奶牛粪尿是一项重要的肥源,除含有氮、磷、钾外,还含有大量的有机物,对改良土壤、培肥地力有重要作用。一、奶牛粪尿的排泄量及养分含量奶牛的饲养方式不一,个体大小不同,排泄量也有差异。据测定,每头成年奶牛年排泄量平均为10.95～14.60吨,含氮素41.6千克、五氧化二磷16.1千克、氧化钾 Dairy manure excretion is an important source of fertilizers, in addition to containing nitrogen, phosphorus and potassium, but also contains a large number of organic matter, to improve soil fertility and fertility have an important role. First, the excretion of dairy manure urine and nutrient content Cows feeding in different ways, individual size, excretion is also different. It is determined that the average annual excretion of dairy cows per adult is 10.95 ~ 14.60 tons, containing nitrogen 41.6 kg, phosphorus pentoxide 16.1 kg, potassium oxide