期刊论文

Effect of Combined Soil Amendment Regulating Chemical Forms of Cadmium and Arsenic in Paddy Soil and Their Bioaccumulation and Translocation in Rice

Liao, B.

中文

土壤学报

0564-3929

2016

53

6

1576-1585

10.11766/trxb201601260044

(41501344):国家自然科学基金项目 (农办财函[2015]38号):农业部与财政部科研专项 (15K148):湖南省教育厅项目 (41501344):Supported by the National Natural Science Foundation of China (Document[2015]38):the Science Research Project jointly sponsored by the Ministry of Agriculture and the Ministry of Finance, PRC (15K148):the Science Research Project of the Education Department in Hunan Province

本校为第一机构

为治理镉砷污染农田土壤,选取湘南某矿区镉砷复合污染稻田土壤,以水稻盆栽实验研究了复合改良剂HZB (羟基磷灰石+沸石+改性秸秆炭)对土壤中镉(Cd)、砷(As)赋存形态以及水稻累积转运Cd和As的影响。结果表明,施用HZB能提高土壤pH 0.19~0.79个单位,阳离子交换量增加22.1% ~ 60.4%;施用HZB使活性较大的酸提取态Cd含量降低了6.5% ~ 22.9%,促进了Cd向难溶态的转变,可使有机结合态Cd增加2.5% ~ 56.5%;施用HZB促进活性As向难溶型的钙型As转化,钙型As含量增加2.8% ~ 53.3%,也可使交换态As含量降低7.0% ~ 39.5%,但当施用量超过4.0 g kg~(-1)时则会增加交换态As含量。水稻根系对Cd的富集系数在0.65 ~ 1.21之...

For remediation of paddy soil complexly contaminated with cadmium and arsenic, a pot experiment with rice planting in the paddy soil collected from southern Hunan Province, China, was conducted to study effects of a combined soil amendment, HZB (hydroxyhistidinet + zeolite + biochar) on chemical forms of Cd and As in the tested soil and on accumulation and translocation of Cd and As in rice. Results show that application of HZB significantly increased soil pH (by 0.19 ~ 0.79) and soil CEC (by 22.1% ~ 60.4%). In addition, it reduced the content of labile soil acid soluble Cd by 6.5% ~ 22.9% by ...