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high yield population
相关语句
  高产群体
     Establishment and Test of LAI Dynamic Simulation Model for High Yield Population
     作物高产群体LAI动态模拟模型的建立与检验
短句来源
     Taking single cropping late rice Wuyujing 5 and 93 25 as contrast,the variety characters and the high yield population quality indexes were studied.
     试验以单晚稻武育粳 5 号和 9325 为对照,研究武运粳 7 号的特征特性和高产群体质量指标。
短句来源
     The Factor Analyses of High Yield Population and Related Culture Methods of Cotton in North Xinjiang
     新疆北疆棉花高产群体因素分析及其栽培技术途径
短句来源
     Studies on Physiologic Index of High Yield Population of Xinyu No.9
     新玉9号高产群体生理指标的研究
短句来源
     Structure and Control on High Yield Population of Hybrid Rice D-you 3232 in System of Rice Intensification(SRI)
     强化栽培下杂交稻D优3232高产群体的构建与调控
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  “high yield population”译为未确定词的双语例句
     STUDIES ON THE PATTERNS OF PHOTOSYNTHATE DIURNAL VARIATION IN POTATO HIGH YIELD POPULATION PLANTS Ⅱ.NON-REDUCING SUGAR CONTENT AND ITS DIURNAL VARIATION
     马铃薯丰产群体植株光合产物日变化规律的研究(二) 非还原糖含量及其日变化
短句来源
     STUDIES ON THE PATTERNS OF PHOTOSYNTHATE DIURNAL VARIATION IN POTATO HIGH YIELD POPULATION PLANTS Ⅳ. STARCH CONTENT AND ITS DIURNAL VARIATION
     马铃薯丰产群体植株光合产物日变化规律的研究(四) 淀粉含量及其日变化
短句来源
     But in tuber swelling stage the diurnal variation of the starch content in tubers of high yield population shows a low peak at night because of the rapid growth of tubers at night.
     整个生育期间两群体块茎淀粉含量高于叶片和茎秆,并均随生育期的推移而逐渐增加,但丰产群体始终低于一般群体。
短句来源
     (4) The growth indexes of high yield population were proposed.
     (4)提出了高产油葵群体有关生理指标
短句来源
     the lowest layer transmittance can be taken as high yield population structure guiding check target in full-bloom and boll-forming stage.
     若底层透光率过高 ,则漏光损失大 ,光能利用率低 ,净光合产物少 ,所以群体底层透光率过低或过高 ,籽棉产量均减产 ,且达到显著或极显著水平。
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  相似匹配句对
     the product yield was high.
     结果:用挤出滚圆法制备的杞芪微丸圆整度好,大小均匀,成品收率高。
短句来源
     HIGH YIELD PULPING OF LARCH
     落叶松高得率制浆的研究
短句来源
     Culture of Rice Population with High Yield
     水稻高产群体的培育
短句来源
     POPULATION IMPROVEMENT OF DUCK WITH HIGH-YIELD
     高产家鸭群体改良
短句来源
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Studies on the production and distribution of dry matter were made during the period from1977 to 1979 in high-yielding populations of single cropped mid-seasoned hybrid rice cultivars.Highyield of 725.4,716.25 and 709.5 kg/mu was obtained respectively by three cultivars,namely,Nan-yuNo.3,Gan-hua No.2,and V20A×Giu630.It was found that the production of dry matter is closelyrelated to the grain yield of these hybrids;the increase of grain yield depends upon the increase ofthe total...

Studies on the production and distribution of dry matter were made during the period from1977 to 1979 in high-yielding populations of single cropped mid-seasoned hybrid rice cultivars.Highyield of 725.4,716.25 and 709.5 kg/mu was obtained respectively by three cultivars,namely,Nan-yuNo.3,Gan-hua No.2,and V20A×Giu630.It was found that the production of dry matter is closelyrelated to the grain yield of these hybrids;the increase of grain yield depends upon the increase ofthe total amount of dry matter produced.Heterosis in the production and storage of dry matter wasmanifested in the earlier stages.This heterotic effect is closely related to the total photosynthetic area.Heterosis in net assimilation rate was also observed in the earlier stages,but it disappeared later.Theproduction of dry matter is also related to the canopy structure and the planting season;early trans-planting of seedlings usually brings about high yield.High-yielding plots nsually have a higher coefficient of economic yield(Ke),which is closelyrelated to the cultural conditions.The increase of the dry weight of tillers and that per unit area ofleaves is favourable to the formation of an ideal canopy.In order to increasa the rate of seed-setting.It is necessary to increase the photosynthetic productsalloted to the spikelets at the heading stage.It is important in hlgh-yield culture of hybrid rice to utilize the heterosis of vegetative growthfor better seed-setting and filling of grains,to improve the efficieney of the light-receiving capacityof the popvlations and to maintain better daily increase of dry weight during the later atages.The rate of growth between the different organs and the different growth staoes should also becoordinated.The maximum number of tillers should be kept below 350 thousand per mu,whereas themaximum leaf area index should be manipulated to about 7.5-8.

