In recent years, Huachuan County has been approved as a green rice production base by the Ministry of Agriculture. This year, it has an area of ​​approximately 500,000 mu and distributes towns and towns such as Spark, Entrepreneurship, Sujiadian and Xincheng. In order to develop and produce green rice that is pollution-free, pollution-free, safe and nutritious, the county has adopted agricultural control and biological control technologies for the prevention and control of diseases and weeds. The application techniques and results are now described as follows: 1. The agricultural control technology used disease resistance. , insect-resistant varieties, non-chemical agents for seed treatment, seedling cultivation, strengthening cultivation management, weeding, weeding and manual weeding. In autumn, deep turning, sun drying, clean gardening, crop rotation, intercropping and a series of measures all play a role in pest control. Second, biological control technology 1. Rice disease prevention Main diseases of rice in Huachuan County are blight, rice blast, leaf spot disease, leaf sheath spoilage disease. Blight occurs in seedbeds. Each farmhouse with 150 square meters uses 10 grams of Liu Nongsu, 10 grams of urea, 100 grams of vinegar, and 15 kilograms of water. Severe plots are generated, and the sprinklers are directly drained to the roots. More than 95%. Diseases occurred in Honda and the biological agent used was 72% of streptomycin-contained soluble powder sprayed on 14 ml of water and 2500-3000 times of water. In heading stage, especially in booting stage and full heading stage, if the head and neck pods are heavy, spraying one or two times, the control effect can reach more than 92%. (In the case of rain, it is necessary to make up the spray) 2. Rice Insect Pest Control The rice pests in Huachuan County are still mainly rice negative slime and rice leaf miner. The use of biological agents in pest control is 1.5% avermectin EC, the amount of 180 ml per mu for the water 1500 ~ 2000 times liquid spraying, control efficiency up to 90%. 3. Prevention and control of rice weeds In recent years, weed communities in Huachuan County are mostly grasses, sedge weeds and broad-leaved weeds. Some chemical pesticides have poor control effects and seriously affect rice quality. In order to ensure the production of pollution-free and pollution-free green rice, we adopt the method of rice-fishing and weed control. Rice fields are stocked with two-year-old grass carp and carp, and they are released when new roots are planted after transplanting. 22.5 to 30 kilograms of carp are stocked per hectare, and 250 to 300 ducklings are stored in paddy ducks per hectare, which can remove weeds in paddy fields very cleanly.
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