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rice population
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  水稻群体
     Penning de Vries's modelling methodology and fundamental frame of L1D and TIL modules of MACROS,a dynamic simulation model of quality indexes in rice population suitable to local soil,climate and other varietal characters was conducted according through field trials and documental data.
     Penning de Vries的建模思想和 MACROS中 L1 D、TIL的基本框架 ,通过田间试验和文献资料的收集 ,组建了适合本地土壤条件、气候状况和品种特性的水稻群体质量指标动态模拟模型。
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     GENETIC ANALYSIS OF A ROLLED-LEAF MUTANT IN RICE POPULATION OF T-DNA INSERTION
     T-DNA插入水稻群体中卷叶突变体R1-A2的遗传分析
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     Study on Source sink Characteristics and High yield Cultivation Strategies of Rice Population
     水稻群体源库特征及高产栽培策略研究
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     Study on Effect of Transplanting Density on Rice Population Quality and Yield Forming Principle
     移栽密度对水稻群体质量的影响及产量形成规律的研究
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     When K fertilizer was applied as basal dressing, K uptake of rice population amounted to maximum at the K2O application rate of 12.8 kg/667m2 and excessive-fertilization decreased population K uptake, grains K absorption always increased with the increase of K fertilizer application rate, only the increment extent decreased gradually.
     结果表明,钾肥一次性基施,水稻群体吸钾量在K2O用量为12.8kg/667m2时最大,过量施钾却降低了群体吸钾量,稻谷吸钾量随钾肥用量的增加而增大,增幅则逐渐降低;
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  水稻种群
     Study on Productivity of the Middle Generation of Rice Population Breeding with High Temperature Stress
     高温胁迫下水稻种群育种中间世代生产力初探
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     Some polymorphic fragments in mutation lines were also amplified in other rice lines, suggesting that radiation - induced mutations are not totally new in the natural rice population, some of which may be revertant mutation.
     另外发现突变体中出现的多态片段有二部分也存在于其他品种中,说明辐射引起的突变在整个水稻种群中并不一定是全新的,有的可能属于回复突变
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  “rice population”译为未确定词的双语例句
     An rice population consisting of 90 F 3 lines from TN1/Guiyigu was employed to analyze linkage between DNA markers and a new gene Wbph6(t) conferring resistance to the whitebacked planthopper.
     应用由 90个株系组成的 TN1/鬼衣谷 F3 群体 ,分析了水稻抗白背飞虱新基因 Wbph6 (t)与 DNA标记的连锁关系。
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     The analysis of stable 718 rice population derived in early generation
     水稻早世代稳定718群体的获得及分析
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     Ac/Ds Transposition Activity in Transgenic Rice Population and DNA Flanking Sequence of Ds Insertion Sites
     Ac/Ds转座系统在水稻转化群体中的转座活性及转座子插入位点旁侧序列的分析(英文)
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     SARII-628 is a twin-seedling rice population kept in Rice Research Institution of Sichuan Agricultural University, from which haploid-diploid (n: 2n) or triploid-diploid (2n: 3n) twin-seedling rice emerged annually.
     SARII-628是四川农业大学水稻所的一个双胚苗自然群体,每年都能定期分离出单倍体与二倍体(n:2n)、二倍体与三倍体(2n:3n)的双苗植株。
短句来源
     5. A rice population consisting of 90 TN1 / GYG F3 lines was employed to analyze linkage between DMA markers and a new gene Wbph6(t) conferring resistance to the whitebacked planthopper.
     5、通过简单序列重复多态性(SSLP)的方法,应用由90个株系组成的TN1/鬼衣谷F_3群体,分析了水稻抗白背飞虱新基因Wbph6(t)与DNA标记的连锁关系。
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  rice population
Four quantitative trait loci (QTLs) for P uptake were previously identified in a rice population that had been developed from a cross between the indica landrace Kasalath (high P uptake) with the japonica cultivar Nipponbare (low P uptake).
      
