摘要
研究了在小麦土培过程中黄棕壤中内源及外源稀土元素的形态分配特征及其动态变化。结果表明,生物作用使土壤中内源稀土元素由植物难利用形态向易于吸收利用形态转化 ,外源稀土元素在土壤中有不断变固定的趋势。外源稀土元素主要进入了土壤中的有机结合态 ,其分配系数可达80 %以上。外源单一稀土元素La、Ce、Pr、Nd在土壤各形态中的分配存在差异。
Wheat soil culture was carried out to study the features of the native and the applied RE fractionation and its transformation in yellow brown earths. The result showed: During the wheat soil culture the native RE availability was increased in yellow-brown earth, on the contrary, a tendency of forward fixation was found in the transformation of the applied RE. The applied RE entered in mainly bound to organic matter form in the soil, and its distribution could be more 80%. The features of the distributions of each element of La, Ce, Pr, Nd were different.
出处
《农业环境保护》
CSCD
2000年第1期4-6,共3页
Agro-Environmental Protection
基金
国家自然科学基金!资助项目(19392100)
