摘要： 采用多因子试验设计研究了对白粉病，麦蚜抗性模式不同的小麦品种混植和播种密度、施氮肥量、粉锈宁用量、抗蚜威用量对小麦白粉病、麦蚜及产量的影响。结果表明，品种混植对三个目标函数有显著或极显著的效应。一次项回归系数分别为0.93，—790，17.39。对白粉病的效应高于播种密度，对麦蚜和产量的效应高于供试的所有其它显著因子。

关键词: 小麦, 品种混植, 白粉病, 麦蚜, 产量

Abstract: Effects of cultivar mixtures of wheat, crop density, amount of N-fertilizer,dose of triadimefon and pirimicarb on disease index of powdery mildew, number of Aphids on percent of plants and yields of wheat were evaluated respectively by using multifactor design.The results showed that cultivar mixtures had significant effects on the above three target functions.Effect of cultivar mixture on disease index of powdery mildew is more than that of crop density, and more than those of all other significant factors on both number of Aphids and yields of wheat.

Key words: Wheat, Cultivar mixtures, Powdery mildew, Aphids, Yield

中图分类号: 

• S435.12