论文部分内容阅读
以吉林省主要耕作土壤(白浆土、黑土和黑钙土)为研究对象,采用X射线衍射(XRD)分析方法,研究土壤胶散复合体(G0、G1、G2)中粘粒矿物组成特征,探讨不同土壤类型下胶散复合体中粘粒矿物的演化规律及形成机理。结果表明:对3种不同土壤类型而言,各组复合体含量均呈G0>G1>G2的趋势,且G0/G1、G0/G2均大于1。对胶散复合体不同组分而言,除G0组的含量大小顺序为黑土>白浆土>黑钙土外,G1、G2、(G0+G1+G2)组均为白浆土>黑土>黑钙土。XRD物相分析表明,主要耕作土壤胶散复合体粘粒中均以2∶1型粘粒矿物为主,且均含有蒙脱石、蛭石、伊利石、高岭石和石英等;黑土和黑钙土复合体中粘粒以蒙脱石、伊利石为主,白浆土则以蛭石、伊利石为主。土壤胶散复合体不同矿物的演变存在差异,3组复合体受风化影响的顺序为G0>G1>G2。
Taking the main cultivated soils in Jilin Province (albic soil, black soil and chernozem soil) as the research objects, the characteristics of the clay mineral composition in the soil colloidal composite (G0, G1 and G2) were studied by X-ray diffraction (XRD) To explore the evolution and formation mechanism of clay minerals in the rubber-cement complex under different soil types. The results showed that for each of the three different soil types, the content of the complexes in each group showed a trend of G0> G1> G2, with G0 / G1 and G0 / G2 both greater than 1. For the different components of the composites, except G1, G2, and (G0 + G1 + G2), the contents of G0 were in the order of white soil> black soil> Chernozem. XRD phase analysis showed that 2: 1 type of clay minerals were dominant in the clay of the main tillage soils, all of which contained montmorillonite, vermiculite, illite, kaolinite and quartz; black soil and black Calcareous clay complex to montmorillonite, illite-based, white soil is vermiculite, illite-based. There were differences in the evolution of different minerals in the soil cement-dispersed complex. The order of the three groups of complexes affected by weathering was G0> G1> G2.