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麦子是多花作物。据观察,大麦早熟3号每穗可分化40个左右的小花,由于在栽培过程中管理不当或因某些条件不够合理而不能满足它的生理需要,导致大部分小花在幼穗分化后期退化,结果每穗粒数只有20粒左右。这是值得研究的问题。这个问题也是麦子高产栽培中增产潜力最大的问题。为了制定合理的栽培管理措施,夺取高产,需要探讨并掌握每穗粒数与剑叶长度、施肥时叶龄及幼穗分化阶段叶色之间的关系。下面我们引用一九七二年至一九七四年试验工作的部分资料加以阐述。
The wheat is more flowering crops. It is observed that about 40 per litter can be differentiated in the barley early maturing stage 3 and most of the flowers degenerate at the late stage of panicle differentiation due to improper management in the cultivation process or some conditions are not reasonable enough to meet its physiological needs. The result is only about 20 grains per spike. This is a question worth studying. This issue is also the issue of yield maximization in wheat high-yielding cultivation. In order to develop reasonable cultivation and management measures to seize high yield, we need to explore and grasp the relationship between grain number per spike and flag leaf length, leaf age at the time of fertilization, and leaf color at the stage of young panicle differentiation. Let us elaborate on some of the experimental work from 1972 to 1974.