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weeds
相关语句
  杂草
    Effect of Weeds on Wheat Growth and Nutrient Balance under Rice-wheat Rotation System.
    稻麦轮作多年农田杂草对小麦生长及养分平衡的影响
短句来源
    The treatment with 30 d-8 cm resulted in highest seed yield of 412.9 kg/hm2(P<0.01),least weeds harvest,herbage production of 4505.3 kg/hm2,highest herbage quality,and white clover proportion of 46.97%.
    其中以30 d-8 cm种子产量最高(412.9kg/hm2),极显著高于其余处理(P<0.01),且杂草量少、干草产量4505.3 kg/hm2,品质高,其中白三叶所占比例为46.97%;
短句来源
    Control of Weeds in Tobacco Fields by Herbicides
    不同除草剂对烟草大田杂草防除研究初报
短句来源
    Observation of Vegetations to Controll Weeds and Diseases in Vanilla Plantation
    植被对香荚兰园防治杂草和降低病害的初步观察
短句来源
    Effect of transgenic Bt cotton GK22 on the population dynamics of the insect pests and weeds in Jiangsu cotton region
    江苏棉区种植转基因抗虫棉GK22对棉田害虫、杂草种群的影响
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  “weeds”译为未确定词的双语例句
    Deeply executes NPK organically is fat >deeply executes the NPK>convention executes NPK>weeds out the earth shallowly executes NPK>scatter NPK>ck.
    深施NPK有机肥>深施NPK>常规施NPK>薅土浅施NPK>撒施NPK>ck。
短句来源
    Experimental study on effect of paper-mulching rice planting technology on saving water and controlling weeds
    水稻纸膜覆盖种植技术节水控草效果的试验研究
短句来源
    Molecular biological study on the action mechanism of rice allelochemicals against weeds
    水稻化感物质抑草作用机理的分子生物学研究
短句来源
    and Ixeris sonchifolia Hance. According to the weeds control effect of those herbicides, their security to alfalfa and their effect of increasing the production of alfalfa hay, the most ideal herbicides are Machete (level 1) 、. Gallant super (level 1) and Nabu oil EC (level 3), that is to say 1000ml/hm2 Machete, 300 ml/hm2 Gallant super and 1500 ml/hm2 Nabu oil EC is the better herbicides in this experiment.
    综合除草剂的杀草效果和对苜蓿的安全性以及苜蓿的增产效果,本试验中最理想的除草剂是马歇特(水平1)、盖草能(水平1)和拿捕净(水平3),也就是1000ml/hm~2马歇特、300ml/hm~2盖草能和1500ml/hm~2拿捕净。
短句来源
    By separation and purification, our laboratory have obtained one natural protein with molecular weight of 24 kDa named TBa (tartary buckwheat allergen) from the Yunnan tartary buckwheat weeds, and it was identified as one of the major allergens in the tartary buckwheat by immunoblot.
    本实验室曾以我国云南苦荞种子为原料,经分离纯化获得纯度均一的24 kDa天然蛋白,命名为TBa(tartary buckwheat allergen),通过免疫学检测发现其为苦荞中的主要过敏原。
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  weeds
canadensis including length, surface area, volume, and average diameter are greater than for composite exotic weeds.
      
Information on specific features of distribution and activity of introduced species growing feral and accidental weeds in different forest types is presented.
      
Cultivated plants and weeds in fields of the Penza Volga region in the middle ages
      
Geobotanical investigations demonstrated that the transformation of the species composition of herbs from weeds to predominantly meadow plants occurred in five-ten years after the soil was no more used for farming.
      
The algorithm separates the weed area from soil background according to the color eigenvalue, which is obtained by analyzing the color difference between the weeds and background in three color spaces RGB, rgb and HSI.
      
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This study has been carried out on the experimental farm of Shenyang Agricultural College for many years.In the light of the combination of the farm mechanization and agricultural technology,the field work procedure was put forword by using home made machinery to realize the mechaniza- tion of corn cultivation.That is,under present condition,we can carry out plowing,harrowing,soil compacting,chemical weed controlling,sowing, inter-row cultivating,additional fertilizing and hilling,threshing,etc.by using...

