玉米种植密度对产量和品质的影响

玉米不同密度下的子粒产量和品质的测定表明：不同种植密度直接影响了子粒产量和品质。密度与产量的关系为：Y=4142.7Ｘ-318.9X²；较大和较小的密度有利于玉米子拉脱水，使收获时含水量降低。在一定密度范围内，玉米子粒蛋白质、脂肪、淀粉的含量在不同成熟阶段及收获时均呈下降趋势，而超出这一范围，这些物质的含量有所提高。玉米子粒中蛋白质、淀粉及脂肪的低含量与高产密度相对应，但这些物质的高含量却不与较低产量的密度相对应。

Research on High Yield and Good Quality of Maize

The determin of yield and quelity of maize kernels showed that the planting density affected the yield and quality of maize.The relationship of planting density and yield of maize was Y=4142.7X-318.9x²;Large or small planting density was good for maise kermel to dewater and had a relative small percentage of water in kermels at harvest time;In definite extent of planting density,the content of protein ,lipid and starch of maize reduced with the increasing of planting density at different maturity stages and harvest time.Out of the extent,the content of these subsance enhanced.The lower content of protein,lipid and starch corresponded with the density of higher yield,but the high content of protein,lipid and starch did hot correspond with the density of low yield.