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1 播前准备抗虫棉宜集中连片种植 ,播前应选择适宜茬口 ,合理间作套种 ,以提高抗性效果。大豆、瓜类、蔬菜等作物也是棉铃虫的寄主 ,为了防止棉铃虫大龄幼虫转移和产生抗性 ,这些作物不宜与抗虫棉间作套种。2 精心培育壮苗2 1 建标准苗床苗床要选择背风向阳、地势高燥、排
1 Preparing for planting insect-resistant cotton should be concentrated contiguous planting, sowing should be selected before sowing, intercropping intercropping reasonable to improve the resistance effect. The crops such as soybean, melon and vegetables are also the host of cotton bollworm. In order to prevent the cotton bollworm from transferring and producing resistance to the older larvae, these crops should not intercrop with the cotton bollworm. 2 carefully nurtured seedlings 2 1 to build a standard seedbed seedbed to choose lee sunny, high terrain, row