以江苏省丘陵地区的水稻土作为研究材料,在已有的研究成果的基础上进一步研究铁的活化和晶胶率与水型之间的关系。并首次采用D＇_1hoore和Dixit的方法,对水稻土的粘粒特性作了初步研究。结果表明,铁的活化是水稻土发育的中心过程,随着水稻土发育程度的加深,粘粒的相对移动值RM也随之发生改变。最后用数学方法处理数据,直观地显示出不同水型水稻土之间的关系。 Taking paddy soil in hilly area of ​​Jiangsu Province as the research material, the relationship between iron activation and crystallinity rate and water type was further studied on the basis of the existing research results. And for the first time using D’_hoore and Dixit method, the clay soil characteristics of a preliminary study. The results show that the activation of iron is the central process of paddy soil development. With the deepening of paddy soil development, the relative movement value of cosmids RM also changes. At last, the data is processed mathematically, which shows the relationship between different water-paddy soil visually.