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一、土氮磷肥:用动物骨加工成骨粉。其氮磷含量高,是植物的最佳底肥之一,肥效相当于高效氮磷复合肥。制法:将动物骨头蒸煮,除去部分脂肪后碾成细末。其中含氮2%～6%,含五氧化二磷15%～28%。二、土磷酸二氢钾:取过磷酸钙与热水按2:5的比例混合,搅拌后静置48小时,过滤备用;取草木灰与热水按6:15的比例混合搅拌静置10分钟,过滤。将两种溶液混匀即成浓度为1%的磷酸二氢钾粗制液。
First, soil nitrogen and phosphorus fertilizer: animal bone processing into bone powder. Its high content of nitrogen and phosphorus, plant one of the best base fertilizer, fertilizer efficiency equivalent to efficient nitrogen and phosphorus fertilizer. System of law: the animal bones cooking, remove some fat crushed into fine. Of which nitrogen 2% to 6%, containing phosphorus pentoxide 15% to 28%. Second, the earth monobasic potassium phosphate: Take the superphosphate and hot water at a ratio of 2: 5, after stirring for 48 hours, filtered spare; take ash and hot water at a ratio of 6:15 mixing and standing for 10 minutes ,filter. The two solutions were mixed into a concentration of 1% potassium dihydrogen phosphate crude solution.