期刊论文

Gu, Jiao-Feng(gujiaofeng@163.com)

中文

环境科学

0250-3301

2022

43

9

4810-4819

10.13227/j.hjkx.202112028

2017YFD0801105:国家重点研发计划 2019TJ-N05:湖南省科技人才托举工程项目

本校为第一机构

为研究低分子有机酸柠檬酸与农艺措施刈割强化象草修复镉(Cd)污染土壤的效应,开展象草盆栽种植试验.试验中柠檬酸设置单次1.25、2.5和5 mmol·kg~(- 1)施用水平;刈割设置0、1和2次.结果表明: ①在柠檬酸施用量为1.25 mmol·kg~(- 1)且刈割1次时,象草地上部生物量增幅最大达39.11%,高剂量柠檬酸施用和多次刈割不利于生物量的增长; ②柠檬酸施用和刈割均有增大象草茎和叶Cd含量的效应,刈割措施中最后一茬收获的象草茎Cd含量较大,且在mB (柠檬酸) 5 mmol·kg~(- 1)施用下可将茎ω(Cd)增大到18.53 mg·kg~(- 1),相比第一茬增大约6倍; ③柠檬酸施用和刈割措施能够降低象草根际土壤pH和有机质,对土壤总...

A pot eXperiment was conducted to investigate the effects of citric acid application and mowing frequency on the remediation of cadmium (Cd) contaminated soil by napier grass (Pennisetum purpureum Schum). Three levels of citric acid were divided into three applications of 1. 25, 2. 5, and 5 mmol.kg - 1 . The mowing frequency of the plants was divided into no mowing, one mowing, and two mowing treatments. The results showed that: 11. 25 mmol.kg - 1 citric acid increased the biomass of the upper part of the plant by 39. 11% with one mowing, and m...