中国土壤颗粒研究 Ⅱ.太湖地区黄泥土型水稻土及其各级颗粒的理化特性
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STUDIES ON SOIL PARTICLES IN CHINA Ⅱ. SOME PHYSICAL AND CHEMICAL PROPERTIES OF SOIL PARTICLES OF DIFFERENT SIZE FRACTIONS IN THE PERMEABLE PADDY SOIL OF TAI LAKE BASIN
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    摘要:

    对太湖平原地区高产的黄泥土型水稻土的全土(<1毫米)及7个粒级(1—0.25,0.25—0.05,0.05—0.01,0.01—0.005,0.005—0.002,0.002—0.001和<0.001毫米)共8个土样,进行测定。结果表明:黄泥土粘粒部分(<0.002毫米)的粘土矿物,主要由水云母、高岭和蒙脱组成。粗粘粒级(0.002—0.001毫米)和细粘粒级(<0.001毫米)中粘土矿物的分配有明显差异;砂粒级(1—0.05毫米)中除了主要的石英外,还含有少量“铁锰砂”,所以该粒级中的SiO2含量较粉粒级(0.05—0.002毫米)的低,而Fe2O3的含量则相反,容积磁化率也较高;可塑性和膨胀性都是在<0.002毫米时才始现。上述特点与作者过去所研究的白土型水稻土类似。但是,与国内外报道的几种旱地土壤的资料有所不同。

    Abstract:

    Eight soil samples of permeable paddy soil collected form Tai Lake Basin were investigated. The main results are summarized as follows: 1. The clay minerals of the clay fraction in the soils are predominated by hydromica, ka.olinite and montmorillonite. 2. There is distinct difference in the distributions of clay minerals between the coars clay fraction (0.002-0.001 mm) and fine clay fraction(<0.001 mm). 3. The sand fraction (1-0.05 mm) containing "iron-manganese sands" is less in SiO2 and more in Fe2O3 than the silt fraction (0.05-0.002 mm),and it is also higher in volume magnetic/susceptibility than the silt fraction. 4. Plasticity and swelling start to be found only in the clay fraction(<0.002 mm). All the properties of the permeable paddy soil mentioned above are similar to those of bleached 0paddy soils reported by the authors in 1982, but different from those of the upland soils raported by others.

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邓时琴,徐梦熊.中国土壤颗粒研究 Ⅱ.太湖地区黄泥土型水稻土及其各级颗粒的理化特性[J].土壤学报,1986,23(1):57-68. Deng Shiqin, Xu Mengxiong. STUDIES ON SOIL PARTICLES IN CHINA Ⅱ. SOME PHYSICAL AND CHEMICAL PROPERTIES OF SOIL PARTICLES OF DIFFERENT SIZE FRACTIONS IN THE PERMEABLE PADDY SOIL OF TAI LAKE BASIN[J]. Acta Pedologica Sinica,1986,23(1):57-68.

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  • 在线发布日期: 2013-02-25
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