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在某些栽培条件下,玉米果穗会出现败育的籽粒,特别是在穗上部。在这些发育不全的果穗(秃尖长短不一)上,籽粒体积表现出逐渐地或突然地缩小,因此果穗顶:部出现败育籽粒(瘪粒)。据 Hanft(1986)报道,籽粒败育12.4%可导致产量下降6%。计算结果表明在瑞士高密度种植下的玉米如果果穗的秃尖长度达10%,籽粒产量将下降42%,茎秆产量将下
Under some cultivation conditions, maize ears will appear aborted grains, especially in the upper part of the panicle. In these undergrown ears (bald length), the grain volume showed a gradual or sudden decrease in size, resulting in aborted grains (shriveled grains) in the top of the crop. According to Hanft (1986), 12.4% of grain abortion results in a 6% drop in production. The results show that in Switzerland, planting corn under high density if the ear spike tip length of 10%, grain yield will drop 42%, stem yield will be