利用祁东县植保植检站积累的数据 ,结合模糊数学 ,建立经济和生态效益的模糊隶属函数。并应用模糊最优化原理(Fuzzy) ,提出了棉蚜最优生防指标和模糊决策模型。结果表明 ,在经济效益和生态效益并重时 ,最优化棉蚜生防指标即瓢蚜比为1∶12 1,在偏重经济或生态效益时 ,瓢蚜比分别为 1∶10 2与 1∶14 8,这三个指标与推广应用的指标基本一致 Based on the accumulated data of plant protection and plant protection stations in Qidong County and fuzzy mathematics, a fuzzy membership function of economic and ecological benefits is established. The optimal biocontrol index and fuzzy decision-making model of cotton aphid were proposed by applying fuzzy optimization principle (Fuzzy). The results showed that when the economic benefit and the ecological benefit were both equal, the optimal aphid control index was 1:12 1, and the economic value or ecological benefit was 1: 102 and 1:14 8, the three indicators and promote the use of the same indicators