The results show that in the same H & A, with depthofsoil increasing, contents of organic matter(OM), NO-3-N, available phosphor(AP) and urease decreased respectively.
结果表明,对于同一封育年限的油松林地,土壤有机质、硝态氮、速效磷和脲酶含量随采样深度增加而减小;
2
And there is a significant correlation between the mass content ofavailable P and soildepth (P<0.05) and the mass percentage ofavailable P is verified regularly with the increasing ofsoildepth.