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甘肃省定西市农机推广站经过几年的研究、试验和不断改进,研制出了3ZF-3型马铃薯中耕施肥机,该机能一次完成松土、锄草、追肥、培土等中耕作业,作业效率高。 相似文献
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由新疆农垦科学院农机所设计,新疆潜水泵厂制造的旋转中耕追肥机,通过田间作业演示及有关科研、专家鉴定验收合格。该机可一次性完成作物中耕、灭草、追肥和开沟培土,碎土性好,灭草率高,耕后平整,不伤苗,不埋苗,土壤适应性强,适合麦田套种作业,该机每台1.9万元左右。旋转中耕追肥机制造成功@李东升 相似文献
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介绍了3ZQ-10型中耕追肥起垄机总体结构及技术参数、性能特点、工作原理和主要工作部件的设计,简述了其使用与调整。试验结果表明,该机能满足大马力拖拉机配套田间中耕管理机械作业的农艺要求,具有较好的使用价值和推广前景。 相似文献
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4CM-150型齿链式悬挂收膜机 总被引:4,自引:0,他引:4
4CM-150型齿链式悬挂收膜机主要用千泊头水前行间地膜回收作业.该机设计成回收每一条膜为一个独立单组.可由小型拖拉机配套作业.由于各单组结构完全相同,因此可由若干个单组构成~次收2条或3条膜的整机,一次回收多条地膜,用大中型拖拉机配套.作业时可将各单组按行距配置卡装在中耕追肥机大梁上,与中耕、开沟、追肥等作业形成江式作业,既可省去单独为收膜而进行一次作业,又可使收股与油水紧密衔接.该机在作业中.不需要拖拉机对其进行动力抬出,也不纪人工进行引膜等辅助.该机的行距可根据实际种植行距任意调整,有较好的适应… 相似文献
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车用发动机润滑油失效规律与更换周期研究 总被引:7,自引:0,他引:7
研究在正常使用条件下10W/30-QC级润滑油用于某型车用发动机时所表现的失效规律,确认期服从两参数Weibull分布,并给出分布的尺度参数η和形状参数m之最佳线性无偏估计(BLUE)同时,还为定量分析,计算车用发动机润滑油的使用可靠性和合理确定其更换周期提供了一套可供借鉴的方法,并给出了具体的计算实例。 相似文献
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赵国杰 《农业机械化与电气化》2011,(4):106-107
乡(镇)农技推广体系是农业发展的关键。介绍朝阳市农业技术推广体系的现状,针对目前体制及运行机制、服务手段等方面存在的问题,提出适合朝阳市乡(镇)农技推广体系改革与发展的对策,以期对全省农技推广体系改革和发展起到一些借鉴作用。 相似文献
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苑庆刚 《农业机械化与电气化》2010,(3):52-54
草莓果味酸甜爽口,营养价值高,为人们所喜爱的应市鲜果之一。由于草莓易受损伤和微生物侵染,因此其采收、贮藏过程极为重要。介绍草莓采收过程中的注意事项以及11种贮藏保鲜技术的实施步骤和操作方法,推介9种加工方式,为草莓产业化提供技术支持。 相似文献
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About 30 years have passed since the Government of Egypt embarked on implementing a series of large scale drainage projects. At present, about 3.8 million acres have been provided with drainage systems on the basis of systematic pre-drainage investigations and designs. The target is to provide drains in approximately 6.4 million acres in the Nile Valley and Delta.The implementation of the subsurface drainage system is carried out by the public sector and private contractors under direct supervision of governmental regional departments. The implementation process depends on many factors related to the drainage material, machinery, manpower, site requirements, farmers and organizations involved. Problems and constraints are sometimes challenging, however, the annual rate of implementation has gradually increased to 170,000 acre/year.This paper discusses the different aspects involved in the implementation process of drainage systems. The development in materials, machinery and construction technologies will be reviewed. Institutional and management factors are going to be also considered. 相似文献
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王芳 《农业机械化与电气化》2011,(4):36-38
以海城地区水稻主栽品种辽星一号为研究对象,开展水稻"3414"氮磷钾肥料试验,研究水稻在不同氮磷钾水平配比时的产量效应、最佳施肥量及最佳氮磷钾配比。结果表明,本地区最佳经济产量为725.5kg/667m2,氮磷钾最佳施肥量分别为N16.1kg/667m2、P2O58.5kg/667m2、K2O7.3kg/667m2,氮磷钾的最佳施肥配比为1:0.53:0.45。 相似文献
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M. G. Bos H. van den Bosch H. Diemont H. van Keulen J. Lahr G. Meijerink A. Verhagen 《Irrigation and Drainage Systems》2007,21(1):1-15
The rural sustainability index is a scientifically based tool to quantify the performance of agriculture. The sustainability
of crop production is quantified from three perspectives; people, planet and profit. Within each perspective, one condition
was selected that must be met to warrant agriculture. These are: No hazardous work should be used within the crop production
chain; agricultural crops should not be grown on land allocated to nature by national law or regulations and, when a GM-crop
is present or is introduced in a region, it should not harm development opportunities of other farmers. If these excluding
conditions are met, the sustainability of agriculture is assessed through five performance indicators on school attendance,
water use and consumption, fertilizer use, pesticide use, and farm income. For each of the five indicators, critical values
and target values have been given that limit the transition range between non-sustainable and sustainable production. The
five indicators are combined into a sustainability index. The index aims at improving the socio-economic position of farmers
while protecting the environment.
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M. G. BosEmail: |
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夏玉米生育期叶面蒸腾与棵间蒸发比例试验研究 总被引:6,自引:2,他引:4
利用大型称重式蒸渗仪测定夏玉米生育期的总腾发量,用小型蒸发器测定棵间蒸发量,用茎流计测定叶面蒸腾量。通过3种设备实测数据的对比分析,得到夏玉米生育期的总耗水量为436.3 mm,其中叶面蒸腾316.4 mm,棵间蒸发119.9 mm,棵间蒸发占总腾发量的比例达到27.5%。茎流计所测得的蒸腾量与大蒸渗仪和小蒸发器联合测得的蒸腾量相关性良好,从而验证了用茎流计法测定叶面蒸腾方法的可行性。根据茎流计实测数据分析了叶面蒸腾的日变化过程,发现夏玉米叶面蒸腾与净辐射密切相关,呈周期性变化。 相似文献
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