At present, the rice crop in our county has entered the throwing period, and it is the basis for the harvest of rice to be harvested after the rice is thrown. All towns and townships must vigorously publicize and meticulously organize and do a good job in prevention and control of post-transplantation pests and rice plants that focus on pest control, disease prevention, and weed control. I. Control of rice stripe blight 1. Prevention and control of the virus vector Laodelphax striatellus: rice stripe disease has become an important disease on rice in our county. This year, the field has a high amount of S. littoralis and a high rate of poisoning. Rapid development, striped blight will be a major trend. According to the survey, this year the generation of Sphaerocephalus sulphate in the wheat field amounted to 150,000 heads; on May 25, Putian had emerged as immigrants, and on May 30, the amount of insects in the field began to surge. Ten thousand heads of some 52,000 heads; overwintering ash hoppers with a poison rate of 40.2%; generations of Laodelphax spp. with a poison rate of 24.3%; both greatly exceeded the pandemic's targets. The second generation of Laodelphax striatellus is the main destructive of our county. The prevention and control of the second generation of Laodelphax striatellus in Datian are the main measures to control the occurrence of rice stripe disease. Control methods: 7 days after throwing, about 10% of all paddy fields and 30 grams of loquat should be controlled once; about 7 days after the first drug, they should be treated again and again. When using the drugs, they should be used together with Tanabe weeds. In addition, Putian with medicine transplant must also be in place. Based on the prevention and control of wheat in paddy fields, it is necessary to prevent and control once on June 20-25. 2. Spraying antiviral agents: Combining with control of Laodelphax striatellus, spray 20% of rice and 100 milliliters of water per acre for even spraying of water. 2. In addition to Daejeon’s removal, and throwing in the field, in addition to the following: (1) After 5-7 days of rice throwing, 53% silver scorpion (50 g) per mu is used, 20 kg of wet fine soil is mixed, and the water layer is established in the field. After the dew is dry, spread it evenly and keep the water layer for more than 5 days. Attention should be paid when using drugs: First, the amount of drugs should be accurate, mixing drugs should be uniform; the second is to strengthen the water slurry management, to maintain the water layer in order to improve the effectiveness of control, but also do a good job of water shortages, to prevent flooding leaves; The rice is used immediately after the seedlings are established, and on this basis, the early use of the drug will improve the control effect; the fourth is to prevent the pesticide from contaminating other crops. (2) About 10 days after the rice is thrown, 1 bag (40 grams) of rice farm music is selected per acre. After draining the field water layer, the appropriate amount of water is sprayed evenly, and the water layer is established and maintained on the field one day after the treatment. Pay attention to the amount of quasi drug to be used, such as increasing the amount of herbicide when the grass age is large, and at the same time prevent the contamination of other crops. 2. Removing wheat from paddy fields: After wheat is collected and water is to be dried, after 2.5 leaves of rice, 25% paddy farm music (40 grams) per mu is used to uniformly spray the water, and the water layer is established on the field one day after the drug is applied. To keep water. When taking medications, pay attention to: when the grasses are more than three leaves in the field or when the amount of grass is too large, the dosage should be appropriately increased. Water retention is the key to improving control efficiency, and at the same time, it must prevent the contamination of other crops. III. Prevention and control of rice weeds This year, the occurrence of rice weevil in our county is light, and prevention and control should be focused on wheat and rice, and prevention and control work should be done well. After wheat sets on rice, it is necessary to prevent and control it, and after throwing it for 7 days, it is combined with the prevention and treatment of SBPH.
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