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stubble crops
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  “stubble crops”译为未确定词的双语例句
     This trial, started with maize in 1998,and terminated with wheat in 2001,studied nine stubble crops in three years.
     试验从 1998年玉米一季开始至 2 0 0 1年小麦收后结束。 历时 3年 9茬作物。
短句来源
     (2) More leguminous plants will be added as stubble crops with the aim to improve the fertility soil and increase the economical income.
     (2)通过多熟立体栽培,增加黄豆、花生、花芸豆等豆类作物茬口,实现既培养地力又增加经济收入双赢目标。
短句来源
     The methods of cultivating management of forward and below stubble crops were put forward.
     并提出上下茬搭配的作物栽培管理的各项措施。
短句来源
  相似匹配句对
     Polyembryony in Crops
     作物多胚现象研究综述
短句来源
     Expert on Crops
     让土壤里长出希望的农作物专家——记国家科技进步二等奖获得者赵振东
短句来源
     The methods of cultivating management of forward and below stubble crops were put forward.
     并提出上下茬搭配的作物栽培管理的各项措施。
短句来源
     This trial, started with maize in 1998,and terminated with wheat in 2001,studied nine stubble crops in three years.
     试验从 1998年玉米一季开始至 2 0 0 1年小麦收后结束。 历时 3年 9茬作物。
短句来源
     Stubble Height of Puna Chicory
     普那菊苣留茬高度试验初报
短句来源
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  stubble crops
Slag was applied at five rates, and yields were evaluated from plant, first-ratoon, and second-ratoon (stubble) crops at two locations.
      
The ratoon or stubble crops develop from buds on the basal portion of plants left in the soil after harvest.
      


This paper was based on 1987-1990 experimetal results. It has been shown that measure saving waier of mulch straw has function as to reduce effectiully consumption coefficient, improve effect of irrigation and has aviailable saving water this year and more better for next stubble crops.

本文依据1987~1990年度的试验结果,论证了采取秸秆覆盖农田可有效的降低耗水系数,提高灌溉效益,不仅对当季作物有显著的节水效应,也有利于下茬作物的节水。该措施主要是从蒸发中夺取水量,对“再生资源”——地下水回归量无影响,相对地增加了“土壤水库”的贮水量。其节水机理,一是覆盖的农田可产生调节地温、蓄水保墒、保护表土、抑制杂草、培肥地力、改良土壤等多方面的生态效应,提高了农田的产出效率;二是把减少的棵间蒸发无效水,通过“土壤水库”的调节,转化为叶面蒸腾有效水,提高了用水效率。因此降低了单位产量的耗水量,提高了田间水的有效利用率。

This paper reports a three years experiment results of twelve kinds of berbicides controlling soybean field weeds. Prescription which soybean field weeds in whole growth period could be prevented and eliminated by only a single teatment were proposed:1) sethoxydin + fonnsafen + surface active agent; 2) sethoxydin + pursuit, 3) bifenox + acetochlor. 65 days after using the herbicide, the weeding effects of above three prescriptions in small plots were 95. 4% , 93. 6% , and 93. 4%, respectively. Meanwhile, the...

This paper reports a three years experiment results of twelve kinds of berbicides controlling soybean field weeds. Prescription which soybean field weeds in whole growth period could be prevented and eliminated by only a single teatment were proposed:1) sethoxydin + fonnsafen + surface active agent; 2) sethoxydin + pursuit, 3) bifenox + acetochlor. 65 days after using the herbicide, the weeding effects of above three prescriptions in small plots were 95. 4% , 93. 6% , and 93. 4%, respectively. Meanwhile, the weeding effects in large field experiments were 95. 6% , 95. 5% , and 93. 1 % , respectively. The twice hazards and residual amounts of form-safen and bifenox have been measured so that the safety using doseage of two herbicides to the post -stubble crop were determined. The cultivating model which was made up of the land leveling (plough and harrowing)-sowing (fertilizing)-medicining--harvesting was established. The experimental results showed that limited cultivating method with single herbicide treatment and no manpower and no second cultivation treatment was available to preventing and eliminating the weeds harm on th soybean field for whole growing season.

本文报道了三年来对12种大豆田除草剂的筛选结果,并从中优化出一次用药即可防除大豆田全生育期杂草的配方:1、稀禾定+氟磺胺草醚+表面活性剂;2、稀禾定+普杀特;3、甲羧除草醚+乙草胺。上述三个配方小区试验除草效果(施药后65d)分别为95.4%,93.6%和91.4%,较大面积田间示范除草效果(施药后65d)分别为95.6%,95.5%和93.1%。对氟磺胺草醚及甲羧除草醚的二次药害和残留量进行测定,确定了两种除草剂对后茬作物的安全用量。建立了整地(翻、耙)——播种(结合施肥)——用药——中耕培土(一次)——收获的栽培模式。试验结果证明,利用除草剂一次性防除大豆田全生育期杂草危害,并免去人工除草和两次中耕的少耕栽培方法是可行的。

Factors affecting on rill erosion were analyzed by the methods of typical relative analysisand double- seive step- by- step regression analysis under the condition of the high content of roil wa-ter. The important factors seived from all are rainfall,slope ,bulk density and land surface treatment(tillage methods).The unit Water flow power(Ω)and the average rate of transporting sediment(T)are respectively considered as better indexes reflecting rill erosion and erosion intensity,and also thepoqitive relation...

Factors affecting on rill erosion were analyzed by the methods of typical relative analysisand double- seive step- by- step regression analysis under the condition of the high content of roil wa-ter. The important factors seived from all are rainfall,slope ,bulk density and land surface treatment(tillage methods).The unit Water flow power(Ω)and the average rate of transporting sediment(T)are respectively considered as better indexes reflecting rill erosion and erosion intensity,and also thepoqitive relation between two indexes was found.Meanwhile,this relation exists between theamounts of rill erosion and roughness coefficient(n).It shows that soil anti- erodibility decreasesmore rapidly than the erodibility of rill flow as coefficient(n)increases. Therefore,we suggest thatnon-tillage or ew-tillage system,stubble crop and stubble mulch tillage should be used for promotingsoil anti-erodibility during the summer fallow on the slope farmland.

本文应用典型相关分析和双重筛选逐步回归法,分析了在前期土壤含水量较高条件下,影响细沟侵蚀的多项因素,筛选出了影响细沟侵蚀的主要因素,即降雨、坡度、土壤容重和地面处理(耕作措施);得出了水流动力是影响细沟侵蚀较好的综合指标和细沟流平均输沙率能更好地反映细沟侵蚀强度的结论,表明二者呈良好的正相关关系;同时也发现随着细沟表面糙率的增加,细沟的侵蚀量也增加,这与通常认为糙率增加,有助于减缓流速,减少侵蚀量的结论正好相反,说明随着糙率的增加,土壤抗蚀力的降低比水流侵蚀力的降低更快,因此建议坡耕地在汛期休闲时,应尽量采用免耕、少耕,留茬等增强土壤抗蚀力的措施。

 
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