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irrigation
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  灌溉
    Study on Crop Response to Soil Water-Salt and Its Modelling for Saline Soil under Water-saving Irrigation
    含盐土壤节水灌溉下作物—水—盐响应关系及模型研究
短句来源
    A Study on the Change Rules of Grain Amino Acids Content of Wheat on the Plain Irrigation District in the North of Henan
    豫北平原灌溉小麦籽粒氨基酸含量变化规律的研究
短句来源
    The Water-saving Irrigation System of winter wheat in Different Climatic Divisions of Semiarid Area in Hebei
    河北省半干旱地区不同类型区冬小麦的节水灌溉制度
短句来源
    STUDY ON IRRIGATION SYSTEM OF GRASSFARM IN THE XILAMULUN RIVER CATCHMENT
    西拉木伦河流域禾草草场灌溉制度的研究
短句来源
    Study on Physiological Effects of Different Irrigation Methods of Rice
    不同灌溉方式的水稻生理效应研究
短句来源
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  灌水
    Physiological Indicators for Cotton Irrigation
    棉花灌水的生理指标
短句来源
    A Study of the Eeffects of Different Soil Water Potentials and Optimum Water Petential Value of Irrigation on Rape
    不同土水势对油菜的影响及适宜灌水势值研究
短句来源
    Effect of Irrigation Quota for Wheat on Topdressing Urea Efficiency
    小麦灌水定额对追施尿素肥效的影响
短句来源
    Study on Water Consumption Characteristics and Water Use Efficiency of Flue-cured Tobacco under Different Irrigation
    不同灌水条件下烤烟耗水特征和用水效率的研究
短句来源
    The Law of Water Cnsumption by Winter Wheat under Different Irrigation Treatments and the Determination of Water Saving Irrigation Scheme
    不同灌水处理冬小麦耗水规律与节水灌溉方案确立
短句来源
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    PRELIMINARY INVESTIGATION ON REGULARITY OF WATER AND SALT MOVEMENT IN IRRIGATION AND DRAINAGE RIVERS IN SHANGHAI WUSI STATE FARM
    上海五四农场排河道水盐运动规律初探
短句来源
    A Study on the Method of Miniarea Cultivation, Covering Material and Supplementary Irrigation Period in Cold and SemiArid Area
    半干旱冷凉区微型种植方法、覆盖材料和补时期研究
短句来源
    Study on Wheat of Film Hole Irrigation in Weibei Dry Plateau
    渭北旱塬膜上小麦研究初报
短句来源
    Effect of irrigation with catchment of rainfall on yield and water use efficiency of film mulched spring wheat
    集雨节对地膜春小麦的产量和水分利用效率的影响
短句来源
    Study on the Techniques of Catchmental Limited Irrigation in Film Mulching Wheat
    地膜小麦集水有限补技术研究
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  “irrigation”译为未确定词的双语例句
    Water saving sprinkling irrigation in high-yield cultivation of spring wheat
    春小麦喷灌节水高产栽培技术的试验研究
短句来源
    Yield Increasing Techniques for Wheat Over Large Area in Newly-Built Irrigation System in the East Part of Guanzhong
    关中东部新灌区小麦大面积增产技术的研究
短句来源
    The Effect of Top-dressing and Irrigation Time on the Root System,Root Activities and Plant Characters in Winter Wheat
    不同时期追施肥水对冬小麦根系、根系活性和植株性状的影响
短句来源
    Wheat Water-Production Function in Yimin Irrigation District
    益民灌区小麦水分生产函数的研究
短句来源
    Research on Technology of Seepage Irrigation Water Supplementation Plus Mulching in Rainfed Land Orchards and Its Application
    旱地苹果园渗灌补水加覆盖技术研究与应用
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  irrigation
Characteristics of root growth in a fast-growing and high-yield poplar plantation under subsurface drip-irrigation
      
'I-214') were studied under two contrasting conditions, subsurface drip-irrigation (SDI) and normal irrigation (CK), on the sandy soil of Chaobai River, Beijing.
      
The Dabieshan District is a main ecological area with a function of soil and water conservation where seven large reservoirs and irrigation systems of the Pishihang are distributed.
      
Spraying wheat seedlings with these extracts, in contrast to the irrigation of soil, markedly diminished infection in plants with powdery mildew.
      
Since infiltration arises as a result of irrigation or input from atmospheric water, it actually acts in certain seasons of the year and not all year long.
      
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An investigation,on the bud and the root with regard to the stubble cane and its pro-duction,had been carried out,during the years 1961 and 1962 in Fukien province,and thepreliminary results were summarized briefly as follows:1.By employing the radio-active element p32 as a tracer,it was shown that the old rootsystem of the stubble was capable of absorption early in the growing season.In so doing,the stubble cane was able to make an earlier start in growth than that of the newly plantedcane.(See tables 1 to...

