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在我国施用稀土时间最长的黑龙江省花园农场 ,研究比较了施用稀土 1 2 a和不施稀土的对照处理上小麦和土壤中的稀土元素的分布、累积及运移 .结果表明 ,长期叶面喷施稀土并未造成耕层土壤和下部土层的稀土元素的累积 .成熟期小麦植株各部位的稀土元素含量顺序为根 >叶 >茎、壳 ;稀土元素主要累积在根部 ,其次是叶 ,茎和壳累积较少 .喷施处理小麦根部的稀土元素累积量高于对照 ,叶部也有此趋势 ,而茎、壳等部位差异不大 .根、茎、叶、壳稀土元素分布模式与土壤中相似 ,与施用的常乐稀土差别较大 ;长期喷施稀土未曾造成籽粒中稀土元素的明显累积
In the garden farms with the longest Rare Earth in Heilongjiang Province, the distribution, accumulation and migration of rare earth elements in the wheat and soil were investigated by comparing the application of Rare Earth with 12-a and non-Rare-earth treatments. The results showed that long- Rare earth fertilization did not result in the accumulation of rare earth elements in the topsoil and in the lower part of the soil. The order of REEs in different parts of the wheat plants at maturity was root> leaf> stem and shell. The rare earth elements mainly accumulated in roots, followed by leaves, Stems and shells accumulated less. The accumulation of rare earth elements in wheat roots was higher than that in the control, and the leaf tended to have the same tendency, while the stems and shells did not show any significant differences. The distribution patterns of REEs in roots, stems, In the same, and the application of Changle rare earth difference greater; long-term spraying rare earth did not cause significant accumulation of rare earth elements