严冬,保护地蔬菜病虫害发生重、防治难,特别是病害,往往因控制不住危害而影响蔬菜的品质和产量,使菜农的经济效益受到严重影响。利用烟雾剂防治保护地蔬菜病虫害,由于其无需加水,不会增加棚室的相对湿度而逐渐被菜农所接受,但有的棚室因使用方法欠妥,达不到预期目的。为进一步提高保护地蔬菜病虫害的防治水平,现就有关使用技术做如下说明: Severe winter, vegetable pests and diseases in protected areas occur heavy, prevention and treatment is difficult, especially disease, often because of uncontrollable harm and affect the quality and yield of vegetables, the economic benefits of vegetable farmers have been seriously affected. The use of aerosol pesticide to prevent and control vegetable pests and diseases, because they do not need to add water, will not increase the relative humidity of the greenhouse and gradually accepted by vegetable growers, but some greenhouses due to improper use, can not achieve the desired purpose. In order to further enhance the prevention and control of pests and diseases of vegetables in protected areas, we hereby give the following explanation on the use of technologies: