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在谷子产量形成过程中,单位面积成粒数是活跃的因素。单位面积成粒数受穗数和穗粒数制约。在低产水平下,增加穗数(密度)能显著地提高单位面积成粒数而增加产量;在高产水平下,也就是密度达到一定程度,单位面积成粒数主要决定于穗粒数的变化。穗粒数与其分化的小花数和结实率密切相关。我们从1962年以来,观察了谷子结实的一般规律,子粒灌浆的主要特点,以及营养条件与结实的关系。
Grain yield per unit area is an active factor during millet production. Granules per unit area by the number of spikes and grain number constraints. At the low yield level, increasing the number of spikes (density) could significantly increase the number of grains per unit area and increase the yield. At high yield level, the density reached a certain level. The number of grains per unit area was mainly determined by the change of grains per spike. The number of grains per spike was closely related to the number of florets and seed setting rate. Since 1962, we have observed the general rules of millet robustness, the main features of grain filling, and the relationship between nutritional conditions and firmness.