Exchangeable Na

...，阳离子交换量(Cation exchange capacity)，交换性钙(ExchangeableCa) ，交换性镁(Exchangeable Mg)，交换性钠(Exchangeable Na)，交换性钾(Exchangeable K)，交换性锰（Exchangeable Mn）, 水溶性盐（Water-soluble salts）（Total,Cl-,SO42-,Ca2+,Mg2+,K+,N...