Biogas slurry and biogas residue technology applied to vegetables

As a clean and pollution-free energy source, biogas produced by the biogas residue and biogas slurry can be used as a high-quality farmyard fertilizer in production. Tests have shown that a biogas digester and biogas residue produced from a biogas digester of 8-10 cubic meters can meet 4-5 mu. Fertilizers needed for growing crops. The use effect on vegetables is extremely obvious, which can greatly increase the yield and quality of vegetables, enhance the disease resistance of plants, reduce the production investment, especially the investment of pesticides and fertilizers, and save the production cost. The product has reached the pollution-free standard and has realized the sound development of ecological agriculture. The technical points are now described as follows:

1. Biogas residue is used as basic fertilizer for transplanting seedlings of vegetables, and base fertilizer is applied to acupuncture methods. When transplanting seedlings, the seedlings shall be applied with a decomposed biogas residue of 2000 kg/mu. The planting hole shall be mixed with the garden soil excavated from the hole to be planted. For vegetables planted on-demand or in large areas, basal fertilizers are generally applied in the method of seeding. For melons, such as pumpkin, wax gourd, cucumber, tomato, etc., generally use large hole fertilizer methods, 3000 kg of bioslag per mu, 35 kg of superphosphate, 100 kg of grass ash mixed with appropriate amount of domestic garbage into the hole, cover A layer of garden soil about 5-10 cm thick will be irrigated immediately after planting and timely covered with straw or wheat straw.

2. Biogas slurry is generally top-dressed with two methods of root pouring and foliar spraying. The amount of biogas slurry poured into the root may be determined according to the variety of vegetables. The general dosage is 500-3000 kg per mu. The fertilization time should be sunny or late in the evening, and it should not be applied when it is raining or when the soil is too wet. The foliar sprayed biogas slurry must be gauze filtered before use. In the period of vegetable green leaves, the biogas slurry should be diluted 1 time with water, and the amount should be 40-50 kilograms. The dew should be dry and dry. It should be done in the evening in summer and not sprayed at noon or rain. Leaf vegetables can be fertilized in any growing season of vegetables, and biogas can also be sprayed in conjunction with disease prevention and extermination. The melons can be grown at budding stage, flowering stage and fruit enlargement stage, and 3% of potassium dihydrogen phosphate is added to the biogas slurry.

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