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摘除老叶是油菜一项十分有效的增产技术。为什么油菜摘老叶好呢?这是因为:①油菜叶片在功能期阶段,光合作用最强,制造的干物质最多,并输送到植株各个部分,使其键壮生长发育;当叶片进入衰老期后,光合效率低,制造的干物质比消耗的还少,需壮龄叶提
Removal of old leaves is a very effective rapeseed production technology. Why rapeseed old leaves is good? This is because: ① rape leaves in the functional phase, the strongest photosynthesis, the highest dry matter, and transported to various parts of the plant, so that the key Zhuang growth and development; when the leaves into the aging period After the photosynthetic efficiency is low, the manufacture of dry matter less than the consumption, need to mention the age of leaves