High temperature in summer, heavy rain, high humidity, repeated years of heavy sputum, excessive density, and excessive application of nitrogen fertilizer can cause the occurrence and prevalence of the disease. In the seedling stage, the disease is caused by the lack of plants, and the dark spots of the leaves occur in the adult stage. As a result, the disease causes the fruit to rot, and the prevention and treatment will cause serious losses to the vegetable farmers. Therefore, it is necessary to prevent early and early treatment of brown streak disease. The prevention methods are as follows: When planting, use 50% carbendazim wettable powder 10g per square meter, 50% Fumei double wettable powder 10g, mix and mix 2kg of fine soil to make the soil, take 1/3 sprinkle on the surface of the loquat, The remaining soil is then covered on the seed. In the seedling stage, 50% captan 400 times solution or 60% fumei zinc 500 times solution can be sprayed. After planting, it can be sterilized by planting ash or lime powder at the base of the stem. In the result period, 40% Fuxing 5000-6000 times liquid, or 80% Xinwansheng wet powder 500-800 times liquid can be sprayed, sprayed once every 7-10 days, and even sprayed 2~3 times. In order to prevent drug resistance, the above pesticides can be used interchangeably. More pesticide knowledge , please pay attention to China Pesticide Network Plastic Profiles,Custom Made Plastic Molds,Variety Material Plastic Parts,Injection Molded Plastic Parts Ningbo Yongsheng Rubber And Plastic Products Co., Ltd. , https://www.yscnrubber.com