本文应用最优分割法研究了成都桃园昆虫群落的季节演变格局和规律,将桃园昆虫群落年季节变化分割成3～5月、6～7月、8～9月和10～11月4个阶段,并结合气候及物候变化,讨论了各阶段内主要害虫、天敌的发生特点和治理策略。 In this paper, the seasonal evolution pattern and law of insect communities in Taoyuan, Chengdu were studied by using the optimal segmentation method. The seasonal variation of insect community in Taoyuan was divided into 4 stages (March to May, June to July, August to September and October to November) , And combined with climate and phenological changes, discussed the main pests and natural enemies in each stage of the occurrence characteristics and governance strategies.