植物阻滞剂对水稻中镉的吸收和运转的影响

Effect of the Plant Retarder on Cd Uptaken and Running by Rice

采用盆栽试验,研究了不同浓度植物阻滞剂处理下水稻全生育期内镉在不同部位的分配累积规律。结果表明:随喷施浓度的增加,各处理镉含量降低,各部位镉含量为根>茎>叶>子粒;根部镉含量随时间的变化规律为分蘖期>拔节期>成熟期>孕穗期>秧苗,而茎中镉含量变化规律为分蘖期>孕穗期>成熟期>拔节期>秧苗,叶中的镉含量为成熟期>分蘖期>孕穗期>拔节期>秧苗;植物阻滞剂对镉的吸收和运转有明显的阻滞作用,且作用部位主要在叶部。

Using pet experiment, the distribution and accumulation of cadmium in different parts of rice under different concentrations of plant inhibitor were studied. The results showed that with the increase of spraying concentration, the cadmium content in each treatment was decreased, and the cadmium content in every part of the root 〉 stem 〉 leaf 〉 kernel; changes of root Cd content with time is tillering stage 〉 jointing stage 〉 mature stage 〉 booting stage 〉 seedling, changes of stem Cd content is tillering stage 〉 booting stage 〉 mature stage 〉 jointing stage 〉 seedling, changes of leave Cd content is mature stage 〉 tillering stage 〉 booting stage 〉 jointing stage 〉 seedling ; plant retarder has obvious effects on the Cd uptaken and running, and are mainly in the leaves.