Biogas fertilizer is the residue left after fermentation of biogas. It is a high-quality and high-efficiency organic fertilizer with high and complete nutrient content. It is rich in nitrogen, phosphorus and potassium, which are essential for vegetable growth. Biogas fertilizer is divided into biogas residue and biogas slurry. A 10-m 3 biogas digester produces 4 tons of biogas residue and 6 tons of biogas slurry, which can supply 1,500 square meters of vegetables for the whole year. Biogas residue has high nutrient content, rich in organic matter and more humic acid, and plays an important role in improving the soil. Biogas residue is suitable for vegetable as base fertilizer or topdressing. Long-term use can make soil loose and fertility increase. The use of fermented biogas residue as a base fertilizer for vegetable production, and biogas slurry for various vegetable foliar top dressings not only enables all kinds of vegetables to grow vigorously, has a faster growing speed, and has increased disease resistance, and can prevent the occurrence of diseases and insect pests and improve vegetables. Yield and quality. Biogas slag and biogas slurry are used in the production of pollution-free vegetables as follows: Biogas residue is used for top dressing. The well-fermented biogas residue is an efficient and quick-improving organic fertilizer that can be used as a top-dressing fertilizer for various vegetables. The dressing is generally done with a planer hole and chasing the nest after chasing it. Tomatoes, cucumbers, eggplants, melons and other vegetables, the amount of fertilizer in acres once 1000-1500 kg. Biogas slurry is used for top dressing. When biogas slurry is used for vegetable topdressing, the mixed biogas slurry proposed from the discharge chamber generally uses a 1:2 ratio of water-biogas slurry to furrow irrigation. After the chase is completed, the biogas fertilizer is allowed to sink into the soil and the water is again poured. The amount of fertilizer on the mus is about 2000 kg, which can increase the leaf menu output by more than 30%. Biogas slurry is used for vegetable top dressing. When the biogas slurry is topdressed on the foliage, the extracted biogas slurry must be filtered to remove the slag. The biogas slurry has a water volume of 1:1 and can be sprayed directly on the foliage of various vegetables with a sprayer. The spray amount per mu is 150-200. kilogram. About 20 hours after spraying, the water was sprayed again. The foliar application was sprayed once every 10 days, and the yield of vegetables was increased by about 30%. (Cheng Honghua) Double Sided Fleece,Double Face Fleece,Wool Coating Fabric,Fine Wool Fabric Wuxi Kanghe Medical Consulting Co., Ltd. , https://www.jskanghe.com