当前位置: 首页 > 文章 > 天宝山土壤的表面电荷特性 Ⅲ.土壤胶体吸附磷的特点 华中农业大学学报 1992 (4) 342-346
Position: Home > Articles > THE SURFACE CHARGE PROPERTIES OF SOILS IN TIANBAO MOUNTAINS Ⅲ. THE CHARACTERISTICS OF PHOSPHATE ADSORPTION ON SOIL COLLOIDS Journal of Huazhong Agricultural University 1992 (4) 342-346

天宝山土壤的表面电荷特性 Ⅲ.土壤胶体吸附磷的特点

作  者:
贺纪正;李学垣;徐凤琳
单  位:
华中农业大学土化系
关键词:
磷吸附;氧化物;粘土矿物;山地土壤
摘  要:
对天宝山垂直系列土壤胶体吸附磷的特点进行了研究,结果表明:①随海拔升高,土壤胶体对磷的吸附量急剧增加。②无定形铁铝氧化物是土壤胶体吸附磷的主要载体,而晶形氧化物的作用较小。③1.4 nm过渡矿物的层间羟基铝是层状矿物吸附磷的主要载体之一。④决定不同海拔高度土壤胶体吸磷能力的因子是不同的,黄棕壤中主要是层状粘土矿物和无定形铁铝氧化物,暗黄棕壤中主要是无定形铁铝氧化物和层状粘土矿物,而山地棕壤中以无定形铁铝氧化物占绝对优势。
译  名:
THE SURFACE CHARGE PROPERTIES OF SOILS IN TIANBAO MOUNTAINS Ⅲ. THE CHARACTERISTICS OF PHOSPHATE ADSORPTION ON SOIL COLLOIDS
作  者:
HE Ji-zheng LI Xue-yuan XU Feng-lin(Huazhong Agricultural University, Wuhan 430070)
关键词:
phosphate adsorption, oxides, clay minerals, mountain soil
摘  要:
The characteristics of phosphate adsorption on vertical zonality soil colloids of the Tianbao Mountains were studied. Results showed that: ①The phosphate adsorption capacity of soil colloids increased remarkably with the rising altitude of the mountains. ②Amorphous iron and aluminum oxides in soil colloids were the main carriers of phosphate adsorption, but crystalline oxides were not. ③Hydroxy-aluminum in the interlayer of 1.4 nm intergrade mineral was one of the main carriers of phosphate adsorption for the phyllosilicate mineral fraction of soil colloid. ④The main factors controlling phosphate adsorption capacity were various at different altitudes. For the yellow brown soil colloid, the main factors were phyllosilicate minerals and amorphous iron and aluminum oxides, For the dark yellow brown soil colloid, amorphous iron and aluminum oxides and phyllosilicate minerals, and for the mountain brown soil colloid, amorphous iron and aluminum oxides.

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