First, the symptoms The disease mainly consists of the "necrosis type" in the result stage. The veins of the damaged plants are brown or black necrotic. The leaf stalks and fruit stalks extend to the lateral branches, main stems and growth points, and systemic necrotic streaks appear, and the vascular bundles become brown. It causes defoliation, falling flowers, and fruit drop. In severe cases, the shoots, growth points and even the whole plant die, and the upper part of the plant is "fired", which is an important feature of the disease. Second, the law of incidence When high temperature and drought, a large amount of mites occur, the plant disease resistance declines in the late rainy weather; the stagnation of the plant for many years, low-lying land, lack of fertilizer or application of unfertilized farmyard manure, planted too thin, can aggravate the harm of the virus on sweet pepper. Third, prevention and treatment methods Agricultural control The Akita flooded the water and degraded the virus and disease virus in the soil. The film is mulched and ridged, and the base fertilizer is applied. The seedling stage is strengthened by cultivating, and the fruiting result is increased after the flowering result. Intercropping with gramineous high-stalk crops has the effect of preventing the migration of mites and preventing the spread of viruses. 2. Chemical control Spraying growth regulators or chemical agents at the beginning of the disease can control the development of the disease, such as gibberellin 20 mg / kg or potassium permanganate 1000 times. Spraying 0.1% zinc sulphate solution during the fruiting period has a certain anti-disease effect. In the early stage of the disease, the virus is sprayed 2 to 3 times with the virus A800 to 1000 times, and sprayed once every 5 to 7 days. Use drugs to prevent mites and prevent viruses transmitted by mites. Hericium Erinaceus Extract,Lion'S Mane Mushroom Extract,Mushroom Powder,Lions Mane Mushroom Powder Shaanxi Zhongyi Kangjian Biotechnology Co.,Ltd , https://www.zyplantextract.com