论文部分内容阅读
通过粘粒矿物的定量分析,研究了我国东部花岗岩发育的红壤和黄壤的粘粒矿物组成。赤红壤、红壤和黄红壤的粘粒(<2μm)中高岭石含量分别为54%、42%和35%,这与该土壤的年均气温之间有明显的正相关(r=0.998,n=3),然而这三个土壤粘粒的风化淋溶系数与年均气温呈良好的负相关(r=1.000,n=3)。黄壤与红壤的粘粒矿物组成有明显的差异,黄壤中含有较多的三水铝石和2:1型粘土矿物,而高岭石较少;红壤中三水铝石很少,在安徽的黄红壤中虽有不少非晶质氧化铝,但未见有三水铝石存在。
Based on the quantitative analysis of clay minerals, the clay mineral composition of red soil and yellow soil developed in eastern granite in China was studied. The content of kaolinite in clay (<2μm) of red soil, red soil and yellow-red soil were 54%, 42% and 35%, respectively, which had a significant positive correlation with the mean annual temperature of soil (r = 0.998, n = 3). However, the weathering leaching coefficients of these three soil samples showed a good negative correlation with the annual mean temperature (r = 1.000, n = 3). The clay minerals of yellow soil and red soil are obviously different in composition, yellow soil contains more gibbsite and 2: 1 type clay minerals, while less kaolinite; red soil little gibbsite, yellow in Anhui Although there is a lot of amorphous red alumina, but there is no gibbsite exist.