草肥是利用作物秸秆、杂草、树叶等经过堆积沤制而成的有机肥料。据化验分析,每500公斤草肥一般含有机物质100公斤,氮素2公斤、磷素1公斤,钾素2公斤。相当于1000公斤土杂肥或10公斤硫铵,5公斤过磷酸钙、4公斤硫酸钾的肥效,含的氮磷钾相当于20公斤复合肥。草肥含有大量的有 Fertilizer is the use of crop stalks, weeds, leaves and other accumulated from the system made of organic fertilizer. According to laboratory analysis, every 500 kg of fertilizer contains 100 kg of organic matter, 2 kg of nitrogen, 1 kg of phosphorus and 2 kg of potassium. Equivalent to 1,000 kg Tuza Fei or 10 kg of ammonium sulfate, 5 kg of superphosphate, 4 kg of potassium sulfate fertilizer, containing nitrogen and phosphorus equivalent to 20 kg of compound fertilizer. Grass contains a lot of there