The self-made raw materials for soil and fertilizer are extensive, the method is simple, economical and practical, and its fertilizer effect is no less than that of chemical fertilizers. Now, several self-made methods for high-efficiency soil fertilizers are introduced for reference. Soil ammonia water fresh cow dung 50 kilograms, soybean powder 50 grams, gypsum powder 5 kilograms, sealed at 25 degrees below 3 days, 3 times the water application, fertilizer efficiency higher than ammonia. Soil ammonium sulfate urea 50 kg, 5 grams of plaster, 25 kg of water, mix well, closed 10 days after application, fertilizer effect is equivalent to ammonium sulfate. The soil-compound fertilizer will first smash and sifter the superphosphate, and then stir the 120-150 kilograms of human urine evenly according to 100 kilograms of superphosphate, then pile it into a conical shape, cover it tightly with 3 centimeters of mud, and stack it for 7 days. Can be used, ideal fertilizer effect. Be careful not to pile up in low places to prevent flooding; this soil compound fertilizer can be used as a base fertilizer, top dressing, and seed fertilizer. Base fertilizer can be divided into manure fertilizer and soil miscellaneous fertilizer. When it is used as a fertilizer, it should not be in contact with seeds to prevent influence. Germination; when applied as topdressing, it can be planted or applied intensively, away from the roots of crops to prevent burning of seedlings. Soil potassium dihydrogen phosphate superphosphate and hot water according to the ratio of 2:5, stir and let stand 48 hours, filter spare; ash and hot water according to the ratio of 6:15 stir and let stand for about 10 minutes, filter and then The two filtered solutions are mixed to prepare a crude solution containing potassium dihydrogen phosphate and the effect is the same as potassium dihydrogen phosphate. The soil-nitrogen-ammonia-phosphorus compound fertilizer uses animal bone processing to form bone meal, which is an important delayed-effect agricultural fertilizer. It is generally used as a base fertilizer, and has the components of raw bone powder and cooked bone powder. The raw meal of bone is smashed by simply cooking and removing some of the fat. The powder, which contains 2-6% nitrogen, contains 15-28% phosphorus pentoxide, is a high-efficiency nitrogen-phosphorus compound fertilizer; steamed bone powder (also known as defatted bone meal) is the bone after solvent extraction of fat, and then through the high temperature Crushed after cooking, which contains 1.5-5% nitrogen. Containing 16-25% phosphorus pentoxide, its fertilizer efficiency is also high.
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