农田施用有机肥,可有效地提高土壤有机质含量,改善土壤的团粒结构和理化性状,使土壤疏松、活化板结,提高通气性,贮存水分、养分能力增强,促进农作物增收、高产。 1吨人粪尿相当于硫酸铵25～40千克,过磷酸钙13～25千克,硫酸钾4～6千克。 1吨马粪相当于硫酸铵25～28千克,过磷酸钙17～19千克,硫酸钾4～5千 The application of organic fertilizer on farmland can effectively increase the content of soil organic matter, improve the aggregate structure and physical and chemical properties of soil, loosen the soil, activate the compaction, enhance aeration, store moisture and enhance nutrient capacity, and promote the increase of crops and high yield. 1 ton of human excrement is equivalent to 25 to 40 kg of ammonium sulfate, 13 to 25 kg of superphosphate and 4 to 6 kg of potassium sulfate. 1 tons of horse manure equivalent to 25 to 28 kg of ammonium sulfate, 17 to 19 kg of superphosphate, potassium sulfate 4 to 5 thousand