稀土元素在黄豆体内的吸收、运转及分布

Studies on the Absorption, Transport and Distribution of Rare Earth Elements in Soybean

利用中子活化分析测定了黄豆不同生长期不同部位单一稀土元素的含量，结果表明，黄土高原土壤中的稀土元素不利于作物吸收利用；无论施用稀土元素与否，从现蕾期开始，稀土元素大量向作物结实器官运转；

Single rare earth element (REE) contents in various organs of soybean at different growing stages have been determined by using INAA. The preliminary results showed as follows: (1) It is very difficult for crops to absorb REE from soils of loess plateau, therefore, the effect of applying REE on plants in this region is much better; (2) In any cases, REE transfer apparently to fructification organs in their booting stage; (3) Recommending applying method is spraying plant leaves with REE nitrate solution of 300￣400 mg/kg at jointing and booting stage.