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Long-Term No-Tillage Direct Seeding Mode for Water-Saving and Drought-Resistance Rice Production in Rice-Rapeseed Rotation System 被引量:1
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作者 DU Xing-bin CHEN Chen +4 位作者 LUO Li-jun XIA Long-ping LIU Kang CHEN Yin-hua YU Xin-qiao 《Rice science》 SCIE 2014年第4期210-216,共7页
To study the effects of long-term no-tillage direct seeding mode on rice yield and the soil physiochemical property in a rice-rapeseed rotation system, a comparative experiment with a water-saving and drought-resistan... To study the effects of long-term no-tillage direct seeding mode on rice yield and the soil physiochemical property in a rice-rapeseed rotation system, a comparative experiment with a water-saving and drought-resistance rice (WDR) variety and a double low rapeseed variety as materials was conducted under no-tillage direct seeding (NTDS) mode and conventional tillage direct seeding (CTDS) mode for four years, using the CTDS mode as the control. Compared with the CTDS mode, the actual rice yield of WDR decreased by 8.10% at the first year, whereas the plant height, spikelet number per panicle, spikelet fertility, 1000-grain weight, grain yield, actual yield, and harvest index increased with no-tillage years, which led to the actual yield increase by 6.49% at the fourth year. Correlation analysis showed that the panicle length was significantly related to the actual yield of WDR. Compared with the CTDS mode in terms of the soil properties, the pH value of the NTDS mode decreased every year, whereas the contents of soil organic matter and total N of the NTDS mode increased. In the 0-5 cm layer of the NTDS mode, the soil bulk decreased, whereas the contents of soil organic matter, total N, and available N increased. In the 5-20 cm layer of the NTDS mode, the available N and K decreased, whereas the soil bulk, contents of soil organic matter, and total N increased. In summary, the NTDS mode increased the rice yield, and could improve the paddy soil fertility of the top layer. 展开更多
关键词 no-tillage direct seeding rice yield soil physiochemical property water-saving and drought-resistance rice rotation system
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Characteristics of Fallen Seed Distribution by Domestic and Imported Aerial Seeding Equipment
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作者 Xiaobo ZHU Wuzhou LUO +1 位作者 Cong WANG Bin LI 《Asian Agricultural Research》 2021年第7期49-53,共5页
In order to explore the seed drop characteristics by aerial seeding equipment,taking aerial seeding for Pinus tabulaeformis as an example,the Gaussian curve fitting and chi-square goodness-of-fit test were carried out... In order to explore the seed drop characteristics by aerial seeding equipment,taking aerial seeding for Pinus tabulaeformis as an example,the Gaussian curve fitting and chi-square goodness-of-fit test were carried out on the data of fallen seed distribution,and the seed distribution models of domestic FB-85 and imported PZLM-18 equipment were established.The seeding performance indexes of the two kinds of equipment were calculated and compared by using the model,the existing problems of domestic equipment and their causes are analyzed,and finally,some suggestions for equipment optimization were put forward.The results indicated that the seed drop of the