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1979—1981年对亩产千斤和500斤(对照)的小麦各个蘗位幼穗发育的进程及小花分化等,进行了观察研究,结果表明:(1)千斤田与对照相比,幼穗发育进程有很大差异;(2)分蘖穗分化各个时期与主茎一样,可用植株外部形态进行诊断;(3)从幼穗发育角度看,提高分蘗成穗率的关键在于缩小分蘖与主茎穗发育各个时期的差距,尽早达到同步。同时各个发育时期与主茎应始终保持一个稳定的叶龄差;(4)千斤栽培条件下可以缩小中位小花与下位小花的发育差距,有利于结实粒数的提高.作者还对分蘖利用和分蘖成穗的互补现象,无效分蘖的消亡过程等问题提出了看法。
From 1979 to 1981, we observed the process of panicle development and floret differentiation at each tillering stage, and the results showed that: (1) Compared with the control, panicle development (2) The tillering panicle differentiation at all stages, like the main stem, can be diagnosed by the external morphology of the plant. (3) From the perspective of young panicle development, the key to increase the tillering rate is to reduce the tillering and tillering of the main stem Development of the gap between the various periods, as soon as possible to achieve synchronization. At the same time, the main leaf stalks should maintain a stable leaf age at all developmental stages. (4) Under the condition of jacking cultivation, the developmental gap between the median and the lower florets can be reduced, The phenomenon of complementation of tillering into ear, the demise of ineffective tillers and so on.