通过砂培和田间小区试验以及电子显微技术,研究了外源稀土对花生的增产机理。结果表明,适宜浓度稀土浸种花生不仅提高了叶绿素含量和光合强度,而且还促进了叶细胞叶绿体的生长发育,使叶绿体结构完整、排列整齐,基粒片层数增多,紧密度高,从而有利于光能的吸收和转化,提高荚果产量。浸种花生各器官中稀土元素分布为:根>叶>茎>果壳>果仁;总吸收量为:叶>根>果壳>果仁。 Through sand culture and field plot test and electron microscopy, the mechanism of increasing rare earth peanut yield was studied. The results showed that the soaking of peanuts with appropriate concentration of rare earth not only increased chlorophyll content and photosynthetic rate, but also promoted the growth and development of chloroplasts in leaf cells. The structure of chloroplasts was intact, arranged neatly, the number of grana tablets was increased and the compactness was high, Light energy absorption and conversion, improve pod production. The distribution of REEs in soaked peanut organs was: root> leaf> stem> shell> nut; The total absorption was leaf> root> shell> nut.