Pepper Virus Disease and Prevention and Control of Tea Camel

First, the difference between the two is to harm the young parts of the plant, so that the leaves become smaller deformed, brown leaves, plant dwarf, etc., serious when fallen leaves, fallen flowers, fruit drop and so on. In the early stage of virus disease, the leaf veins of the heart regress from green, gradually turning into leaf shrinkage. Afterwards, the diseased leaves are thickened, and the edge of leaf curls to the front to form a buckle. The damage of the yellow tea leaves is that the entire leaf chlorosis and the leaf edge curls to the back. Under the bucket. When the virus disease harmed the fruit, dark green and light green spots and verrucous ridges appeared. When the tea radix threatened the fruit, the surface of the pedicel and stalk was grey to gray brown and lost its luster. It was corked and hardened. Virus disease damages the main veins of leaves with brown or black necrosis and gradually spreads to the lateral branches, main stems and growing points, and the hazard of the ocheriferous leaves is that any part on the back of the leaves may be grayish brown or brownish and have oily luster.

Second, the prevention and treatment of viral diseases: 1 selection of disease-resistant varieties, such as Zhongjiao No. 2, Jinjiao No. 3, No. 1 No. 2 Shenjiao, No. 1 No. 1 sweet pepper. 2 seed disinfection. Soaking with 10% sodium phosphate solution for 20 minutes, washing with water and soaking and germination. 3 cultivation management. The use of plastic film covering cultivation, so that early colonization, early results. 4 chemical control. Spray 20% of virus A wettable powder 500 times, 50% of bacteria clear 200 times, bacteria, grams of poison 200 grams of liquid and so on. Spray once every 10 days at the seedling stage or after planting, and control 3-4 times in a row. Tea-yellow glutinous rice: (1) Clear the weeds in the field at the edge of the field and the litter in the fields, level the land, and destroy the overwintering sites to eliminate overwhelming insect sources. (2) It was found that the occurrence of this disease should be immediately controlled by the chemical. It can be used 15% fluorenone EC 300 times, 34% locust ricin EC 2000-2500 times, 48% LST 1000 times, 1.8% Ji Insect moth, 1.8% avermectin (Zizao, Xinke, etc.) 3000 times solution, 15% Qiaoling EC 1500 times solution, 73% Ketel EC 2000 times solution, 15% broom NET 2000 times Liquid, 35% killing special emulsion oil 1000 times liquid and other agents for prevention and treatment. When spraying, focus on the young part of the upper part of the plant. For the production of pollution-free vegetables, dicofol cannot be used for controlling aphids.

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