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major factor
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  主要因子
    The results are as follows: N fertilizer was the major factor on the number of leaf,fibrous root,and the fresh weight of root and leaf,K fertilizer and P fertilizer then followed.
    结果表明:影响知母叶片数、须根数、根茎鲜重和叶片鲜重的主要因子是N肥,其次是K肥和P肥;
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    the major factor of increasing wheat seed quality is air temperature.
    提高小麦质量的主要因子为空气温度。
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    The relation between ginsenosides and starch is positive correlativity, the relation between ginsenosides and yield is little, but the relation between starch and yield is positive correlativity, and starch content is the major factor of yield composition.
    皂苷含量与淀粉含量呈正相关,皂苷与产量的相关性不大,淀粉与产量呈正相关,淀粉含量是人参产量构成的主要因子
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    Temperature is the major factor affecting maize growth duration.
    气温是影响玉米生育期长短的主要因子,日均温与生育期的相关系数r_(鲁玉10)=-0.954~(**),r_(农大108)=-0.995~(**)都达极显著水平。
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    In dry years,the major factor constrainingwheat yield is soil water while in humid years,the main factor affecting wheat yield is fer-tilizer.
    干旱年限制小麦产量的主要因子是水分,湿润年限制小麦产量的主要因子是肥料。
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  “major factor”译为未确定词的双语例句
    Study on major factor in the responses to photo temperature condition of soybeans from China
    中国大豆品种光温综合反应与短光照反应的关系
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    Aluminum (Al) toxicity is a major factor limiting plant growth on acid soil.
    铝毒害是酸性土壤中限制植物生长的重要逆境因子。
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    Polima (pol) CMS has been widely used for hybrid breeding, but how to select its appropriate restorer lines has been a major factor in the process.
    波里马细胞质雄性不育(pol CMS)已被广泛应用于油菜杂交种的选育,选育其合适的恢复系己成为应用该CMS进行杂交种选育的一个重要方面。
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    However, F_1 hybrid sterility between indica and japonica is a major factor preventing application of heterosis in indica-japonica hybrids in rice production.
    但是亚种间杂种F_1通常表现部分不育,这限制了其强大杂种优势在生产上的有效利用。
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    However, nucleotide compositional bias was the major factor in accounting for the variation of codon usage in the rice nuclear genome. On the contrary, the codon usage of the japonica rice chloroplast and mitochondrion genomes were mainly attributable to the gene expression level.
    其中核苷酸的组成偏好是影响核基因组的首要因素,而粳稻叶绿体和线粒体则主要受到基因表达水平的影响。
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  major factor
The structure of the compounds was a major factor determining the degree of sorption.
      
Endogenous inhibitors of angiogenesis are proved to be a major factor preventing the emergence of clinically manifested stages of human cancer.
      
It was concluded that the molecular mobility is the major factor determining the electron transport properties of the systems of interest.
      
As a rule, complexonates are much more effective them the corresponding acids; if the complexing agent is fixed, then the stability constants (Ks) of the complexes become the major factor.
      
The French-Russian cooperation in radiochemistry actively develops today and is a major factor in the progress of this science and nuclear industry in these two countries.
      
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“233”,a high-yielding semidwarf hsien rice(Oryza saliva,subsp. indica)early variety,which had been bred by Fujian agricultural college, was developed by crossing Zhen-long 410 with Colan-bologo.from 1975- 1978.It was planted about 15000 hectares in Fujian province in 1981.It's yield about 6000kg./ha.while it may yield as high as 9000kg./ha.under favorable condition. The experiments indicated“233”was a 110-125 days growth duration variety,and made it suitable for double-cropping.Temperature is one of the major...

“233”,a high-yielding semidwarf hsien rice(Oryza saliva,subsp. indica)early variety,which had been bred by Fujian agricultural college, was developed by crossing Zhen-long 410 with Colan-bologo.from 1975- 1978.It was planted about 15000 hectares in Fujian province in 1981.It's yield about 6000kg./ha.while it may yield as high as 9000kg./ha.under favorable condition. The experiments indicated“233”was a 110-125 days growth duration variety,and made it suitable for double-cropping.Temperature is one of the major factors affecting“233”growth duration.and the effective temp- erature summation for“233”growth duration.is 1450±21.8°C. When 4th,5th,6th,and 7th.leaves were cut off,the number of tillers reduced.And the number of panicles decreased,if the 8th,9th,10th,11th. and 12th.leaves were out off.Kernels per panicle decreased when 8th and 9th.leaves were cut off.Furthermore.the rate of filled grains was much less then the control,when the 10th.11th,andl2th,leaves were cut off. Most primary tillers of“233”grow out from 4th,5th,and 6th.nodes of the main culm and give rise to secondary tillers,within 8-15 days after transplantation. During the panicle development stage,the panicle continues to develop slowly,when it has grown to a length of 5cm.The grains per panicle are determined by the number of branches and spikelet primordia differentiated. The number of primary branches was more than the number of secondary branches in high yield(7500-9000)kg./ha.,and while the yield of 4500 7500kg./ha.,secondary branches were more than primary branches.

