【摘要】 <正> 植物通过根系从土壤中吸收的⁹⁰Sr,经代谢作用,转移分布到地上部各器官,但大部分积累在茎叶中。茎叶和荚壳中⁹⁰Sr的积累量占地上部总积累量的90.6％～99.3％,籽实部更多还原

【Abstract】 Plants absorb 90Sr from soil through the root and transfer 90Sr to above-ground organs. About 90. 6%-99.3% of 90Sr accumulate in stem and leaf, and only about 0.7% ~9.4% of its in the kernel. The selection study was made using rice soil around NPP and Beijing drab soil in order to measure the ability of accumulation for 90Sr. The results show that among the test’s plants calabash family’s plants have the biggest ability and grass family plants have the least one. The absorption coefficient of 90Sr is 16.8~0. 6 in rice soil and 6.0~0. 5 in drab soil. It is in good time and economical to select for grass family plants during shooting-booting period, and for calabash family and bean cultures before bud-abloom stage.更多还原