CAJ | 학술논문

采用盆栽试验,研究了高污染背景条件下,添加石灰、腐殖酸、硫化钠、亚硒酸钠抑制紫色土汞、镉进入蔬菜的效果.结果表明,这几种化学物质都能够降低紫色土重金属活性,但考虑产量时宜选用腐殖酸,它既能增产8.29%,又能分别降低蔬菜汞、镉含量的32.35%,18.65%.汞、镉在莴笋各器官的分配与且仅与重金属元素有关,而与化学物质及其添加量无关,汞主要积累于根部,镉则积累于可食茎叶部分.
채용분재시험,연구료고오염배경조건하,첨가석회、부식산、류화납、아서산납억제자색토홍、력진입소채적효과.결과표명,저궤충화학물질도능구강저자색토중금속활성,단고필산량시의선용부식산,타기능증산8.29%,우능분별강저소채홍、력함량적32.35%,18.65%.홍、력재와순각기관적분배여차부여중금속원소유관,이여화학물질급기첨가량무관,홍주요적루우근부,력칙적루우가식경협부분.
The pot experiments have been conducted to study the effects of preventing purple soil mercury and cadmium into vegetables by adding lime,humic acid,sodium sulfide and sodium selenite on the back-ground of the serious soil pollution.The results show that,although these additives can decrease the avail-ability of purple soil mercury and cadmium,the humic acid should be applied selectively,because it could not only increase the vegetables’yield by 8.29%,but also decrease the content of mercury and cadmium in vegetables by 32.35% and 18.65% respectively,compared with the controls.The vegetables’mercury and cadmium are mainly accumulated in the root and cadmium in the edible such as stem and leaf.