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研究了不同密度对制种玉米农艺性状和产量的影响,结果表明:不同密度对制种玉米的农艺性状和产量都有显著的影响。在6000~7500株/667m~2的密度范围内,随密度的增加,穗数、穗位高和秃尖长度依次递增;茎粗、穗长、穗粒数、穗行数、行粒数、千粒重呈递减的趋势,在7500株/667m~2的密度下出现空秆。该制种玉米组合在密度7000株/667m~2时制种产量最高,此时各农艺性状表现也最佳。
The effects of different densities on the agronomic characters and yield of maize were studied. The results showed that different densities had significant effects on the agronomic characters and yield of maize. Within the density range from 6,000 to 7,500 plants / 667m ~ 2, the spikes, ear height and baldness increased with the increasing of density. The stem diameter, spike length, number of spikes per panicle, number of spikes per panicle, number of rows per spike, Decreasing trend appears empty stalk at the density of 7500 plants / 667m ~ 2. The hybrid corn seed combination produced the highest seed yield at a density of 7000 plants / 667 m ~ 2, at which time the agronomic traits were also the best.