two kinds of equipment showed the characteristics of dense distribution in the middle and sparse distribution on both sides,and followed the Gaussian distribution as a whole;compared with PZLM-18,FB-85 had better seeding performance,but it also had the problem of uneven seed distribution;in addition to the influence of aircraft flow field,the fishtail structure design of diffuser is another important reason for the uneven seed distribution of domestic equipment;without changing the fishtail structure design,it is suggested that the principle of cross-superposition of two seeding belts should be used to replace a single large-size diffuser with two small-size diffusers,which can reduce the number of seeds in the middle and increase the number of seeds on both sides,so as to improve the uniformity of seed distribution. 展开更多
关键词 Aerial seeding equipment Pinus tabulaeformis Gaussian distribution Chi-square test
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Effect of Irrigation System, Tillage System, and Seeding Rates on Wheat (<i>Triticum aestivum</i>L.) Growth, Grain Yield and Its Water Consumption and Efficiency
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作者 Alaa M. Akol Nadine Nassif +3 位作者 Khudhair Abbas Jaddoa Haider M. Zwain Kareem Radhi Nadhir Al-Ansari 《Engineering(科研)》 2021年第11期574-594,共21页
<span style="font-family:Verdana;">A field trial was conducted at a private farm in AL-Hashimiya district Babylon Governorate—the republic of Iraq during the 2016</span><span style="font... <span style="font-family:Verdana;">A field trial was conducted at a private farm in AL-Hashimiya district Babylon Governorate—the republic of Iraq during the 2016</span><span style="font-family:Verdana;">-</span><span style="font-family:Verdana;">2017 and 2017</span><span style="font-family:Verdana;">-</span><span style="font-family:;" "=""><span style="font-family:Verdana;">2018 growing seasons.</span><span style="color:red;"> </span><span style="font-family:Verdana;">This study was conducted using two irrigation methods, sprinkler and surface irrigation, for each of them had three Tillage methods (zero-tillage</span></span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> medium-tillage</span><span style="font-family:Verdana;">,</span><span style="font-family:Verdana;"> deep-tillage) and each tillage system had four seeding rate of wheat yield (120</span><span style="font-family:Verdana;">, </span><span style="font-family:Verdana;">180</span><span style="font-family:Verdana;">, </span><span style="font-family:Verdana;">240</span><span style="font-family:Verdana;">, </span><span style="font-family:Verdana;">300) kg<span style="white-space:nowrap;">&#8729;</span>ha</span><sup><span style="font-family:Verdana;">-1</span></sup><span style="font-family:Verdana;">.</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">Results indicated that the consumptive water use was 557.5 and</span><span style="font-family:;" "=""> </span><span style="font-family:Verdana;">535.9 mm for surface irrigation and 460.9 and 442.6 mm for sprinkler irrigation in </span><span style="font-family:Verdana;">the </span><span style="font-family:;" "=""><span style="font-family:Verdana;">2016-2017 and 2017-2018 growing seasons. Sprinkler irrigation significantly increased the flag leaf area with no significant effect on plant height. However, the minimum tillage and seeding