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四、各叶位叶与个体的生育阶段各片叶以活动中心叶作为生理机能的中心而完成各自的机能这一点已经明确,现在更进一步从个体生育过程的观点,来探讨这些叶被统一成为个体的状态。为了明了主稈各叶位叶在个体生育期中氮的累积和输出的情况,以各片叶的含氮量达到最大时的值作为100,计算出各该叶在各个生育时期的含氮量的相对值,结果如图8。
Fourth, the leaves of leaves and individual fertility stages Each leaf to the center of activity leaves as the center of physiological functions to complete their function this point has been clear, and now from the point of view of individual fertility process to explore these leaves are unified into Individual status. In order to understand the accumulation and output of nitrogen in the individual growth stages of the leaves of main stalk, taking the value of N as the maximum value of each leaf as 100, the nitrogen content of each leaf in each growth period was calculated The relative value, the result is shown in Figure 8.