【摘要】 以中熟粳稻滇超 2号为材料 ,研究抽穗前期剪去茎上部功能叶和剑叶对水稻结实和千粒重的影响 ,而影响较大的是剑叶、其次是倒 2叶、再次是倒 3叶 ,同时剪去茎上部三片叶、对产量的影响约占 5 7% ,即水稻上部三片叶可控制约 75 %的经济产量更多还原

【Abstract】 By using mid-mature Dianchao 2 as the material, the effect of cutting off its upper functional leaves and sheath leaf in its eary heading stage on its thousand-grain weight and setting rate was studied. The results showed: the sheath leaf had the greatest offect, the following were the second and the third leaves (from top to bottom). Cutting off the three upper leaves simultaneously affected the yield by 57%. That is to say the three upper leaves control the economic output of rice by 75%.更多还原