密度、N和K对玉米品种隆平206产量和品质的影响及栽培组合优化

Effect of Density,N and K on Yield and Quality for Maize Longpin 206 and its Cultivation Combination Optimization

本文采用二次通用旋转回归设计的方法研究了密度、N和K对玉米产量和品质的影响,并对三个栽培因子进行了组合优化研究.结果表明：玉米产量与3因子成二次回归关系,产量高于10772.83kg/hm2的优化区间为：密度74655～82155株/hm2;施氮量257.9～305.9kg/hm2;施钾量261.3～315.9kg/hm2;蛋白质含量与氮肥的施用量正相关,与钾肥的施用量负相关;淀粉含量与氮肥的施用量负相关,与钾肥的施用量正相关;脂肪含量钾肥的施用量正相关;蛋白质、淀粉、脂肪含量均与密度相关不显著.

Applying the common rotation regression design, effect of density, N and K among maize yield and quality were studied and combination optimization of three cultivation factors was done. The result indicated that quadratic regression was related with three factors, and optimization intervals of the high yield （ more than 10125kg/hm^2） were the planting density 74655 - 82155 plants,amount of N 257.9 -305.9kg/hm^2, K20 261.3 315.9kg/hm^2. The protein content correlated with the amount of nitrogen and potash fertilizer was positive and negative respectively. The starch content correlated with the amount of nitrogen and potash fertilizer was negative and positive respectively. The fat content with the amount of potash fertilizer was positive. The content of protein, starch and fat correlated with density were not significant.