There are many factors affecting grain yield of maize.
影响玉米子粒产量的因素很多。
Nitrogen fertilization increased grain yield significantly.
施氮后籽粒产量极显著增加。
The amount of root did not directly influence the grain yield.
但根量的多少并不直接影响产量。
The applied amount of nitrogen had a significant effect on grain yield.
施氮量对杂交稻的产量形成和氮肥利用的影响十分明显。
The LCT is the optimum leaf color at which maximum grain yield is achieved.
叶色诊断指标实际上就是稻谷产量最高时的最适叶色。
Intercropping is the most potential for increasing grain yield in arid regions.
间作多熟种植是干旱地区最具增产潜力的栽培模式。
Some measures have been pointed for the increase of grain yield and quality of wheat.
同时还提出了根外施用微肥来提高产量、改善籽粒品质的具体措施。
This brought a steady rise in the grain yield. In 1957 it nearly doubled that for 1949.
这使粮食产量不断增长，到1957年产量已经比1949年翻了一番。
Grain yield map is the important means for analyzing and managing data of yield monitor system.
谷物产量图生成系统是谷物测产系统中产量数据分析和处理的重要手段和工具。
The agricultural and physiological efficiencies of grain yield were maximum in calcareous purple soil.
对小麦籽粒产量的农业和生理效率以石灰性紫色土为最高。
Grain yield showed significant positive correlation with ears per plant (EPP) under stress conditions.
在胁迫条件下，产量与每株穗数呈极显著正相关。
The grain yield and protein content responded differently to the ratio of base to topdressing nitrogen.
籽粒产量和蛋白质含量对底追比例的反应有一定差异。
Rates of grain yield advances through plant breeding programs have apparently declined in recent years.
近年来，主要农作物的产量增加速率明显下降。
Effects of nitrogen rates on grain yield and quality of wheat in different soil fertility were studied.
在高、低两种肥力土壤下，研究了施氮量对小麦子粒产量和综合品质性状的影响。
Our country is characterized by large population, insufficient cultivated area, lower per capita grain yield.
我国是一个人口众多，耕地面积不足，人均粮食产量较低的国家。
Temperature within extremely low and high levels, affected spikelet formation, ripening, and final grain yield.
极低、高范围内的温度影响小穗生成、熟和最终籽粒产量。
Therefore, the study of the FAO food price changes means of production and grain yield of positive significance.
因此，研究粮食生产资料价格变动对粮农收益及种粮积极性的影响具有重要意义。
Owing to a lot of uncertain factors influencing the grain yield, its prediction has always been a difficult point.
粮食产量受到多个不确定因素的影响，它的预测历来是一个难点。
Effects of different nitrogen application amount and regimes on the grain yield and quality of wheat were studied.
研究分析了氮素施量和不同运筹方式对优质小麦与普通小麦籽粒产量和品质的影响。
Results showed that the seeding date had a strong effect on the grain yield and yield components in this experiment.
结果表果：播期对夏播小麦的籽粒产量和产量构成因素具有强烈的影响。
In SRI condition, transplant of different leaf age (from 2 to 5 leaf age) seedlings has very small effect on grain yield.
在强化栽培条件下，不同叶龄(2—5叶龄)的秧苗移栽对其产量的影响很小。
Finally, some policies were provided in order to accelerate grain yield and optimize spatial structure of grain production.
最后提出了促进粮食生产稳定增长，优化其空间结构的政策建议。
With the increase of wheat ploidies, nutrient use efficiency for biomass and that for grain yield all increased significantly.
随小麦的进化，生物量养分利用效率和产量养分利用效率均显著增加。
The effects of different nitrogen and phosphorus application on grain yield and qualities of compact corn Jidan 209 were studied.
以耐密型玉米品种“吉单209”为试材，研究了不同氮、磷用量对玉米籽粒产量和营养品质的影响。
Effects of different nitrogen application amount on grain yield and quality of wheat variety-Wanmai 44 (middle gluten) were studied.
研究分析了氮素施量对优质中筋小麦皖麦44籽粒产量和品质的影响。
The correlation and path action among economic characters to grain yield for 11 mainly promoted hybrid rice in Guangdong were analyzed .
本文研究了11个广东省主推杂交水稻组合主要经济性状间的相互关系及其对产量的通径作用。
The correlation and path action among economic characters to grain yield for 11 mainly promoted hybrid rice in Guangdong were analyzed .
本文研究了11个广东省主推杂交水稻组合主要经济性状间的相互关系及其对产量的通径作用。
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