discussion on Cultivating the Idea of the Western Rural Market Economy
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作者 Qijie WU 《International Journal of Technology Management》 2013年第3期56-58,共3页
Along with the deepening of the economic system reform, the quickening of our country's steps joining WTO, and the enlarging of the discrepancies among different regions, how to promptly change the sense of the weste... Along with the deepening of the economic system reform, the quickening of our country's steps joining WTO, and the enlarging of the discrepancies among different regions, how to promptly change the sense of the western rural areas to resolve the "the three problems connected with agriculture, peasants, and countryside" and utilize the market economy regulation and taking market as the direction has become the initial problem of the economic development in western countryside in order to push the smooth implement of the western development. This thesis starts with the essence, function, and other influential factors of this idea, systematically elaborates the current idea characteristics of each stratum in western countryside, discovers the reason that the sense of western rural areas falls behind the times, and definitely puts forward with new idea characteristics which is suitable for the economic development of the western rural areas, and also offer some policy suggestions on how to realize this change of the sense in western rural areas. 展开更多
关键词 Western Rural Areas Market Economy Idea Conversion Suggestion
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Development of a Cylindrical Hydroponics System for Vertical Farming
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作者 Chow Kheong Keat Chithrameenal Kannan 《Journal of Agricultural Science and Technology(B)》 2015年第2期93-100,共8页
The study aimed to develop a vertical crop cultivation system for leafy plants based on cylindrical hydroponics and light emitting diode (LED) technology. Investigations were conducted on growing lettuce (Lactuca s... The study aimed to develop a vertical crop cultivation system for leafy plants based on cylindrical hydroponics and light emitting diode (LED) technology. Investigations were conducted on growing lettuce (Lactuca sativa cv. "Rex", "Nanda" and "Canasta") indoors in a rotary system and Chinese cabbage (Brassica chinensis) in a multi-tier cylindrical hydroponics system under red and blue (RB) LED lightings. Light intensity from different light sources have an influence on the yield and growth behaviour of indoor lettuce. Photosynthetically active radiation (PAR) levels at 63 μmol/m2·s produced low fresh weights (FW) and leaf areas of lettuce "Rex" and "Nanda" were grown under rotating conditions. The effect was, however, different on the better developed "Canasta". Stem etiolation was a common occurrence under such influence. Chlorosis was not observed on all plant types grown under the LEDs. Cultivating Chinese cabbage plants (FW: 28 g/plant) in cylindrical units stacked vertically above another, increased planting density by 47% when compared to the rotary system, 展开更多
关键词 Chinese cabbage cylindrical hydroponic system LED lights LETTUCE rotary system vertical farming.
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Density of Standing of Plants at Cultivation of Cauliflower Seeds in Uzbekistan
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作者 Sh. I. Asatov 《Journal of Agricultural Science and Technology》 2011年第1期81-84,共4页
The results of researches aimed to establish the optimum growing space and density of standing of plants at cultivation of cauliflower seeds in Uzbekistan are stated in the article. Researches were spent in the suburb... The results of researches aimed to establish the optimum growing space and density of standing of plants at cultivation of cauliflower seeds in Uzbekistan are stated in the article. Researches were spent in the suburb of Tashkent with a mid-early grade "Domestic". In experiences were compared 5 densities of standing (31746, 35714, 40806, 47620 and 57142 pieces/hectare) received at planting of sprouts with row-spacing of 70 sm and distance between plants in a row 25, 30, 35, 40 and 45 sm. Experiences were pawned in quadruple frequency with the area of an allotment 10 M2. 60-65 day sprouts were planted under film tunnel shelters on February 11-12. Film shelters were kept over plants till the end of March. Seed plants were grown up without formation. Experiences were accompanied by phonological control, calculation of leaves quantity, an establishment of average weight of a head, definition of quantity of the plants, which have given seeds, the account of a crop of seeds from a bush and of a unit of area. It has been defined that reception of seeds of a cauliflower at cultivation under film tunnels is quite possible in Uzbekistan. It is established that with representation of the big growing space the plants form more leaves, earlier and larger form the heads, develop the testicles acceleration and increase their seed efficiency. It has been revealed that the more plants thickness is, the bigger share of them does not give seeds. In this connection the greatest crop of seeds has been received at growing space 70x45 sm at which 31.7 thousand Pl/ha had been planted. It is proved that in the conditions of Uzbekistan it is possible to cultivate high-grade seeds of cauliflower with productivity of 127-147 kg/ha. 展开更多
关键词 CAULIFLOWER density of standing growing space leaves HEADS flower-bearing shoots seed efficiency productivity.
