牲畜粪尿中所含的氮素,经过分解转化成氨态氮,如果保存不好,很容易挥发损失。保存氮素的简易办法是用作物秆、叶、杂草、草碳和泥土垫圈。垫圈材料可以吸收尿液,保持肥效。垫圈材料本身腐烂后也含有肥分。一斤藁草作褥草,能保存二至三斤尿,可以吸收零点四至一点八克氨态氮。一斤 Nitrogen contained in livestock excrement, after decomposition into ammonia nitrogen, if not preserved, it is easy to volatile loss. A simple way to conserve nitrogen is to use crop stalks, leaves, weeds, grass carbon and soil gaskets. Washer material can absorb urine, maintain fertilizer effect. The gasket material itself also contains fat after decay. A pound of hay grass for litter, can save two to three pounds of urine, can absorb 0.4 to 1.8 kilograms of ammonia nitrogen. A pound