不同种植密度对玉米产量的影响

The Effects of Different Planting Densities on Maize Yield

为筛选出适合桐梓县玉米的最佳种植密度,设置4个密度梯度,对4种密度下玉米的农艺性状和产量性状进行分析。结果表明,密度为4 500株/667 m~2玉米产量最高,综合性状表现较好,随着密度的增加玉米的产量逐渐降低,且会增加玉米的倒伏率;密度为7 300株/667 m~2时倒伏率100%,倒折率85.3%;密度为6 300株/667 m~2部分倒伏,倒伏率43.8%,倒折率18.3%;密度为5 500株/667 m~2,倒伏率4%,未发生倒折;密度为4 500株/667 m~2未发生倒伏、倒折。

In order to select a reasonable density for corn planting in Tongzi County,four density gradients were set up to analyze the agronomic and yield traits of corn.The results showed that corn with a density of 4500 plants/667m2 had the highest yield and better comprehensive traits.As the density increased,the yield of corn gradually decreased and the lodging rate of corn increased.In this experiment,corn with a density of 7300 plants/667m2 had basic lodging,with a lodging rate of 100%and a lodging rate of 85.3%.Corn with a density of 6300 plants/667m2 had partial lodging,with a lodging rate of 43.8%and a lodging rate of 18.3%.Corn with a density of 5500 plants/667m2 had a lodging rate of 4%and no lodging or lodging occurred.Overall,reasonable and dense planting can effectively increase corn yield.