棉盲椿在棉花子叶期和真叶期危害能造成无头苗、多头苗和大量破叶;在蕾期危害嫩头,造成破头疯长,并直接危害幼蕾造成大量脱落;在铃期危害幼铃,形成僵铃和畸形铃,产量明显降低。三年来根据棉盲椿发 Cotton seedling stage and true leaf damage in cotton leaves can cause non-head seedlings, multi-head seedlings and a large number of broken leaves; endanger the tenderness in the bud period, resulting in broken head soaring, and directly endanger the young bud caused a lot of shedding; in the bell damage Young bell, the formation of ring bell and deformed bell, yield was significantly reduced. Three years according to cotton blind Chun hair