种植密度和品种对玉米产量和品质的影响

以奥玉3101和强盛49号为试验材料,研究了4个不同种植密度对其产量和品质的影响。结果表明,不同品种、密度及其品种和密度互作间产量差异均达显著水平;种植密度与产量呈二次抛物线性关系,强盛49号密度为42650株/hm2时产量最高,奥玉3101密度为53745株/hm2时产量最高;品种、密度以及品种和密度互作对2个玉米品种的蛋白质和赖氨酸含量的差异影响均达显著水平,而对脂肪和淀粉含量的差异影响均不显著;在密度为2.4万~3.6万株/hm2的范围内,随着密度的增加,2个品种的蛋白质和赖氨酸含量都呈上升趋势,在3.6万株/hm2时达到最大值。

Influence of Planting Density and Variety to Yield and Quality in Maize

Two maize varieties Aoyu 3101 and Qiangsheng 49 were planted under 4 densities to study their responses to yield and quality of maize. The results showed that： （ 1 ） the effects of varieties, densities and variety to density interactions to yield were significant. The relation between yield and density was quadric parabola equation. The yield of Qiangsheng 49 was the highest under 42 650 plants/bin2 and Aoyu 3101 under 53 745 plants/hm2. （2）tbe difference in protein and lysine content was significant between varieties, densities and variety to density interactions, while the difference in fat and starch content was not so significant. The protein and lysine content of two maize varieties were increased under density range from 24 000-36 000 plants/hm2, and the protein and lysine content were the highest under 36 000 plants/hm2.