入冬后,危害果树的病虫,也随温度的降低而在果树的皮缝、伤疤、枝杈、落叶、落果、僵果或土壤中潜伏下来,进行“越冬”。翌春“惊蛰”后,又随温度的回升而出来活动,危害果树和繁殖后代。由于冬季果树的枝梢已发育成熟,能耐较高浓度的农药,而病虫的栖息场所又较固定,抗性较弱,所以在这段时期进行清园消毒,防治方便简单,效果好。一、清园。果树下的落叶落果、树上僵果、园中和四周杂草,是病虫栖息越冬的寄主。必须彻底清除干净、集中烧毁或挖坑深埋,以减少翌年的病原和虫原。二、剪除病虫枝。利用冬剪机会,将病虫枝剪除,并集中烧毁。如虫蛀较深而该枝又必须保留 After winter, the pests that endanger the fruit trees also lurk in the crevices, scars, twigs, deciduous leaves, deciduous fruits, or the frozen fruits or soil of the trees as the temperature decreases. The following spring “Jingzhe ”, but also with the temperature rise out of activities, endangering fruit trees and breeding offspring. Because the branch of winter fruit tree has matured, can tolerate higher concentrations of pesticides, and habitat of pests and insects than the fixed, weak resistance, so in this period for Park disinfection, prevention and control is simple and effective. First, the Qing Park. Fallen fruit under the deciduous trees, trees, fruit trees in the garden and the surrounding weeds, pests and parasites overwintering host. Must be thoroughly cleaned, concentrated burial or digging deep buried to reduce the following year’s pathogen and bug. Second, cut off pest branches. The use of winter cutting opportunities, the worm cut off branches, and focus on burning. If the worm is deep and the branch must be preserved