An investigation,on the bud and the root with regard to the stubble cane and its pro-duction,had been carried out,during the years 1961 and 1962 in Fukien province,and thepreliminary results were summarized briefly as follows:1.By employing the radio-active element p32 as a tracer,it was shown that the old rootsystem of the stubble was capable of absorption early in the growing season.In so doing,the stubble cane was able to make an earlier start in growth than that of the newly plantedcane.(See tables 1 to 3).2.We found that permanent roots appeared on the ratoon,soon after its emergence fromthe stubble cane,while,in contrast,the newly planted cane produced only permanent rootsafter it possessed two true leaves.The ability of the ratoon to produce permanent roots de-pended on the number of bud scales.Usually,the more the number of scales,the earlier andbetter production of permanent roots.(See tables 4 to 5).3.The number of bud scales on buds appearing at different nodes on the same cane wasfound to be different,being more at the basal portion,and decreasing in number toward thedistal end.Likewise,the number of scales on an opened bud was found to be higher thanthose of the unopened ones on the same node in different cane.(See tables 9 to 12).4.New canes arising from buds occurring on the basal portion up to a height fivecentimeters of the residual stock were larger,more vigorous and constituted the effectivecanes in crop production.It was further shown,that the crowded nodes,often enveloped inthe scales of the residual stock,were able to differentiate normal and healthy buds.Themanner and time of the formation of these buds remained as problems to be studied later.(See taables 6 to 8).5.We would like to stress the fact that the performance of the buds and the roots forthe stubble canes referred to above as important factors in sugar cane production,wasintimately linked up with the external factors including cultural operations.The productionof earlier,more and stouter canes was often influenced by a number of cultural treatmentsthey received during the previous season.Among these cultural treatments,we listed thefollowings:(1) harvesting of canes properly conducted;(2) good care and protection ofstubbles through the winter;(3) proper cultivation and preparation of cane beds during earlyspring;(4) adequate fertilization,cultivation and irrigation of the preceding crops;and (5)chemical and biological control measures of pests and diseases well executed.(See tables 13to 28).

通过解剖和应用 P~(32)示踪,明确了各节位蔗芽的构造,老根系的作用,以及根系提早发生的原因。研究了宿根甘蔗的丰产技术,认为破畦松兜的增产效果最为明显。

The leaf-shade of rice plant often exhibits fluctuation during its development.Thisfluctuation is brought about mainly by agricultural practices(manuring,irrigation,etc.),al-though the age effect of individual leaves sometimes takes a definite part.Leaves usuallyappear to be light and dark of leaf-shade before and after a nitrogen top-dressing or a watershortage,the physiological basis of this shade change is the change of nitrogen content andthe subsequent change of chlorophyll content in the leaf tissue.Thus...

The leaf-shade of rice plant often exhibits fluctuation during its development.Thisfluctuation is brought about mainly by agricultural practices(manuring,irrigation,etc.),al-though the age effect of individual leaves sometimes takes a definite part.Leaves usuallyappear to be light and dark of leaf-shade before and after a nitrogen top-dressing or a watershortage,the physiological basis of this shade change is the change of nitrogen content andthe subsequent change of chlorophyll content in the leaf tissue.Thus the leaf-shade of riceplant may be used as one of the criteria for top-dressing and irrigation.The fluctuation pattern of leaf-shade during the whole growth period may be changed atwill by agricultural practices.It is neither fixed nor necessarily related to grain yield as someauthors supposed to be so.

本文是总结陈永康同志单季晚稻看苗诊断技术的一部分,以丰产田及对此试验田的叶色变化为对象,从植物生理学的角度来探索叶色变化与产量的关系。单季晚稻的产量与叶色变化没有必然联系,叶色变化是水稻生育过程中内外因素共同作用的结果。出叶期、叶片着生部位及单叶叶色变化过程都是水稻的生物学特性,为叶色变化提供了内在基础。肥水技术通过植株和叶片的生理活动影响着叶色变化,所以肥水技术是制约叶色变化的主要外因。

Cotton plantation in Shensi Province is mostly located in the droughty plains where,according to historical reasons,the cotton yields are low,thus the farmers are often hesitatinglyto choose this crop for their cultivation.According to meteorological analysis and water re-quirement studies,as well as to several years successive high yields obtained in the cultiva-tion trials,we are confident that the suitability of Shensi droughty plains for cotton growingis out of question.Through the analysis of our experimental...

Cotton plantation in Shensi Province is mostly located in the droughty plains where,according to historical reasons,the cotton yields are low,thus the farmers are often hesitatinglyto choose this crop for their cultivation.According to meteorological analysis and water re-quirement studies,as well as to several years successive high yields obtained in the cultiva-tion trials,we are confident that the suitability of Shensi droughty plains for cotton growingis out of question.Through the analysis of our experimental data,the cotton field which gained a yield of50 kilograms per mu.requires 500—700 mm.of rainfalls through the whole growing season.In the middle part of Shensi,500—700 mm.of rainfalls is often concentrated during April toSeptember.Although the variability of rainfall frequency is common,but the yearly,rainfallbelow 400 mm is rare.Furthermore,the soil structure in Shensi is rather nice in keepingmoisture,provided that proper cultivation is to be practiced.In the droughty plain a soilwater content of 15% is recorded during March to May within the layer of 0—10 c.m.of thesoil and with even more moisture below that level whereas it makes a very advantageouscondition for cotton sowing and germination of seeds.Since 1955 to 1958,cotton cultivations in Wu-kun,Chien-shen,and Bu-chen had been de-monstrated with the yields reaching twice and thrice in comparison with the ordinary fields.Hence,the droughty plain cotton plantation has been developed considerably and a yearlyincrease of 54.4% in cultivated area and 128.1% per unit area yields had been obtained in theyears of 1958—1961,as compared with the economic restoration stage right after the libera-tion.The cotton growing in droughty plains is of great economic value to the native farmersas well as to the facility of agricultural mechanization.Owing to the fact that the availability of irrigation in Shensi is still limited in the recentfuture,it will be still an important measure to develop cotton plantation in droughty plains.

根据关中地区水文气象条件和棉花需水规律的研究资料分析,说明关中的气候和土壤资源完全能满足旱地棉花丰产所要求的条件。丰产示范结果进一步证明关中旱地棉田是能够获得高产和稳产的,其关键在于掌握自然特点,运用旱地丰产栽培技术,保证全苗和促进早期发育。

 
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