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抽穗后水稻不同叶位叶对产量的作用可分二方面:1.贮藏作用将前阶段积累在叶中的养料,在种子形成时期运向穗部。据田中氏报告,剑叶及下2,3,4叶的干物移动率(死亡叶干物重/叶最高干物重)超过30％。2.光合作用据殷宏章先生报告,穗部干物质2/3来自抽穗后的同化作用,所以抽穗后同化作用的强弱对产量的影响很大。不同叶位叶这二作用的比例不是完全
After heading, the effect of different leaf position leaves on yield can be divided into two aspects: 1. Storage effect The nutrients accumulated in the leaves in the previous stage are transported to the ear during the seed formation period. According to Tanaka’s report, the rate of dry matter movement (dead leaf dry matter weight / leaf dry matter weight) of the flag leaves and the lower 2,3,4 leaves exceeded 30%. 2. Photosynthesis According to Mr. Yin Hongzhang reported ear panicle 2/3 from the assimilation after heading, so the effect of assimilation after heading a great impact on the yield. Different leaves of the role of these two roles is not complete