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本文从大、中、小不同群体出发,初步研究了玉米群体的自动调节与干物质生产、干物质分配和产量形成的关系。研究结果表明,玉米群体也存在较强的自动调节作用。群体在叶面积上的自动调节能力较弱,而在干物质生产上的自动调节能力则很强。提高比叶重和叶绿素含量有利于增加干物质生产。群体的自动调节作用对生殖器官的影响大于对营养器官的影响。只有努力克服群体的自动调节对产量形成的不利影响,才能实现进一步高产。由于粒重的损失得不到其他产量构成因素的补偿,因此,对增加粒重必须给予足够的重视。
In this paper, starting from the different groups of large, medium and small, preliminary study of the corn population auto-regulation and dry matter production, dry matter distribution and yield formation. The results show that there are also strong self-regulation of corn populations. Groups are less able to automatically regulate leaf area and have a strong ability to automatically regulate dry matter production. Increasing specific leaf weight and chlorophyll content is good for increasing dry matter production. The group’s autoregulation has a greater effect on the reproductive organs than on the vegetative organs. Only by working hard to overcome the adverse effects of the automatic adjustment of the population on the formation of production can we achieve further high yields. Because grain weight loss is not compensated by other yield components, sufficient attention must be paid to increasing grain weight.