A dwarf mutant glu was identified from screening of T-DNA tagged rice population.
      
RFLP mapping of isozymes, RAPD and QTLs for grain shape, brown planthopper resistance in a doubled haploid rice population
      
It is supposed that declining and fragmentation of the wild rice population, which happened during the 10 years, caused loss of genetic variability and forced the habitually outbreeding plants to inbreed, accelerating a reduction in gene variability.
      
During 10 years from 1985 to 1994, the wild-rice population at this site was seriously destroyed and fragmented.
      
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The experiment herein described was carried out in the West Suburbs of Peking in theyears 1961 and 1962,to compare the high-yielding characteristics of three different types ofrice populations,under different levels of fertilizer application as follows:(1) 120 thousandseedlings per mu with tillering actively stimulated;(2) 180 thousand seedlings per mu withtillering stimulated;(3) 240 thousand seedlings per mu with tillering controlled.The resultsobtained are as follows:1.Results obtained in both years...

The experiment herein described was carried out in the West Suburbs of Peking in theyears 1961 and 1962,to compare the high-yielding characteristics of three different types ofrice populations,under different levels of fertilizer application as follows:(1) 120 thousandseedlings per mu with tillering actively stimulated;(2) 180 thousand seedlings per mu withtillering stimulated;(3) 240 thousand seedlings per mu with tillering controlled.The resultsobtained are as follows:1.Results obtained in both years all indicate that under higher level of fertilizer applica-tion,the yield is higher with populations made up by transplanting 120 thousand seedlings permu with tillering actively stimulated,relying upon ears of main-stems as well as ears of tillers.And,that under lower level of fertilizer application,the yield is higher with populations formedby transplanting 240 thousand seedlings per mu with tillering controlled,depending chiefly onears of main-stems.2.The percentage of tiller-ears is closely related with the yield of the population andthe number of grains per ear.Under higher level of fertilizer application,there shows asignificant positive correlation between the percentage of tiller-ears and the yield of the popula-tion,whereas under lower level of fertilizer application,a negative correlation is shown.Thecorrelation between the percentage of tiller-ears and the number of spikelets per ear underhigher level of fertilizer application,is significantly positive,no matter be it a simple correla-tion or a partial correlation;and under lower level of fertilizer application,correlations areall not significant.The authors believe that the main factor leading to the higher yieldunder higher level of fertilizer application is the increased number of grains per ear,obtainedby transplanting fewer seedlings and encouraging tillering so as to increase the percentage oftiller-ears.3.In comparing results obtained in both years of the productivities between ears ofmain-stems and ears of tillers,it is found that within rice populations there exists,in gen-eral,a superiority in ears of main-stems,i.e.the weight and the number of grains per main-stem-ear are superior to those of a tiller-ear;but the degree of superiority in main-stem-earsdiffers with rates of fertilizer application and types of populations,i.e.the superiority in earsof main-stems is lower in populations with either fewer seedlings transplanted,or under higherlevel of fertilizer application,and vise versa.4.Under lower level of fertilizer application,the production of dry-matter (Kg/mu) ofpopulations with more seedlings is superior to populations with fewer seedlings transplanted,throughout the whole period of growth,but under higher level of fertilizer application the pro-duction of dry matter of populations with more seedlings transplanted although is superiorto those with fewer seedlings transplanted,at the earlier stage of growth,the latter popula-tions catch up after the peak of tillering,and at the end there is not much difference in theproduction of dry matter per mu of both types of populations.The per mu weight of drymatter of a rice population is determined by the number of tillers per mu and the dry weight of individual tillers,but under lower level of fertilizer application the per mu weight of drymatter is determined chiefly by the number of tillers per mu,and is less related with theweight of individual tillers;the weight of individual tillers is however,as important as theper mu number of tillers under higher level of fertilizer application.5.The per mu yield of rice is not only determined by the weight of dry matter per mu,but also closely related with its economic coefficient (the percentage of ear-weight to the totalweight of the plant).In this experiment,it is observed that under higher level of fertilizerapplication,a higher yield is obtained in populations with fewer seedlings because its economiccoefficient is higher,despite of the per mu weight of dry matter is almost the same as thatwith more seedlings.The higher coefficient of populations with few

本文根据1961—1962二年试验结果,对三种不同类型的水群体结构,即“少苗促进分蘖”、“中苗促进分蘖”、“多苗控制分蘖”在不同施肥水平下的丰产特性,进行了分析和讨论,结果指出:在施肥量较少时,以“多苗控制分蘖”的群体产量较高;在施肥量较多时,以“少苗促进分蘖”的群体产量较高。本文还从每亩穗数与每穗粒数的关系、叶面积动态以及干物质的积累和分配等方面,进一步分析了上述三种群体结构产量形成过程的特点。关于分蘖的多少对水稻群体发育的影响,也进行了初步的探讨。

Correlation analysis, analysis of covariance and partial regression equation analysis were used to evaluate the data obtained on 197 plots of paddy fields of maximum yield in order to clarify the yield components and the dynamic structures of rice population. The grain yields of these fields in 1978 and 1979 were all higher than 8250 kg/ha per crop. The results were summarized as follows: 1. Results obtained in both hybrids "Shan-you 2" and "Si-you 2" of the first or second crop under the multiple crop...

Correlation analysis, analysis of covariance and partial regression equation analysis were used to evaluate the data obtained on 197 plots of paddy fields of maximum yield in order to clarify the yield components and the dynamic structures of rice population. The grain yields of these fields in 1978 and 1979 were all higher than 8250 kg/ha per crop. The results were summarized as follows: 1. Results obtained in both hybrids "Shan-you 2" and "Si-you 2" of the first or second crop under the multiple crop system indicated that the partial correlaton between the yield and the sum total of grains and between the yield and the percentage of ripe grains was significant. The values of the partial correlaton coefficient between the sum total of grains and the percentage of ripe grains and between the sum total of grains and 1000 grain weight showed negative significance. However, positive correlations between the sum total of grains and total full-grains were highly significant. Therefore, following the increasing of the sum total of grains, both hybrids gave increased yields, although the percentage of ripe grain and the weight of grain appeared somewhat being reduced. 2. The sum total of grains depended upon the number of available panicles multiplied by the basic numbers of grains per paaicle. 3. Significant positive correlation was found between the number of existed basic seedlings and the sum total of grains. In other words, with 15-120 thousand existed basic seedlings, the more the number of basic seedlings existed, the more the effective panicles were obtained and the more the available grain numbers. 4. According to the data obtained in this study, the number of seedlings to tillers and panicles inductive to high yield strcture is in the ratio of 1:3:2. Both hybrids "Shan-you 2" and "Si-you 2" had 20 million and 31 million grainsrespectively, producing 1050 kg. per hectare per crop.

本文用相关分析、协方差分析和偏回归方程分析的方法,分析了福建水稻高产区——龙溪地区1978、1979两年杂交水稻亩产1100斤以上的197块高产田的产量构成因素和群体动态结构,结果如下: 1、汕优2号、四优2号早、晚季都表现产量与总粒数、产量与结实率的偏相关达显著水准。总粒数与结实率、总粒数与千粒重之间成极显著的负偏相关。但总粒数与总实粒数成极显著的正相关,因此,增加总粒数,即使结实率和粒重有所下降仍然增产。 2、增加总粒数是在一定穗粒数的基础上,通过增加有效穗来达到。 3、汕优2号、四优2号的有效穗与总粒数成极显著正相关,基本苗数与有效穗数的关系也非常密切,即亩基本苗在1.5—12万范围内,基本苗愈多,有效穗愈多,总粒数愈多。 4、高产田群体的动态结构是按1:3:2的苗、株、穗比例,亩产1400斤的总粒数为2900万(汕优2号)与3100万(四优2号)。

This paper studied the seedling quality, tillering characteristics, root development, leaf groups and grain development, relationship between leaf-root and yield, yield components, and the dynamic structures of rice population on hybrid rice "Siyou 2", "Shanyou 2", "Shanyou 3"etc. in 1976-1982. Results were summarized as follows: 1. There dominant characters appeared in the hybrid rice, i.e., vigo rous ti1lers, flourishing root systems and larger panicle-spikelets. Seedlings of multiple-tiller...

