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在1977年的春小麦百亩高产试验中,我们测得高产田千粒重明显低于一般田,以后几年的试验无一例外。为了查明高产田粒重下降的原因并探索提高它的途径,我们从1978年起连续三年研究了春小麦籽粒的发育进程及其与栽培条件的关系,现整理于下。 一、春小麦籽粒的发育进程 1.籽粒发育的阶段性 小麦从开花到成熟,共经历三个时期:(1)籽粒形成期(开花—坐脐),此期是籽
In the spring wheat yield test of 1977, we measured that the 1000-grain weight of the high-yielding field was significantly lower than that of the general field, with no exception in the later years. In order to find out the causes of heavy grain weight decline and explore ways to improve it, we studied the development of spring wheat grain and its relationship with the cultivation conditions for three years in succession from 1978, and are summarized as follows. First, the spring wheat grain development process 1. Stages of wheat grain development from flowering to maturity, a total of three periods: (1) the formation of the grain (flowering - sit umbilical), this period is the seed