整枝据调查，在二代棉铃虫发生期适时整枝一次，可使百株卵量下降40％至60％；在二代棉铃虫发生期去枝叶的棉田，田间卵、虫存量减少3．8％至54．5％，平均为27．7％；在四代棉铃虫高峰期，及时摘除边心、赘芽，可使卵和幼虫的存量分别减少52．5％及58％。抹卵二代棉铃虫卵30％ Pruning According to the survey, in the second generation of cotton bollworm timely pruning once, can reduce the number of eggs from 40 to 60%; in the second generation of cotton bollworm to the branches and leaves of cotton fields, eggs, insect stocks decreased by 3.8% To 54.5% with an average of 27.7%. In the fourth generation of cotton bollworms, timely removal of central and vegetative buds reduced the stocks of eggs and larvae by 52.5% and 58% respectively. Wipe egg second generation cotton bollworm eggs 30%