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Research Progress of High Yield Cultivation Mode of Rice
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作者 Mengyang Li Yanyan CHEN +2 位作者 Yang YANG Guiyuan MENG Jing ZHOU 《Agricultural Science & Technology》 CAS 2017年第8期1416-1421,共6页
Optimized high-yielding cultivation is of great significance to ensure stable and high yield of rice in China. This paper reviewed several super high-yielding cultivation modes, analyzed the effects of different culti... Optimized high-yielding cultivation is of great significance to ensure stable and high yield of rice in China. This paper reviewed several super high-yielding cultivation modes, analyzed the effects of different cultivation modes on rice agronomic traits and physiological characteristics, and discussed the advances in rice mechanized cultivation and mode. Finally, the future development prospects of rice cultivation were put forward. 展开更多
关键词 RICE Cultivation mode MECHANIZATION Physiological characteristics
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Benin Farmers Advance Through Chinese Agrotechnology
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作者 ZHANG GAIPING 《China Today》 2015年第7期37-38,共2页
THE fluttering red,five-starred Chinese national flag guided us to the China-aided Agrotechnology Demonstration Center in Seme,20 or more km east of Cotonou,Benin's largest city.It stands within a gray-tiled,white-wa... THE fluttering red,five-starred Chinese national flag guided us to the China-aided Agrotechnology Demonstration Center in Seme,20 or more km east of Cotonou,Benin's largest city.It stands within a gray-tiled,white-walled Chinese garden-style compound."Over the past several years,groups of Chinese agricultural experts and management staff have come to Benin to cooperate with locals in crop cultivation and breeding,animal husbandry and poultry, so speeding up Benin's agricultural development and contributing to the country's poverty reduction drive," general manager of the center Huang Jianping said. 展开更多
关键词 cultivation walled agricultural breeding garden guided stands aided demonstration husbandry
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Toxicity of organophosphorus pesticide sumithion on larval stages of stinging catfish Heteropneustes fossilis
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作者 Md.SHAHJAHAN Md.Farajul KABIR +2 位作者 Kizar Ahmed SUMON Lipi Rani BHOWMIK Harunur RASHID 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2017年第1期109-114,共6页
Sumithion is widely used to control brittle in paddy fields and tiger bug in fish larval rearing ponds. The objective of this study was to elucidate the toxic effects of sumithion on larval stages of stinging catfish ... Sumithion is widely used to control brittle in paddy fields and tiger bug in fish larval rearing ponds. The objective of this study was to elucidate the toxic effects of sumithion on larval stages of stinging catfish Heteropneustes fossilis. Larvae were exposed to two concentrations(150 and 250 μg/L) of sumithion with one control in three replicates of each. Larvae samples were collected at 20- and 24-h intervals followed by observation under a digital microscope. Exposures of stinging catfish larvae to sumithion produced deformities including irregular head shape, lordosis, yolk sac edema, body arcuation, tissue ulceration, etc. The mortality rates of larvae were significantly increased in response to increase in sumithion concentrations. Furthermore, around 30% of the total adult stinging catfish reared in sumithiontreated aquaculture ponds were found to be deformed permanently. These findings highlight that exposure of stinging catfish to sumithion at the critical and sensitive stages in their life cycle may significantly reduce the number of returning adults. Therefore, the use of sumithion for crop protection needs to be considered carefully and alternatives to sumithion should to be developed for controlling aquatic insects in aqua-ponds during larval rearing. 展开更多
关键词 environment organophosphorus pesticide fish toxicity
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Improved Biodegradation of 1,2,4-Trichlorobenzene by Adapted Microorganisms in Agricultural Soil and in Soil Suspension Cultures 被引量:4
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作者 SONG Yang WANG Fang +4 位作者 F. O. KENGARA BIAN Yong-Rong YANG Xing-Lun LIU Cui-Ying JIANG Xin 《Pedosphere》 SCIE CAS CSCD 2011年第4期423-431,共9页
Inoculating soil with an adapted microbial community is a more effective bioaugmentation approach than inoculation with pure strains in bioremediation.However,information on the potential of different inocula from sit... Inoculating soil with an adapted microbial community is a more effective bioaugmentation approach than inoculation with pure strains in bioremediation.However,information on the potential of different inocula from sites with varying contamination levels and pollution histories in soil remediation is lacking.The objective of the study was to investigate the potential of adapted microorganisms in soil inocula,with different contamination levels and pollution histories,to degrade 1,2,4-trichlorobenzene (1,2,4-TCB).Three different soils from chlorobenzene-contaminated sites were inoculated into agricultural soils and soil suspension cultures spiked with 1,2,4-TCB.The results showed that 36.52% of the initially applied 1,2,4-TCB was present in the non-inoculated soil,whereas about 19.00% of 1,2,4-TCB was present in the agricultural soils inoculated with contaminated soils after 28 days of incubation.The soils inoculated with adapted microbial biomass (in the soil inocula) showed higher respiration and lower 1,2,4-TCB volatilization than the non-inoculated soils,suggesting the existence of 1,2,4-TCB adapted degraders in the contaminated soils used for inoculation.It was further confirmed in the contaminated soil suspension cultures that the concentration of inorganic chloride ions increased continuously over the entire experimental period.Higher contamination of the inocula led not only to higher degradation potential but also to higher residue formation.However,even inocula of low-level contamination were effective in enhancing the degradation of 1,2,4-TCB.Therefore,applying adapted microorganisms in the form of soil inocula,especially with lower contamination levels,could be an effective and environment-friendly strategy for soil remediation. 展开更多
关键词 BIOAUGMENTATION CHLOROBENZENES contaminated soil DECHLORINATION inoculation VOLATILIZATION
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