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棉黑蚜(Aphis atrata Zhang)是新疆棉花苗期害虫。在石河子地区,一般5月下旬开始有少量有翅蚜向棉田迁飞,6月上、中旬大量有翅蚜迁飞到棉田,6月中、下旬之交虫口数量达到高峰。之后,随6月下旬气温升高虫的数量而消减。1983年6月底至7月上旬,因气温上升缓慢,则适于该虫繁殖,所以在棉田的危害期长,而且发生数量大,严重影响棉苗生长。现将发生危害情况及化学防治后的增产效益的测定分述如下,以供参考。
Aphis atrata Zhang is a cotton seedling pest in Xinjiang. In the Shihezi region, a small amount of winged aphids began to migrate to the cotton fields in late May. In the middle and early June, a large number of winged aphids migrated to the cotton fields, reaching a peak in mid- and late June. Afterwards, it decreased with the increase of temperature in late June. The end of June 1983 to early July, due to the slow temperature rise, it is suitable for breeding insects, so the damage in the cotton long period, and the occurrence of a large number, seriously affecting the growth of cotton seedlings. Now the occurrence of hazardous and chemical control of the yield increase after the determination of the following, for reference.