1.选择最佳的防治时期最佳时期是越冬成虫和1代成虫盛发期,即1、2代幼虫孵化期,此期害虫抵抗力弱,活动范围小,较为集中,十分便于防治。如果等到潜伏类害虫钻入叶片和果肉内或世代重叠的时候才用药,就很难达到理想的防效。2.用药前的准备先将瓶内药液充分摇匀,用少量的水将其稀 1. The best time to choose the best control period is the overwintering adult and the first generation of adult flourishing period, that is, the first and second generation larvae hatching period, this period of pest resistance, activity range is small, more concentrated, very easy to control. If you wait until the latent pest into the leaves and flesh or generations of overlapping medication before, it is difficult to achieve the desired effect. 2. Preparation before medication Shake the bottle liquid first, dilute it with a small amount of water