The ZPNC chang of paddy soils drived from parent material that content high or low Fe oxide are smaller than that middle, meanwhile,ZPNC were influenced by SiO_2% and SiO_2/(Al_2 O_3+Fe_2 O_3)in clay too.

• 不同母质的影响主要表现为高铁和低铁母质水稻土剖面 ZPNC 变异较小。 中铁母质者则变异较大；同时亦受到粘粒 SiO_2和 SiO_2/(Al_2O_3+Fe_2O_3)摩尔比的影响.