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针对关中地区杨树食叶蛾类的群体危害特征,引用模糊分析方法进行了防治适期的评估尝试。结果表明,从群落角度出发,在陕西的关中地区防治杨树食叶蛾类的最适期为下旬/5月～中旬/6月及下旬/7月～中旬/8月。
Aiming at the population damage characteristics of poplar leaf moth in Guanzhong area, a fuzzy evaluation method was used to evaluate the suitable period of prevention and control. The results showed that the optimum period for controlling poplar moths in the Guanzhong area of Shaanxi Province was from the end of May to mid-June / June and from July to mid-August / August from the community point of view.