含氮磷钾最多的物质是 粪肥类。以下是一些常见粪肥的氮磷钾含量:鸡粪:氮1.6%,磷0.8%,钾0.5%。牛粪:氮0.3%,磷0.25%,钾0.15%。羊粪:氮0.65%,磷0.5%,钾0.25%。猪粪:氮0.55%,磷0.5%,钾0.45%。鹅粪:氮0.55%,磷0.5%,钾0.5%。从这些数据可以