即物体的实际重力，它不随物体运动状态变化而变化的．
茶芽饱满重实，香高味爽。
水稻产量作为主要的育种目标性状，直接受到每穗实粒数、千粒重和单株有效分蘖数等产量构成因子的影响。
Yield as a major breeding objective in rice, is directly influenced by the yield-component traits including the number of productive tillers per plant, grains per panicle and 1000-grain weight.
结果表明：积水对夏玉米密度、绿叶数、果穗长、果穗粗和实产的影响较明显，而对发育期出现早晚和百粒重的影响不明显。
The results showed that flood had obvious impacts on the maize density, maize greenery, ear lengthen and thick, and the yields, but not on the development process and one hundred grains weight.
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