夏季随着温度升高湿度加大,容易造成果树病虫害的流行和泛滥。为了有效地控制果树病虫害的爆发,减轻和减少病虫危害,应抓好以下两点:一、关键时期1.发生初期一般果树病虫害的发生分为初发、盛发、末发3 Summer with the temperature increased humidity, easily lead to the prevalence and flooding of pests and diseases of fruit trees. In order to effectively control the outbreak of pests and diseases in pests of fruit trees and mitigate and reduce the pest and disease hazards, we should pay attention to the following two points: 1. The critical period 1. The initial occurrence of pests and diseases of common fruit trees is divided into initial onset,