水稻产量是由有效穗数、每穗实粒数和千粒重构成。
The rice yield is composed of panicles, the filled grains per panicle and the weight of 1000 filled grains.
本研究结果表明，在较高的产量水平下，增加每穗粒数和千粒重是增产的方向。
The results suggested that the way to increase yield in the area with higher production level was to improve grain number of ear and grain weight.
在保持现有组合的千粒重的基础上，增加每穗实粒数是提高早杂组合产量的有效途径。
On the basis of maintaining 1000-grain weight of the present combinations, increasing filled grains per panicle was an effective approach to elevating the yield of hybrid early rice.
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