Analysis in the doorThese items included particle composition, bulk density, organic matter, pH, available N,Olsen-P,available K, total salt concentrations and fractions of four heavy metals (Cd> Cr, Pb> Hg) and residua of DDT & BHC pesticide.

• 室内分析 分析项目包括土壤颗粒组成、容重、有机质、pH值、碱解氮、有效磷、速效钾、全盐含量、重金属元素(Cd、Cr、Pb、Hg)全量以及农药滴滴涕和六六六的残留量。