在棉花定苗时,要把搁掉的棉苗带出田外深埋或沤肥,以免其上的棉蚜再爬回留下的棉株上继续为害。这已被视为一项常规治蚜技术措施,多年来在实行中。经笔者在1978、1980和1988年有目的的调查和观察,发现定苗时被间掉棉苗上的蚜虫,基本上不能再返回棉苗为害。现将调查结果报告如下。 In the cotton Dingmiao, take the cotton seedlings should be taken out of the field or buried deep fat, in order to avoid the cotton aphid and then climbed back to stay on the cotton plant to continue to cause harm. This has been considered as a conventional technical measure for controlling aphids, which has been in operation for many years. After the author in 1978, 1980 and 1988 purposeful investigation and observation, found that Ding Miao was out when the aphids on cotton seedlings, basically can not return to cotton seedling damage. The survey results are reported below.