1977~1979年,作者在杂交稻高产栽培过程中,研究了高产群体的干物质生产与分配。高产田谷粒产量与干物质产量密切相关。水稻生长前期总光合势的迅速增加,导致干物质生产与积累表现优势,净同化率的优势前期明显,后期消失。适期早栽、冠层结构良好,干物质产量较高。改善栽培条件,有利提高经济系数。增加单蘖的干物质和单位叶面积的干重,有利于建成高产群体。杂交稻高产栽培关键在于合理利用营养优势,提高光能利用率、协调器官之间和生育期间的生长。最高茎蘖数不超过35万/亩,最高叶面积指数保持在7.5~8左右为好。

The relationship between the constitution of population and the ontogenesis of soybean was discussed in this paper. The cultural practice showed that the optimum constitution of population is the bais of stable and higher yield of soybean. In order to make a high yield population an excellent individual is needed under certain population. The effect of increase in yield varies depending upon various varieties under the conditions where the widths fo rows are the same and the plant stand densities...

The relationship between the constitution of population and the ontogenesis of soybean was discussed in this paper. The cultural practice showed that the optimum constitution of population is the bais of stable and higher yield of soybean. In order to make a high yield population an excellent individual is needed under certain population. The effect of increase in yield varies depending upon various varieties under the conditions where the widths fo rows are the same and the plant stand densities are different. As a result of narrowing the width of the vegetative area is more optimum. It's optimum distribution increase photosynthesis rates, ability of absorbing nutrients from the soil and consequent yield of soybean. Hill-planting is one of the available cultural practices of soybean production because of having wide spacing in the rows, improving air and light conditions, and photosynthesis rates. The results also showed that the cover of rows can be delayed by 5-7 days and yield of soybean can be increased by 4-14.6% after the application of hill-planting.

哈尔滨地区,在宽行距情况下,密度和产量的关系,因品种不同而各异。早熟品种丰收11,棵矮单株生产潜力低,每平方米50~70株的较30株的增产11.7~12.8%,而中熟和中晚熟品种,每平方米则以25~30株为适宜。在相同密度条件下,缩小行距有很大增产潜力,增产的幅度是7.4~13.8%。缩小行距后,相对延长了株距,使个体获得良好生育环境,促进增产。穴播主要在肥水充足的高产栽培条件下,能通风透光,提高光能利用率,增产幅度为4~14.6%。通过合理密植和合理群体摆布,使个体达到良好生育,并保持优良的群体,因而达到稳产、高产。

Light distribution not only is related to how much solar energy is intercepted but also affects the yield of crops.This study was conducted. in 1981~1983,on Shenyang Agricultural College's experimental field. We studied the layer structure of and light distribution in high yield corn population and their effects,on yield,using canopy analysis and mathemati- cal statistical methods.The leaf layer structure of and the light distribu- tion in corn population at different stages of growth and development and the...

Light distribution not only is related to how much solar energy is intercepted but also affects the yield of crops.This study was conducted. in 1981~1983,on Shenyang Agricultural College's experimental field. We studied the layer structure of and light distribution in high yield corn population and their effects,on yield,using canopy analysis and mathemati- cal statistical methods.The leaf layer structure of and the light distribu- tion in corn population at different stages of growth and development and the relationship between them were analyzed.The results of the experi- ment showed,as the corn plant entered its middle and late stages of growth,the number of leaf layers increased,the leaf layer structure became more and more complicated and the light intensity decreased from top to bottom logarithmically with the increase in the number of leaf layers,in conformity with Beer-lambert's Law.Accoding to theoritical analysis of light distribution,extinction coefficient varied with different populations, for instance,extinction coefficient was smaller for wide row spacing than narrow row spacing.In terms of crop variety,the extinction coeffi- cient of taller varieties was greater than that of shorter varieties.Gen- erally,extinction coefficient decreased with the increase in planting density.Therefore,to obtain a high yield population structre and to ra- tionally utilize solar energy,we must choose not only the tolerant and high yield variety,but also a good planting pattern

光分布关系到作物群体能截获多少日光能并影响产量的高低。本研究于1981~1983年在沈阳农学院试验地以丹玉6、沈单3和沈农171×330为试材,用大田切片法和数理统计概念,分析了玉米不同生育阶段的叶层结构及其光分布的关系。分析结果表明,至玉米生育中期和后期,随着叶层的增加,群体内的光强度自上而下星对数方式下降,其规律符合 Beerlambert 定律。经不同群体光分布理论分析,不同玉米群体的消光系数存在着差异,如植株高大品种大于植株矮小品种,宽行大垄小于窄行小垄,密度增大消光系数降低。因此,为了建立高产群体结构和合理利用光能,既要考虑选用耐密高产品种,又要注意确定适宜的种植方式。

 
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