rate (240 kg<span style="white-space:nowrap;">&#8729;</span>ha</span><sup><span style="font-family:Verdana;">-1</span></sup></span><span style="font-family:;" "=""><span style="font-family:Verdana;">) significantly increased the plant height and flag leaf </span><span style="font-family:Verdana;">area in both growing seasons. For the grain yield, the sprinkler irrigation, m</span><span style="font-family:Verdana;">inimum tillage, and seeding rate (240 </span></span><span style="font-family:;" "=""><span style="font-family:Verdana;">kg<span style="white-space:nowrap;">&#8729;</span>ha</span><sup><span style="font-family:Verdana;">-1</span></sup></span><span style="font-family:;" "=""><span style="font-family:Verdana;">) also increased the plant height and flag leaf area by 13%, 10, % 11%, 11%, 12%, and 14% in both growing seasons, respectively, through an increased number of spikes/m</span><sup><span style="font-family:Verdana;">2</span></sup><span style="font-family:Verdana;">, the number of grain spike-1, and 1000-grain weight in both growing seasons, respe</span></span><span style="font-family:Verdana;">ctively. Interestingly the grain yield was increased by 33% and 32% in both growing seasons under the effects of these three factors altogether, respectively. It can be concluded that these factors act synergistically, resulting in a significant improvement in the wheat grain-yield of, less consumptive water use, and high water use efficiency.</span> 展开更多
关键词 IRRIGATION tillage system seeding rates Wheat (Triticum Aestivum L.) Grain yield Water Consumption
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Impact of Tillage and Herbicides on Weed Density, Yield and Quality of Cotton in Wheat Based Cropping System 被引量:1
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作者 Khalid Usman Niamatullah Khan +2 位作者 Muhammad Umar Khan Aziz ur Rehman Said Ghulam 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2013年第9期1568-1579,共12页
Conservation tillage may improve yield of cotton in addition to improvement in soil quality if practiced for longer period. However, the practice may not be productive in short-term particularly when severe weeds are ... Conservation tillage may improve yield of cotton in addition to improvement in soil quality if practiced for longer period. However, the practice may not be productive in short-term particularly when severe weeds are infesting the crops such as Cynodon dactylon, Conyza canadensis, Tribulus terrestris, and Cyperus rotundus, etc. Recent studies indicate that conventional tillage (CT) is more productive than zero tillage (ZT)/reduced tillage (RT). Performance of cotton under three tillage systems, viz., ZT, RT and CT; and five herbicides, i.e., haloxyfop-R-methyl 10.8 EC (108 g a.i. ha^-1), lactofen 24 EC (168 g a.i. ha^-1), haloxyfop 10.8 EC + lactofen 24 EC, hand weeding, and weedy check were evaluated during 2010-2011 at Gomal University, D.I.Khan, Pakistan, to explore the best management option for effective weed control, enhanced yield and quality of cotton grown after wheat. The results revealed that hand weeding and Haloxyfop as post emergence alone or in combination with Lactofen reduced weed density to the minimum irrespective of the tillage systems. Excessive rainfall and cooler temperature limited cotton growth and yield in 2010. The adverse weather conditions had more adverse effect on boll weight under ZT and RT than CT. Haloxyfop + lactofen produced higher seed cotton yield in RT than ZT, however, it could not exceed CT. Broad-spectrum herbicides x CT produced the highest number of bolls/plant, boll weight and seed cotton yield. Fiber quality and net returns were also the highest in broad-spectrum herbicides x CT. In conclusion, broad-spectrum herbicides under CT were more productive in wheat based cropping system on silty clay soil of D.I.Khan. 展开更多
