Pollution-free black beans production technology
The production of pollution-free black beans, the production of the environmental indicators should be consistent with environmental standards of pollution-free food production environment. First, species selection and processing According to the type of local production ecological conditions and market demand, the selection of varieties should be based on the local conditions and select high-quality varieties with suitable maturity, high yield, high quality and strong resistance, such as Black Pearl 1. 2. The seeds before sowing were sown and selected, and the seeds were so selected that they had a netness of 99%, a purity of 98%, a germination rate of 95%, and a quality of two. 3. Seed treatment with rhizobia 0.75 liters / hectare evenly seeded in dark conditions, can not be mixed with fungicides after seed dressing, sowing within 24 hours after sowing. Second, the election site preparation 1. The selected crop rotation uses wheat-maize-black beans, corn-wheat and black beans for a three-year crop rotation system. Black beans are grown using wheat bran or corn borer. 2. Soil preparation and soil preparation is mainly based on spring soil preparation. It is necessary to intensively cultivate the soil, and after the planting, the soil is ridged in a timely manner and the ridge width is 60 cm. Before the preparation of land, evenly fertilize 30 tons of high-quality farmyard manure per hectare, and plunge into the plough layer together with the stubble. Third, precision seeding Fine period sowing is generally from May 15th to 20th. When the soil is 5cm deep and the ground temperature stably passes 8°C to 9°C, the mastery of the lyrics is timely and accurately planted on the ridge with a precision planter. Crackdown. 2. The depth of sowing is generally 3 to 4 cm. The sown soil mass or lye should be shallow, and spring drought, windy, loose soil, or poor scent can be slightly deeper. 3. Density reasonable planting density should be determined according to the characteristics of varieties, natural conditions, soil fertility and cultivation methods. The seedling density is between 200,000 and 260,000 plants per hectare, and the seeding rate is between 70 and 90 kg per hectare. 4. When deep sowing of seed fertilizer, the compound fertilizer is layered deep into 8 cm and 12 cm seeds with a precision seeder, and the amount of fertilizer is 100-120 kg/ha. Fourth, fine management 1. Digging and topdressing In order to increase the ground temperature, store water, protect the weeds, eliminate weeds, enhance the activities of soil microorganisms, and promote the healthy growth of seedlings. After the seedlings are planted, the ridges and furrows should be deepened in time to achieve two shovels and three rakes. Before the grass seed is formed, the grass is pulled out again. . Combined with two times of cultivating soil, topdressing urea at 60 kg/ha. 2. The foliar dressing was applied to the first flowering stage and drumming stage of black soybeans. The foliar surfaces were sprayed with 1% urea solution and 0.2% potassium dihydrogen phosphate solution once. 3. Timely irrigation is required to promote the subsequent black bean grain plump, in the flowering and seedling stage, in case of drought should be timely irrigation 1 to 2 times, generally 1 irrigation 400 cubic meters / ha, with water applied 45 kg of urea. 4. Prevention and control of pests with 10% imidacloprid 1500 times spray control aphids. In the early stage of gray spot disease, spraying with 40% carbendazim 300 times sprayed. China Agricultural Network Editor
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