Hello, botrytis cinerea mostly occurs in the environment with poor air permeability, low temperature, high humidity and weak branches and vines. thiram and iprodione are used for road protection. Treatment of botrytis cinerea and control of thiram and iprodione. Treat with pyrimethanil, diethofencarb, cyprodinil, cycloserine, carbendazim, Trichoderma, etc. It is best to prevent downy mildew with copper preparations, such as Bordeaux solution and cuprous oxide. Use dimethomorph, flumorph, metalaxyl, phosphoryl fluoride, cyazofamid, mancozeb, propineb, etc. Black pox is a disease with low temperature and high humidity, and its prevalence is related to rainfall, humidity and plant tenderness. It can be controlled by fluorosilicone, carbendazim, diniconazole, trifloxystrobin, tebuconazole, azoxystrobin and thiophanate-methyl. Anthracnose is a disease with high humidity and high temperature. It is controlled by methoxyacrylate, thiram, prochloraz, bromothalonil, difenoconazole, kresoxim-methyl, Nong Kang 120, diniconazole and tebuconazole in turn. Personal views are for reference only.