The effect of density on the protein content and grain yield is on a negative correlation.

密度对籽粒蛋白质含量的影响与其籽粒产量的变化呈负相关关系.

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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.

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Activated oxygen metabolism may be responsible for the relationship between canopy temperature and grain yield.

活性氧代谢可能是冠层温度与籽粒产量显著相关的重要生理原因之一.

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Temperature within extremely low and high levels, affected spikelet formation, ripening, and final grain yield.

极低、极高范围内的温度影响小穗生成 、 成熟和最终籽粒产量.

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Correlation analysis revealed that flag leave angle increased grain yield by increasing spikelet fertility.

相关性分析表明,较小的剑叶角度可通过提高结实率进而显著增加产量.

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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.

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