飞机超低容量喷洒溴氰菊酯和杀灭菊酯防治马尾松毛虫,具有速度快、效果好、对天敌杀伤小、省劳力、节成本、污染小的优点。而飞机喷药时药滴在空中沉降过程中的蒸发消耗是影响防治效果的一个重要因素,相对湿度又是影响蒸发的重要因子。为探讨相对湿度对飞机超低容量喷雾防治效果影响 Ultra-low-capacity aircraft spraying deltamethrin and fenvalerate control Masson pine caterpillar, with fast, effective, small damage to natural enemies, labor-saving, cost savings, the advantages of small pollution. When the medicine is sprayed on the plane, the evaporation consumption of the medicine drop in the air settling is an important factor that affects the prevention and control effect, and the relative humidity is also an important factor that affects the evaporation. In order to investigate the effect of relative humidity on the control effect of ultra-low capacity aerosol spray