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进入夏季,为了有效地控制果树病虫害的爆发,减轻和减少病虫危害,夏季果树病虫害防治应抓住以下几点:一、防治的关键时期1.病虫发生初期防治一般果树病虫害的发生分为初发、盛发、末发三个阶段。病害应在初发阶段或发病中心尚未蔓延流行之前进行防治;虫害应在发生量小、尚未开始大量取食危害之前防治,这样就可以把病虫控制在初发阶段。2.病虫生命活动最弱期防治
In summer, in order to effectively control the outbreak of pests and diseases in pests of fruit trees and to reduce and reduce the pests and diseases, pest and disease control in fruit trees in summer should seize the following points: 1. The key period of prevention and control 1. The prevention and control of pests and diseases in the early stage General pests and diseases of pests are divided into Initial, Shengfa, the end of the three stages. Diseases should be controlled before the onset or onset of the epidemic; pests should be controlled before they occur in large numbers and before they have been given a large number of feeding hazards so that they can be controlled early in the season. 2. pest insects the weakest control of life activities