关键词 tillage HERBICIDE COTTON seed cotton yield weed density net return
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Effects of Different Soil Preparation and Fertilizer Application Methods on the Growth and Yield of the Rice-Crayfish Rotation Direct Seeding Rice Nongxiang 32 被引量:1
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作者 DAI Li TAO Shu-hua +4 位作者 HU Wen-bin LIU Ye LI Wen-zhong FANG Bao-hua ZHAO Zheng-hong 《Agricultural Science & Technology》 CAS 2021年第2期6-12,共7页
In order to improve the yield and fertilizer utilization of the ricecrayfish rotation and direct seeding rice Nongxiang 32,the effects of different soil preparation and fertilizer application methods on the growth,yie... In order to improve the yield and fertilizer utilization of the ricecrayfish rotation and direct seeding rice Nongxiang 32,the effects of different soil preparation and fertilizer application methods on the growth,yield and fertilizer utilization of the variety were studied.The results showed that,under the rice-crayfish rotation and direct seeding farming mode,the contributions of seed setting rate,1000-grain weight,yield,and fertilizer contribution rate to yield of Nongxiang 32 in the treatments with rotary tillage with base fertilizer,rotary tillage without base fertilizer and no-tillage with base fertilizer were relatively higher than those in the treatments with rotary tillage without fertilizer,no-tillage without fertilizer and no-tillage without base fertilizer,and there were no significant differences between the three treatments.Rotary tillage with base fertilizer and rotary tillage without base fertilizer significantly increased the total number of stems and tillers,total number of ears,and number of effective ears.Rotary tillage and application of base fertilizer also significantly increased the number of tillers,plant weight and weed suppression ability in the early stage of rice growth.Therefore,in the different soil preparation and fertilizer application methods,the application of base fertilizer with rotary tillage was the best,followed by rotary tillage without base fertilizer and no-tillage with base fertilizer. 展开更多
关键词 Rice-crayfish rotation Direct seeding Rotary tillage NO-tillage Fertilization method
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小麦机械化免耕播种技术应用与优化分析
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作者 顾士亭 《中国农机装备》 2025年第2期20-22,共3页
小麦机械化免耕播种技术的应用与优化是提高小麦生产效率、实现小麦高产和稳产的重要途径。机械化免耕播种技术涉及多个关键环节,包括小麦选种、种子处理、田间管理等。在选种过程中,需选择抗逆性强、产量高且适应性好的小麦品种,以确... 小麦机械化免耕播种技术的应用与优化是提高小麦生产效率、实现小麦高产和稳产的重要途径。机械化免耕播种技术涉及多个关键环节,包括小麦选种、种子处理、田间管理等。在选种过程中,需选择抗逆性强、产量高且适应性好的小麦品种,以确保在不良环境条件下的健康生长。种子处理方面,通过合理使用药剂和水分管理,提高种子的发芽率和抗病能力。田间管理则强调灌溉和施肥的协调,确保小麦在不同生长阶段获得充足的水分和养分。通过优化播种时间、播种量、行距和深度,提高小麦的生长质量和产量。采用现代化的机械设备和精准的管理措施,可有效降低土壤损伤和资源浪费,为实现高效、环保的农业生产提供了技术支持。 展开更多
关键词 小麦 机械化 免耕播种 技术应用 优化分析
