加强桃小食心虫的预测预报工作,准确掌握该虫的发生时期及发生数量,以便指导桃小食心虫的防治工作,尽可能地把害虫消灭在为害之前。其具体预测预报方法如下。 Peach small insects to strengthen the prediction and forecasting work accurately grasp the occurrence of the pest and the number of occurrence in order to guide peach prevention and control of pest insects, pests as far as possible before the destruction. The specific forecasting method is as follows.