我是作物生长发育过程中需要量最多的营养元素,人们普遍认识到我对作物的重要作用,所以争先恐后地购买以我为主的化肥,积攒以我为主的农家肥。但是,有些人对我的脾气不甚了解,使我的作用难以充分发挥。 我在人粪尿中以碳酸铵的形式存在,碳酸铵很不稳定,易分解,气温稍高我便象气球一样,不由自主地从人粪尿中飞出,从而降低了人粪尿的肥效。据试验,如不采取保护措施,我仅在7月份里就损失35.5％。不过, I am the nutrient element that needs most in the course of crop growth and development. People generally recognize that I have an important role in the crop. I am therefore scrambling to buy fertilizer that is predominantly based on me, and accumulating mainly manure based on me. However, some people do not understand my temper, making my role difficult to fully play. I am in the form of ammonium carbonate in human excrement, ammonium carbonate is very unstable, easy to decompose, the higher the temperature I would like a balloon, involuntarily fly from the human excrement, thereby reducing the manure urine fertilizer. According to the test, I only lost 35.5% in July if no protective measures were taken. but,