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Influences of wide-narrow seeding on soil properties and winter wheat yields under conservation tillage in North China Plain 被引量:6
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作者 Hongnan Hu Caiyun Lu +4 位作者 Qingjie Wang Hongwen Li Jin He Dijuan Xu Xianliang Wang 《International Journal of Agricultural and Biological Engineering》 SCIE EI CAS 2018年第4期74-80,共7页
In order to promote the winter wheat yield and guarantee seeding quality in double-cropping system,no-tillage or reduced tillage planting modes with different row spacing have been implemented to result in different l... In order to promote the winter wheat yield and guarantee seeding quality in double-cropping system,no-tillage or reduced tillage planting modes with different row spacing have been implemented to result in different levels of yield.A three-year(2012-2015)field experiment was conducted on the experimental farm at Zhuozhou of Hebei Province in North China Plain to compare winter wheat yield from the two planting modes:wide-narrow row space planting mode(WN)and uniform row space planting mode(UR)Both planting modes were performed under reduced tillage conditions with straw mulching.The results showed that in North China Plain WN had positive impacts on crop yield,yield components,leaf area index(LAI)and intercepted photosynthetically active radiation(IPAR)index.Comparing with the UR,IPAR and LAI index for WN were enhanced by 4.8%and 5.2%,respectively.The average yield for WN was 7.2%,significantly greater than that of UR under the same quantity and density.In addition,for WN mode,machinery could pass through with less blocking under large amount of straw mulching,which largely improved tillage efficiency and potentially popularized the conservation tillage technology in North China plain.It is therefore recommended that wide-narrow row space planting mode(WN)combined with reduced tillage and straw mulching be more suitable for conservation tillage in double-cropping pattern areas in North China Plain. 展开更多
关键词 winter wheat yield wide-narrow seeding conservation tillage row spacing LAI IPAR
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Depletion of an Artificial Seed Bank of Palmer Amaranth (<i>Amaranthus palmeri</i>) over Four Years of Burial
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作者 Prashant Jha Jason K. Norsworthy Josefina Garcia 《American Journal of Plant Sciences》 2014年第11期1599-1606,共8页
An artificial seed bank study was conducted at Pendleton, SC, USA, to investigate the persistence of Palmer amaranth seeds buried uniformly across a 10-cm depth in soil inside polyvinyl chloride (PVC) cylindrical pipe... An artificial seed bank study was conducted at Pendleton, SC, USA, to investigate the persistence of Palmer amaranth seeds buried uniformly across a 10-cm depth in soil inside polyvinyl chloride (PVC) cylindrical pipes over 4 years. The experiment was conducted using a split-plot design, with year as the main plot factor and with or without soil disturbance (shallow tillage to a depth of 10 cm) as the subplot factor. Annual soil disturbance through tillage in the spring stimulated emergence during the first and second year after burial. A total of 0.5% to 0.8% of the seed bank emerged during the 4-yr burial period, and 99% or more of the 4-yr total emergence occurred during the first two years of burial. Seeds retrieved from 0 to 5 cm and 5 to 10 cm depths did not differ in viability. Soil disturbance influenced the decline of the artificial seed bank at least in the first year, with fewer viable seeds remaining in annually-disturbed plots. Regardless of soil disturbance, a small fraction of seeds (0.01% to 0.03% of original seed bank) remained viable in the soil after four years of burial. In conclusion, Palmer amaranth seeds buried across a 10 cm soil depth in the artificial seed bank had low persistence, which implies that burial may aid management of the weed seed bank. 展开更多
关键词 BURIAL DORMANCY Persistence Soil seed Bank seedling Emergence tillage
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玉米免耕播种机振动特性及对排种器排种性能的影响 被引量:3
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作者 张红梅 张晨明 +3 位作者 朱晨辉 祝英豪 李志杰 李鹏昌 《中国农机化学报》 北大核心 2024年第5期1-8,F0003,共9页
为研究玉米免耕播种机振动特性以及振动对排种器漏播指数和重播指数的影响,搭建一套由振动加速度传感器、电荷放大器、USB采集卡组成的播种作业振动测试系统,在玉米免耕播种机免耕地表作业时进行振动测试采集播种作业的振动信号。因田... 为研究玉米免耕播种机振动特性以及振动对排种器漏播指数和重播指数的影响,搭建一套由振动加速度传感器、电荷放大器、USB采集卡组成的播种作业振动测试系统,在玉米免耕播种机免耕地表作业时进行振动测试采集播种作业的振动信号。因田间工作环境复杂,使用经典滤波法中的IIR滤波器滤除所采集振动信号中其他高频干扰信号,对田间采集振动信号进行时域分析,均方值作为时域分析指标值。结果表明:振动加速度均方根随着作业速度和旋耕机转速的增加呈线性增加,旋耕机转速和作业速度是引起玉米免耕播种机振动的主要因素,影响顺序为:旋耕机转速>作业速度。使用二次积分法对田间采集信号进行分析,得出播种机作业时最大振动位移为16.004mm,对振动信号进行频域分析,使用直接法求出功率谱密度。结果表明:玉米免耕播种机振动频率主要在0~100Hz之间,频率分布与旋耕机转速影响较大。根据田间振动信号所得工作参数搭建振动试验台,以播种机振动频率、振动幅值、作业速度为试验因素,合格指数、漏播指数为评价指标进行3因素3水平响应面试验。结果表明:作业速度、振动幅值和振动频率对合格指数和漏播指数影响较为显著。各因素对合格指数影响顺序为:振动幅值、作业速度、振动频率;各因素对漏播指数影响顺序为:振动幅值、振动频率、作业速度。研究结果可为降低玉米免耕播种机振动和优化指夹式排种器提供理论参考。 展开更多
关键词 玉米免耕播种机 指夹式排种器 振动 时频分析 排种性能
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气吸式杂交稻单粒排种器研制 被引量:1
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作者 臧英 黄子顺 +6 位作者 秦伟 何思禹 钱诚 姜有聪 陶婉琰 张美林 王在满 《农业工程学报》 EI CAS CSCD 北大核心 2024年第6期181-191,共11页
针对气力式水稻精量排种器充种不稳定、单粒播种精度不高和播种量大的问题,该研究设计了一种具有矩形吸种孔和辅助充种装置的气吸式杂交稻单粒排种器。根据“吉田优”型杂交稻的长短轴重力分布情况,确定排种盘吸种孔形状;基于CFD-DEM(Co... 针对气力式水稻精量排种器充种不稳定、单粒播种精度不高和播种量大的问题,该研究设计了一种具有矩形吸种孔和辅助充种装置的气吸式杂交稻单粒排种器。根据“吉田优”型杂交稻的长短轴重力分布情况,确定排种盘吸种孔形状;基于CFD-DEM(Computational fluid dynamics,Discrete element method)流固耦合理论,以吸附力为指标,进行5类具有相同面积的吸种孔单因素仿真试验,确定吸附力最大的吸种孔规格为0.8 mm×2.25 mm;以该型吸种孔为基础,选取辅助充种角、工作转速和工作负压为试验因素,以单粒率S、多粒率M和漏播率L为试验指标,开展Box-Bhnken台架试验,对试验结果进行响应曲面分析和多目标优化,得到排种盘辅助充种角为80.90°、工作转速为42.65 r/min、工作负压为621 Pa时,排种器的单粒率为86.91%,漏播率为3.63%。验证试验结果的排种器单粒率为86.36%、漏播率为3.41%,与优化结果吻合。研究结果可为后续气吸式杂交稻单粒排种器的优化设计和直播机整机作业精度的提高提供指导。 展开更多
关键词 农业机械 种子 气力式设备 杂交稻 气吸式排种器 CFD-DEM 辅助充种
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冬水田轻简化栽培杂交稻蓄留再生稻产量形成特点
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作者 蒋鹏 张林 +6 位作者 周兴兵 郭晓艺 朱永川 刘茂 郭长春 熊洪 徐富贤 《中国水稻科学》 CAS CSCD 北大核心 2024年第5期544-554,共11页
【目的】轻简化栽培水稻因具有良好的社会、经济和环境效益而受到了广泛的关注。探明再生稻系统下轻简化栽培对杂交稻头季、再生季产量形成特点的影响,可为再生稻轻简化栽培提供理论依据。【方法】于2021-2022年在四川省典型再生稻区泸... 【目的】轻简化栽培水稻因具有良好的社会、经济和环境效益而受到了广泛的关注。探明再生稻系统下轻简化栽培对杂交稻头季、再生季产量形成特点的影响,可为再生稻轻简化栽培提供理论依据。【方法】于2021-2022年在四川省典型再生稻区泸州进行大田试验,以7个杂交稻(益两优94、德优6699、泰优1060、蓉7优680、乐3优2275、德优727、锦丰优727)和1个常规稻(金农丝苗)为材料,研究两种栽培方式(免耕直播、免耕抛秧)对杂交稻头季、再生季产量形成特点的影响。【结果】栽培方式和品种基因型对杂交稻头季、再生季及两季总产量影响显著。与免耕抛秧相比,免耕直播头季、再生季及两季总产量分别增加了3.52%~7.37%、18.94%~47.37%、7.04%~14.93%,免耕直播杂交稻蓄留再生稻的增产优势主要表现在有效穗数、结实率、干物质积累量和收获指数上。不同基因型杂交稻头季产量以泰优1060、锦丰优727较高,再生季产量及两季总产量则以泰优1060最高。从2年平均值来看,高产杂交稻(德优6699、泰优1060、德优727、锦丰优727)头季、再生季以及两季总产量分别为8.80、2.53、11.33t/hm^(2),较中低产杂交稻(益两优94、蓉7蓉680、乐3优2275)分别增加了13.54%、6.03%、11.76%;比高产常规稻(金农丝苗)分别增加了9.97%、21.87%、12.41%。与高产常规稻相比,中低产杂交稻头季产量平均降低了3.15%,但其再生季及两季总产量则分别平均增加了14.94%、0.58%。从产量构成来看,高产杂交稻头季、再生季的有效穗数、千粒重均高于高产常规稻。从干物质生产来看,与高产常规稻相比,高产杂交稻头季和再生季成熟期的干物质量、收获指数分别平均增加3.82%和11.16%、5.45%和5.70%。中低产杂交稻头季成熟期干物质积累量低于高产常规稻是其减产的主要原因。【结论】再生稻系统下免耕直播相对于免耕抛栽有明显的增产优势,是其源库协调的一种良好响应。综合考虑再生季产量与两季总产量,四川省冬水田区再生稻轻简化高产栽培适宜选用分蘖能力强、千粒重大的杂交稻品种。 展开更多