This study has been carried out on the experimental farm of Shenyang Agricultural College for many years.In the light of the combination of the farm mechanization and agricultural technology,the field work procedure was put forword by using home made machinery to realize the mechaniza- tion of corn cultivation.That is,under present condition,we can carry out plowing,harrowing,soil compacting,chemical weed controlling,sowing, inter-row cultivating,additional fertilizing and hilling,threshing,etc.by using existing farm machines.This study pointed out the suitable date to carry out various field works,the noteworthy matters,and existing prob- lems.It provided the current situation of the corn harvester which we used. Practice has proved that utilizing such machines and carrying out special mechanized cultivation above-mentioned are able to raise the labour pro- ductivity,reduce labour intensity,improve the quality of field work and thereby gain the bumper harvest of corn.

通过多年在沈阳农学院农场的试验,从农机与农艺相结合的角度,提出了利用国产农机具实现玉米栽培机械化的具体做法,也就是在目前的条件下,完全可以利用现有的农业机械实现从翻地、耙地、镇压、喷洒除草剂、宽行距(70厘米)半精量播种、中耕除草、追肥培土到脱粒等方面的机械化作业,提出了各作业的时期、注意事项与存在的问题,同时提出了我们使用玉米收获机械的现状。实践证明,利用这样的机具与机械化栽培过程,是能够提高劳动生产率、降低劳动强度、提高作业质量的,从而也能获得玉米的丰收。

Ten kinds of vegetables were qerved as experimental materials and the ultra-thin plastic films were used as mulching materisls. The films are in three colours: Colourless transparent, green and black. They were covered on the soil surface arounding the plants of vegetables. In order to compare the effects of various films on growth, develop- ment and yields of vegetables. The results of test showed that three mulch ing malerials possess a significant effect in increasing soit temperature during the low temperature...

Ten kinds of vegetables were qerved as experimental materials and the ultra-thin plastic films were used as mulching materisls. The films are in three colours: Colourless transparent, green and black. They were covered on the soil surface arounding the plants of vegetables. In order to compare the effects of various films on growth, develop- ment and yields of vegetables. The results of test showed that three mulch ing malerials possess a significant effect in increasing soit temperature during the low temperature scasons. They can highten temperature of soil which covered with films about 3 to 5℃. As for the effeet of increasing temperature. The colourless transparent film is the best; the green is medium and the black is poor. All of these films have better effeets in preseruing water. Yet, the black and green films have a better effeet of controlling weeds. Film mulchings promoled the growth and deuelopment of both top Parts and roots of the vegetables and Strengthened the resisance to diseases and also increased the content of chlorophyll. Because of these reasons mentioned above, the yields of vegetables under mulehing condition can be increased about 1 to 1.5 fold in earlier period of the growing Season, the tolal production can be increased more than 30%, when compared with the nonmulching. However, the qua lity of fruits have no noticeable change.

作者利用无色透明、绿色和黑色三种极薄的塑料薄膜给各种蔬菜进行地面覆盖。结果证明在低温季节里三种地膜均有明显的提高地温效果和保水效果。有色地膜还有很好的除草效果。三种地膜均能促进蔬菜地上部和根系的生长发育,显著增产,尤以前期增产更为突出。蔬菜塑料薄膜地面覆盖在我国研究、示范和推广已有三年的历史。主要是采用无色透明地膜进行地面覆盖,对透明地膜研究的比较多。我们在1980年的试验结果也充分证明了透明地膜的性能和覆盖蔬菜的增产效果。但是对目前国内生产的一些有色地膜却研究极少,为了解有色地膜的性能和覆盖效应,找出适合蔬菜地面覆盖的地膜种类,扩大地膜在蔬菜上的应用,我们于1981年和1982年在本校标本园进行了无色透明膜、绿膜和黑膜三种地膜覆盖蔬菜的试验。 1981年对三种地膜的增温、保水、保肥、除草等性能进行了观测,并对促进地上部和地下部生长发育以及增产效果进行了调查记载。1982年对三种地膜覆盖后,蔬菜的肯绿素含量、光合同化量、气孔状况、抗病性能、果实品质以及产量进行了观测。以便叶定增产效果,力争找出增产机理。

Herbicide Ronstar has strong properties of controlling weeds. The efficiency of controlling weeds by Ronstar is above 90%. No side effect on N-fixation activity and plant characteristics in peanut has been found.

本试验说明,恶草灵除草能力强,除草效果在90%以上,对花生固氮活性及植株性状无不良影响.苗前喷施25%恶草灵0.2~0.3斤/亩,还可免去中耕.每亩喷药花不了半个工,比常规中耕约节省8~10个工,而产量与常规中耕基本相同.如花期能拔大草一次,则产量更高些.

 
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