This paper studied the seedling quality, tillering characteristics, root development, leaf groups and grain development, relationship between leaf-root and yield, yield components, and the dynamic structures of rice population on hybrid rice "Siyou 2", "Shanyou 2", "Shanyou 3"etc. in 1976-1982. Results were summarized as follows: 1. There dominant characters appeared in the hybrid rice, i.e., vigo rous ti1lers, flourishing root systems and larger panicle-spikelets. Seedlings of multiple-tiller laid the foundation of these three preeminment traits. In comparison with single culm, the seedling of multiple tillers excelled in the economic use of manure and seeds, large rooting multiple, greater diameter of culm, higher spikelets per panicle. 2. The negative partial correlation of the hybrids between the modal position of the main stem and the number of ears was significant. The yield of tillering panicle in 2 0 and 3/0 nodes amounted to 49% of the total yield. The correlations were close between tiller growth and carbon nutrition, nitrogen nutrition respectiAely. 3. Hybid rice presented larger panicle and more multiple spikelets than the normal rice varieties, but the percentages of filled grains were less, owing to the decrease of photosynthetic rate after heading. Thus the allotment of nutrinets became less, and more multiples appeared in weakly spikelets per panicle. However, the number of filled grains increased with the full sunlight, optimal temperature, and humidity after heading. The grain filling development was seriouly influenced either by high temperature or low temperature, especially 35 C maximun temperature above or daily temperature below 230 Cc. at bloonmig stage. 4. plants of hybrids "Shan-you 2 "and "Si-you 2 "had culm diameter, volume, dry weight of roots and the density of superficial roots larger than those of normal rice cultivars. However, the hybrid plants showed that the maximum rooting per day at climax were about the time of highest tillering activity. The highest daily sap bleeding coincided with the greatest tiller development. Then some of the tillers died, making the total number of tillers decline. The dry weight of roots increased up to the booting stage. Daily sap bleeding occurred in dough stage as the secondary summit bleeding. Irrigated field plots with water layer at early growth stage, and field maintenance of weteess here-after promoted flourishing root systems. Larger panicles multiple spikelets and higher percentage of filled grains were also induced. 5. From the data obtained in this study, the leaves on the main stem are classified according to their functions under the following four categories. The leaves 1/0-3/0, that emerged at the seedling stage, greatly influenced the quality of seedling. Leaves 4/0-9/0 (10/0) that emerged at the tillering stage, affected the number of tillers and panicles. Leaves 1/0 (11/0)-12/0 (13/0) that emerged at the time of stem elongation affected the internodal dry weight and the number of grains per panicle. Leaves 13/0 (14/0)-15/0(16/0) that emerged at the stage of panicle differentiation influenced the percentage of filled grains and kernel-weight. 6. The index of temperature summation of growth-development on hybrid rice was 36.09 at the panicle initiation stage, 56. 54 in the reduction division stage, and 68.9 in the heading stage. 7. Results of analysis showed that the partial correlation between the yield and the sum total of grains was significant. However, statistical analysis showed that the sum total of grains of both "Shan-you 2 "and "Si-you 2 "hybrids depended upon the numbers of available panicles multiplied by the basic number of grains per panicle. According to the data obtained in this study, we propose that the seedling numbers, tillers, and panicles of the dynamic structure of high yield field fall under the ratio of 1:3:2.

作者系统研究了杂交水稻“四优2号”、“汕优2号”等的秧苗素质、分蘖特性、根系发育、叶组、结实率、叶、根与产量构成因素之间的关系以及高产群体动态结构。并进行生产技术考察、高产验证和推广,普遍获得增产。

 
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