关键词 再生稻 杂交稻 常规稻 免耕直播 产量
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耕作方式对冬小麦种子发芽特性及贮藏物质转运的影响
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作者 黄玲 杨文平 +3 位作者 姚素梅 梅沛沛 胡喜巧 张传功 《河南科技学院学报(自然科学版)》 2024年第2期1-8,共8页
为了研究不同耕作方式对成熟种子的萌发和种子贮藏物质转运特性的影响,文章以百农矮抗58(AK58)和百农4199(BN4199)为试验材料,利用标准发芽试验法对旋耕(CK)、深松(S0)和深耕(S1)后收获的小麦籽粒进行种子发芽、幼苗生长和贮藏物质转运... 为了研究不同耕作方式对成熟种子的萌发和种子贮藏物质转运特性的影响,文章以百农矮抗58(AK58)和百农4199(BN4199)为试验材料,利用标准发芽试验法对旋耕(CK)、深松(S0)和深耕(S1)后收获的小麦籽粒进行种子发芽、幼苗生长和贮藏物质转运研究.研究结果表明,与CK相比,S0和S1促进了AK58种子活力指数、根数和根系活力的增加;对BN4199的根芽比、根冠比和根系活力有促进作用.AK58的含蛋白质量在旋耕条件下最大,含淀粉量在深松下最高;BN4199的千粒质量为深松高于旋耕,但含蛋白质和淀粉量差异不明显.耕作方式对种子千粒质量、蛋白质和淀粉含量影响较为显著.旋耕有利于种子贮藏物质转化效率的增加,深松有利于提高AK58种子的贮藏物质转运量和BN4199的贮藏物质转运率和呼吸消耗.品种基因型对种子的发芽率和发芽指数有决定作用,种子贮藏物质指标和呼吸消耗与根数和根系活力更为相关. 展开更多
关键词 耕作方式 深松 小麦 幼苗生长 贮藏物质转运
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长江中游地区油菜生产全程机械化技术进展与建议 被引量:2
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作者 郑娟 黄凰 +4 位作者 廖宜涛 王磊 袁佳诚 林建新 廖庆喜 《中国油料作物学报》 CAS CSCD 北大核心 2024年第2期245-259,共15页
油菜是我国重要的油料作物,长江中游地区湖北、湖南、江西三省光温资源丰富、越冬春化条件适宜,是我国油菜的主要种植区,播种面积约占全国总面积的42%,且保有冬闲田面积超3467千公顷,极具发展潜力。长江中游地区三省油菜耕种收综合机械... 油菜是我国重要的油料作物,长江中游地区湖北、湖南、江西三省光温资源丰富、越冬春化条件适宜,是我国油菜的主要种植区,播种面积约占全国总面积的42%,且保有冬闲田面积超3467千公顷,极具发展潜力。长江中游地区三省油菜耕种收综合机械化率均高于全国平均水平,全程机械化发展在全国冬油菜产区具有引领示范作用。为此,本文分析了长江中游地区油菜产业的基本情况和现存问题,对耕整地、播种、收获关键环节机械化和智能化技术进行梳理,形成可推广的油菜生产全程机械化技术路线。比较分析该地区冬闲田油菜生产“耕、种、收”环节的技术需求特点、推广应用难点,明确该地区冬闲田油菜生产技术模式呈半机械化、机械化到智能化的发展趋势。各环节的技术发展路径依次为“防堵防黏防缠绕、高速高效低耗”的机械化耕整地技术,一次性完成多道作业工序的耕播集成技术,高效低耗低损的油菜机械化收获技术,联合收获和分段收获协同发展,油菜多功能开发利用的饲用、菜用、肥用机械化技术和油菜生产智能化技术应加快研发应用。为积极响应国家油料作物扩种的要求和实现2025年油菜机械化水平提升的目标,提出了长江中游地区冬闲田油菜全程机械化技术推广应用的若干政策建议。 展开更多
关键词 油菜 全程机械化 耕整地 播种 收获 进展
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电驱排种施肥免耕播种机保护性耕作效果试验 被引量:3
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作者 沈卓群 孙继东 +1 位作者 董向辉 安鹤峰 《农机化研究》 北大核心 2024年第3期161-166,共6页
针对保护性耕作技术要求,应用自主设计的气吸式电驱动排种施肥免耕播种机进行了保护性耕作效果试验研究。对控制系统进行调试,计算电驱动排种控制系统播种间距调节误差,检测免耕播种机作业效果,监测试验地块出苗率与产量。研究结果表明... 针对保护性耕作技术要求,应用自主设计的气吸式电驱动排种施肥免耕播种机进行了保护性耕作效果试验研究。对控制系统进行调试,计算电驱动排种控制系统播种间距调节误差,检测免耕播种机作业效果,监测试验地块出苗率与产量。研究结果表明:在高留茬秸秆全量覆盖还田免耕播种模式下使用自主设计的免耕播种机进行作业,播种间距、播种深度和种肥间距合格率均能达到农艺要求,试验地块产量较相邻传统耕作模式地块产量高4.3%。研究结果可为免耕播种机设计和保护性耕作技术推广提供参考。 展开更多
关键词 免耕播种机 电驱动排种 保护性耕作
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切抛组合式小麦宽幅沟播破茬清秸防堵装置设计与试验 被引量:2
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作者 张仕林 黄玉祥 +3 位作者 赵宏波 付作立 刘正道 史江涛 《农业机械学报》 EI CAS CSCD 北大核心 2024年第5期40-52,共13页
针对西北地区玉米秸茬覆盖地小麦免少耕宽幅沟播时,由于玉米根茬阻碍秸秆流动导致的秸茬聚集壅堵、土壤扰动大、种带清洁率低、播种质量差等问题,提出先被动切割、后主动抛撒的种带清理方法。设计了一种切抛组合式破茬清秸防堵装置,通... 针对西北地区玉米秸茬覆盖地小麦免少耕宽幅沟播时,由于玉米根茬阻碍秸秆流动导致的秸茬聚集壅堵、土壤扰动大、种带清洁率低、播种质量差等问题,提出先被动切割、后主动抛撒的种带清理方法。设计了一种切抛组合式破茬清秸防堵装置,通过纵向布置的倾斜缺口圆盘与旋抛装置配合作业对种带残茬与秸秆进行清理。适配防堵装置设计了分流式开沟器,实现行距稳定的一沟两行播种。分析确定了缺口圆盘倾角与偏角参数;依据滑切理论设计计算了平直旋刀与侧倾旋刀刃线结构参数;建立MBD-DEM联合仿真平台并采用正交旋转组合试验方法,以种带清洁率、秸茬粘结键破碎率与土壤扰动宽度为指标进行旋抛装置关键参数优化仿真试验。基于仿真结果建立各指标回归模型并通过响应面分析与多目标优化得出,当侧倾旋刀倾角为20°、回转速度为310 r/min时,防堵装置种带清洁率达到96.9%,秸茬粘结键破碎率为26.9%,土壤扰动宽度为139 mm。在玉米秸茬覆盖地进行小麦播种试验,结果表明切抛组合式小麦宽幅沟播破茬清秸防堵装置通过性良好,种床清洁率为90.1%,破茬率为96.2%,土壤扰动宽度为127 mm,土壤扰动量为6.9%,整机作业质量稳定且播种后小麦出苗均匀,满足宽幅沟播小麦免耕播种农艺要求。 展开更多
关键词 免耕播种 小麦宽幅沟播 防堵装置 离散元法
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林木容器育苗自动化播种装备设计与应用
