连阴雨、低温及雾霾等恶劣天气对冬季农业生产,尤其是大棚蔬菜正常生长造成不利影响,极易诱发蔬菜病虫害。菜农防治病虫害时要注意以下几点:合理选用农药要注意选用受温度影响较小的农药,一般情况下,胃毒剂和触杀剂受温度的影响小些,内吸剂和熏蒸剂受温度的影响大些。如敌杀死、敌敌畏 Incidental rain, low temperature and haze and other adverse weather adversely affect the winter agricultural production, especially the normal growth of greenhouse vegetables, which can easily induce vegetable pests and diseases. Vegetable farmers to control pests and diseases should pay attention to the following points: The rational use of pesticides should pay attention to the selection of less affected by the temperature of pesticides, under normal circumstances, stomach poison and touch agent affected by the temperature smaller, endosupers and fumigants affected by temperature bigger. If the enemy killed, dichlorvos