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人尿的氮肥效果比豆饼、粪干好,同硫酸铵、硝酸铵等差不多,但肥效最易损失。而且在华北地区示范推广积肥工作中,困难比较多。为甚么肥效又好、又快,数量又大的尿肥,到现在还不能在广大地区普遍利用?从技术方面来看大约有两个原因:第一是农业社对人尿的肥料价值还沒有足够的认识。第二是有些关於使用尿肥的“理论知识”在影响着推广工作。
Human urine nitrogen than bean cake, dung well, with ammonium sulfate, ammonium nitrate and other similar, but the most effective loss of fertilizer. And in North China demonstration and promotion of fertilizer, the more difficult. Why fertilizers and good, fast, large quantities of urine fertilizer, up to now can not be widely used in the vast area? From a technical point of view for about two reasons: First, the agricultural society of human urine fertilizer value is not yet Enough understanding. The second is that some of the “theoretical knowledge” about the use of urine fertilizers is affecting promotion efforts.