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作者 陈志强 《福建林业科技》 2024年第3期56-61,共6页
针对传统林木容器育苗播种机存在各工艺环节都需要一台独立的生产设备、各生产环节间需要人工衔接、生产成本高、生产效率低等问题,在分析林木育苗容器播种装备整机功能和结构的基础上,设计和开发一套林木容器育苗播种装备。该装备自动... 针对传统林木容器育苗播种机存在各工艺环节都需要一台独立的生产设备、各生产环节间需要人工衔接、生产成本高、生产效率低等问题,在分析林木育苗容器播种装备整机功能和结构的基础上,设计和开发一套林木容器育苗播种装备。该装备自动化控制系统采用PLC为控制器,通过人机界面操作系统设计人机界面触摸屏实现集中显示和控制。整台装备集成苗盘进给、打穴、播种、覆土、压实和喷淋等作业工序,实现全工序自动化生产。播种装置采用气吸式精量播种,减少用种量(特别是珍贵树种的种子),达到节约成本、增产增效的效果。经测试,装备播种合格率达96.5%,性能可靠,操作方便,智能化程度高,满足苗木工厂化、集约化生产作业要求。 展开更多
关键词 容器育苗 播种装备 控制系统 HMI
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我国蔬菜精量直播装备技术现状与发展趋势 被引量:1
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作者 言育谦 刘云强 +1 位作者 吴海华 刘立晶 《中国农机化学报》 北大核心 2024年第1期54-60,共7页
蔬菜生长周期短,经济效益高,蔬菜产业已成为我国农业发展的重要支撑,但因其种子粒径较小、形状不规则、机械播种难度大等特点,导致目前蔬菜播种机械化程度不高,生产效率较低,严重制约蔬菜产业的进一步发展。以部分典型蔬菜播种机为例,... 蔬菜生长周期短,经济效益高,蔬菜产业已成为我国农业发展的重要支撑,但因其种子粒径较小、形状不规则、机械播种难度大等特点,导致目前蔬菜播种机械化程度不高,生产效率较低,严重制约蔬菜产业的进一步发展。以部分典型蔬菜播种机为例,阐述国内外蔬菜播种机的研究现状及先进蔬菜播种技术,指出目前我国蔬菜直播机存在排种器通用性较差、播种效率和精度较低、电气智能化程度不高等问题,蔬菜播种机研发仍处于初级阶段。认为我国未来蔬菜直播机的发展方向将以大型气力式和小型清洁能源的机械式为主,并建议制定农艺标准及规范,提高播种机的通用性、加快新技术应用,为精量蔬菜播种机的研制提供参考。 展开更多
关键词 蔬菜播种机 精量播种 蔬菜直播机
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种子破损率快速检测方法研究
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作者 杨浩勇 王超柱 +3 位作者 刘浩义 关心桐 刘璎瑛 丁永前 《中国农机化学报》 北大核心 2024年第9期104-110,共7页
旋耕播种机推广鉴定时,需要人工检测种子的破损率。为提高检测效率,以小麦种子为例,对种子破损率快速检测方法进行研究。设计种子破损率自动检测平台,可一次性采集50 g小麦种子图像,基于图像处理技术和机器学习方法,提取小麦种子图像13... 旋耕播种机推广鉴定时,需要人工检测种子的破损率。为提高检测效率,以小麦种子为例,对种子破损率快速检测方法进行研究。设计种子破损率自动检测平台,可一次性采集50 g小麦种子图像,基于图像处理技术和机器学习方法,提取小麦种子图像13个形状特征和8个纹理特征,建立基于特征的种子破损识别模型;识别的破损种子图像与种子质量的关系,建立基于图像的破损种子质量预测模型,按照鉴定大纲要求实现小麦种子破损率的快速检测。对江苏省“丹阳001”“A888”“泰州014”“无锡004”4个品种的小麦种子破损率进行试验测试,每个品种3次取样测定。结果表明:4个品种小麦种子破损率自动检测的平均相对误差分别为0.08%、0.07%、0.06%、0.08%,检测的相对均方根误差为0.08%,检测平均时长为5.216 s。该研究实现小麦种子破损率自动、快速检测,节省农机鉴定时间,推动农机鉴定过程的标准化和智能化。 展开更多
关键词 小麦种子 旋耕播种机 图像处理 破损率 机器学习
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肥管前置式小麦宽苗带旋耕施肥播种机设计与试验
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作者 赵鹏飞 巨晓腾 +4 位作者 杨鹏琨 郑智旗 黄玉祥 高筱钧 史江涛 《农业工程学报》 EI CAS CSCD 北大核心 2024年第20期12-21,共10页
针对传统小麦宽苗带旋耕施肥播种机存在的播深一致性差、易壅堵等问题,该研究采用肥管与滑刀的组合设计,将滑刀式开沟排肥管前置于宽苗带旋耕刀组工作范围间隙中,实现了滑刀式开沟排肥管和旋耕刀组的耦合作业。通过理论分析和计算确定... 针对传统小麦宽苗带旋耕施肥播种机存在的播深一致性差、易壅堵等问题,该研究采用肥管与滑刀的组合设计,将滑刀式开沟排肥管前置于宽苗带旋耕刀组工作范围间隙中,实现了滑刀式开沟排肥管和旋耕刀组的耦合作业。通过理论分析和计算确定了滑刀式开沟排肥管刃线的基本参数、旋耕刀组的排列方式以及耦合作业原理,并构建相应的离散元仿真模型。通过仿真试验对滑刀式开沟排肥管和肥管前置式宽苗带旋耕刀组作业效果进行了试验验证。试验表明,终止滑切角为40°时滑刀式开沟排肥管所受牵引阻力最小,此外肥管前置式宽苗带旋耕刀组设计可以有效避免肥沟对播深一致性的影响,提升播深一致性。田间试验表明,机具前进速度1.11 m/s时,肥管前置式小麦宽苗带旋耕施肥播种机能够实现宽苗带播种作业,且播深合格率达94.36%,变异系数为3.79%,播深一致性表现好。此外,肥管前置与旋耕刀的配合可以使肥料在种床形成“倒三角”空间立体分布,有益于作物早期的养分吸收,也进一步避免了因肥管与种子分布器间距小导致的壅堵现象,提高了机具的通过性,满足宽苗带小麦种植需求。研究结果可为小麦宽苗带播种装置的研发与优化提供支撑。 展开更多
关键词 农业机械 优化 免耕播种 宽幅沟播 小麦
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丘陵山地翻耕机具姿态调整系统设计与仿真
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作者 施正发 袁奎 +4 位作者 余佳斌 胡勇 贺乘龙 张富贵 艾永峰 《湖北农业科学》 2024年第6期207-212,共6页
针对现有丘陵山地翻耕作业机具姿态调整系统在复杂作业工况下调整和控制精度不高,导致机具作业稳定性和作业安全性较差的问题,基于机具横向姿态调整系统,利用模糊PID控制算法设计出一套适用于丘陵山地翻耕作业的机具姿态调整系统。以常... 针对现有丘陵山地翻耕作业机具姿态调整系统在复杂作业工况下调整和控制精度不高,导致机具作业稳定性和作业安全性较差的问题,基于机具横向姿态调整系统,利用模糊PID控制算法设计出一套适用于丘陵山地翻耕作业的机具姿态调整系统。以常规PID控制算法为对照,在姿态调整系统动力学建模的基础上,通过MATLAB对其进行仿真分析,结果表明,常规PID控制算法的机具横向姿态调整时间为4.5 s,横向姿态角的超调量为0.89°;模糊PID控制算法的机具横向姿态调整时间为1.9 s,横向姿态角基本无超调。仿真试验结果验证了该机具姿态调整系统的可行性、正确性和科学性,调整系统精度和稳定性能满足丘陵山地横坡作业复杂的工况要求。 展开更多
关键词 丘陵山地 翻耕机具 姿态调整系统 模糊PID控制算法 仿真分析
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