农用稀土在土壤中形态变化的研究

Change of Rare-Earth Elements (REEs) Forms Using Them as Fertilizers

利用随机小区试验的方法,研究了施用不同剂量的稀土微肥后,对土壤中B1、B2和残渣态稀土含量变化的影响以及是否改变小麦籽粒中稀土元素的含量。结果表明,即便是目前稀土施用量的100倍也不会提高土壤中生物有效性较高的B1、B2态稀土的含量。但对表层土壤中残渣态稀土的含量有一定的增加作用。试验未检测到各处理对小麦籽粒中稀土的含量有显著性地影响。

A random plot experiment procedure was utilized to probe the possibility of whether change for B1, B2 and residues forms of REEs in soil and of accumulation in grains, respectively, after using REEs as fertilizer was simultaneously conducted in the present study. The results showed that B1, B2 forms of REEs were not changeable after using REEs as fertilizer, even as high as 100 times usual dose used. But the residue forms for REEs in treatment V was enhanced in top soil. There were not significantly different contents of REEs in grains of wheat among six treatments.