Through the survey and statistics of data, about loading amount of nitrogen minus quota discharge, loading amount of permeable water nitrogen, loading amo...

• 经过氮素差额排出负荷量,渗漏水氮素负荷量,地表水氮素负荷量,降水氮素负荷量,灌溉水氮素负荷量等数据的调查和统计,得出氮素全年损失率及损失途径。