Cotton is a traditional economic crop in Dongguang County, and its annual planting area is about 300,000 mu. Because it is an old cotton area, continuous cropping all year round, very few fallacies, serious pests and diseases, which have a great impact on the further improvement of cotton quality and yield, so it is very important to do a good job of prevention and control of cotton pests before sowing, and we must take a variety of measures to prevent Based on comprehensive prevention and control, we can effectively prevent and control the occurrence of pests and diseases. 1. Clean cotton fields. For lands with continuous cropping and serious cotton diseases, remove the dead leaves and waste agricultural film in the fields as soon as possible, and bring them out of the field for centralized treatment to reduce the source of bacteria. Areas where conditions permit promote ploughing before the winter, drying the soil, not only can store precipitation, but also to kill part of the overwhelming bacteria, pests, reduce the pressure of prevention in the coming year. 2. Soil agent treatment. For soils with severe disease, carbendazim or pentachloronitrobenzene can be used for soil treatment. For land plots with severe underground pests, 50% phoxim mixed wheat bran can be used to treat the cotton bait. 3. Select pest-resistant cotton species. The selection of high-yield and disease-resistant varieties is an effective way to control diseases. Stone anti-126 and Zhongmian 45 can be used to coat transgenic insect-resistant cotton. The use of self-retained species should pay attention: must be velvet after the use of carbendazim, quintozene and other fungicides seed dressing, 40% of the ratio of chloronitrobenzene powder for drug ratio 1:100. 4. Balanced fertilization. Nitrogen, phosphorus and potassium should be used at a reasonable ratio. Never use excessive nitrogen fertilizer. Reapply organic fertilizer, increase potassium fertilizer, and combine with trace fertilizer to make cotton plants grow robustly and increase their resistance to stress. Apply 2-3 cubic meters of organic fertilizer per hectare, 20-30 kg of compound fertilizer for cotton, 1 kg of boron fertilizer, and 0.5 kg of zinc fertilizer as base fertilizer. 5. Suitable sowing. The suitable sowing date for the South-Central plastic film is after April 20th and no later than May 1st. Early sowing, because the ground temperature is low, the seedling is slow, the bacteria invasion time is long, susceptible to disease. Seafood Mix,Frozen Cooked Mussel,Frozen Pud Frozen Seafood,Frozen Shrimp And Seafood Mix Zhejiang Zhoushan Jiaze Aquatic Co., Ltd. , https://www.tianjia-aquatics.com