早籼“233”是福建农学院遗传育种教研组用珍龙410与石轮棒杂交、回交,于1978年育成的。1981年全省推广30万亩,亩产可达1200斤,一般700~900斤。1981年早季采用不同时期剪叶处理,探讨不同叶层与产量构成因素的关系。观察分蘖特性、幼穗发育。乳熟期采用去叶、去穗处理探讨主茎与分薛养分的运转关系。并进行大面积生产调查。所有材料分别进行方差分析、新极差测验。主要结果如下:1.“233”全生育期110~125天,12—13叶,有效积温1450±21.8℃。稻米粗旦白质含量11.049%,16种氨基酸含量90.93/毫克。2.剪除4—7/0叶影响分蘖数。剪除8~12/0叶影响分蘖成穗率。剪除10-12/0叶削减茎秆单位长度干重、穗粒数和粒重。3.“233”多数分蘖着生于4/0、5/0、6/0三节位。主穗与分蘖穗的养分供应有相对独立性。但分蘖叶提供主穗的同化物多于主茎叶供应分蘖穗。

Multiple regression relationships of grain yield of rice on the numberof panicles per plant,number of grains in the main panicle,growth rate,harvest index and biological yield were analysed in 26 combinations ofcharacters.The regressions were significant wherever harvest indexand/or biological yield were included,and vice versa.The Up of bio-logical yield was the highest among all.Path analysis showed that biolo-gical yield contributed most to grain yield,harvest index ranked nextand the effect of growth rate...

Multiple regression relationships of grain yield of rice on the numberof panicles per plant,number of grains in the main panicle,growth rate,harvest index and biological yield were analysed in 26 combinations ofcharacters.The regressions were significant wherever harvest indexand/or biological yield were included,and vice versa.The Up of bio-logical yield was the highest among all.Path analysis showed that biolo-gical yield contributed most to grain yield,harvest index ranked nextand the effect of growth rate on grain yield was the least.Of the variouscharacter-combinations,eight had R=0.99 (R~2=0.98).These eight char-acter combinations controlled 98.0% of the variation of grain yield,in-dicating that they were the major factors influencing grain yield.

用单株穗数、主穗粒数、生长率、收获指数、生物学产量与籽粒产量的回归关系,分析了水稻的5个经济性状共26种组合。结果表明,只要有收获指数、生物学产量单独参与或共同参与组合的,回归就显著;没有这两个性状参与的就不显著,并且以生物学产量的 Up 最大。通径分析表明,生物学产量对籽粒产量的贡献最大,收获指数次之,生长率对籽粒产量影响最小。各种排列组合中,R=0.99的有8种,(R~2=0.98),这8种组合,控制了籽粒产量变异的98.0%,说明它们是影响产量的主要因素。

The basic characters and evolution laws of ecotypes of wheat var- ieties are 9f great significance in a series of basic breeding key links such as working out the breeding objectives/parent material matching/ selection of hybrid descendants/identification of accommodation of wh- eat varieties.As a result,research on ecotypes of wheat varieties has increasingly arrested great attention from the breeders. Based on research by the predecessors,this paper defined the basic characters of ecotypes and variable meanings...

The basic characters and evolution laws of ecotypes of wheat var- ieties are 9f great significance in a series of basic breeding key links such as working out the breeding objectives/parent material matching/ selection of hybrid descendants/identification of accommodation of wh- eat varieties.As a result,research on ecotypes of wheat varieties has increasingly arrested great attention from the breeders. Based on research by the predecessors,this paper defined the basic characters of ecotypes and variable meanings and presented the primary statistical method of classification—univariant analysis and multivai- ate analysis. Univariant analysis is to use the variance analysis and multiple Comparison to judge the differential capacity of performances of wheat varieties so as to determine the stability of performances of them. The quantitive differential types of their performances were given by means of Nair level group method. Multivariate analysis is to use R-typer factor to judge the basic characters and variable natures of ecotypes of wheat varieties.The first component of correlation matric stands for the basic characters of ecotypes of wheat varieties.The second and third components stand for the variable natures of ecotypes.The subecotypes were differentiated in the terms of accumulation of major factors.The representative spieces in the eco-environment were analysed and determined by Q-type factors. Information obtained by multivariate analysis is richer,more concen- trated and easier to do classification and explanation than that by uni- variant analysis.

作物品种生态型的基本特点及其演变规律,对制定作物育种目标、亲本选配、杂种后代选择,以及品种适应性鉴定等一系列基本育种环节,都具有极为重要的指导意义。因此品种生态类型的研究,日益引起育种工作者的关注。本文在前人研究的基础上,给出了生态型基本特征和可变特征的含义,并给出了区分它们的初步的统计方法——单变量分析法和多变量分析法。单变量分析法运用方差分析和多重比较来判断品种性状的区分能力,以确定性状的稳定性,运用 Nair 水平分组法给出各性状的定量的区分类型。多变量分析法运用 R 型因子分析来判断品种生态型的基本特征和可变特征。相关矩阵的第一主成分代表品种生态型的基本特征,第二、第三等主成份代表生态型的可变特征。按主日子进行聚类来区分生态型的亚型。运用 Q 型因子分析判断生态地区的代表品种。多变量分析方法比单变量分析方法获得的信息丰富、集中,且便于分类和解释。

 
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