Page 270 - 《环境工程技术学报》2022年第5期

Vol.12，No.5 环 境 工 程 技 术 学 报 第 12 卷，第 5 期
Sep.，2022 Journal of Environmental Engineering Technology 2022 年 9 月

林小兵，武琳，周利军，等.粉葛对农田土壤镉的富集特 征 [J].环境工程技术学报，2022，12（5）：1626-1632.
LIN X B,WU L,ZHOU L J,et al.Accumulation characteristics of cadmium in farmland soil by Pueraria thomsonii[J].Journal of Environmental
Engineering Technology，2022，12（5）：1626-1632.

粉葛对农田土壤镉的富集特征

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林小兵 ，武琳 ，周利军 ，黄欠如 ，刘少华 ，陈锋 ，欧阳国平 ，张秋梅 2*
1.国家红壤改良工程技术研究中心, 江西省红壤研究所
2.江西省新余市农业科学研究所
摘要 选用生长速度快、生物量大、经济价值高的富集植物是重金属生物修复新的突破口。为研究粉葛对农田土壤 镉 (Cd 的
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富集特征，采用大田试验探 讨 3 种污染程度下粉葛不同部位葛 根 (葛粉和葛渣)、葛头、主藤、侧枝和叶片 中 C 浓度。结果表
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明：粉葛不同部位 中 C 浓度表现为侧枝（8.96 mg/kg）>主藤（6.85 mg/kg）>叶片（5.22 mg/kg）>葛头（2.80 mg/kg）>葛渣（1.36
d
mg/kg）>葛根（1.21 mg/kg）>葛粉（0.16 mg/kg），且随土壤污染程度增加而增加，表现为中、高污染显著高于低污染（P<0.05）。除
葛根外，粉葛其他部位对土 壤 C 的富集系数均大 于 1(1.09～8.65)，转运系数 为 2.59～8.98。粉葛各部位 中 C 的分配率表现为
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侧枝（35.64%～43.81%）>主藤（21.55%～25.49%）>叶片（15.40%～23.63%）>葛根（7.03%～9.94%）>葛头（5.99%～9.57%）。粉葛
各部位生物量表现为葛根>侧枝>叶片>主藤>葛头，粉葛 对 C 移除量随土壤污染程度递增，具体为高污 染 (45.39 g/hm )>中污染
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(39.96 g/hm )>低污 染 (16.56 g/hm )。总体上，粉葛各部位 中 C 浓度与土壤有机质、有效 态 Cd、 总 C 浓度呈显著正相关，而与
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土 壤 p 均呈负相关。 在 C 污染农田土壤治理中，粉 葛 (用作葛粉 对 ) C 污染农田土壤修复具有应用价值。
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关键词 粉葛；镉；污染程度；富集特征；生物量
中图分类号：X53 文章编号：1674-991X（2022）05-1626-07 doi：10.12153/j.issn.1674-991X.20210271
Accumulation characteristics of cadmium in farmland soil by Pueraria thomsonii
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LIN Xiaobing , WU Lin , ZHOU Lijun , HUANG Qianru , LIU Shaohua ,
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CHEN Feng , OUYANG Guoping , ZHANG Qiumei 2*
1.National Engineering and Technology Research Center for Red Soil Improvement, Jiangxi Institute of Red Soil
2.Xinyu Institute of Agricultural Science, Jiangxi Province
Abstract The selection of rich plants with high growth, high biomass, and high economic value is a new
breakthrough in the bioremediation of heavy metals. To study the accumulation characteristic of cadmium (Cd) by
Pueraria thomsonii in farmland soil, field experiments were conducted to investigate Cd contents in tuber (radix
pueraria and arrowroot), basal part of stem, main vine, lateral branch, and leaf of Pueraria thomsonii under three
pollution levels. The results showed that Cd contents in different parts of Pueraria thomsonii were lateral branch
(8.96 mg/kg) > main vine (6.85 mg/kg) > leaf (5.22 mg/kg) > basal part of stem (2.80 mg/kg) > radix pueraria (1.36
mg/kg)> tuber (1.21 mg/kg)> arrowroot (0.16 mg/kg). Cd contents increased with the increase of soil pollution,
showing that Cd contents in medium and high pollution were significantly higher than in low pollution (P < 0.05).
Except for tuber, the accumulation coefficient of Cd in other parts of the plant was higher than 1 (1.09-8.65), and the
transport coefficient was 2.59-8.98. The distribution rates of Cd content in various parts of Pueraria thomsonii were
as follows: lateral branch (35.64%-43.81%) > main vine (21.55%-25.49%) > leaf (15.40%-23.63%) > tuber (7.03%-
9.94%) > basal part of stem (5.99%-9.57%). The biomass in various parts of Pueraria thomsonii was tuber > lateral
branch > leaf > main vine > basal part of stem. The removal amount of Cd increased with the pollution level, which
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was high pollution (45.39 g/hm ) > medium pollution (39.96 g/hm ) > low pollution (16.56 g/hm ). In general, Cd
contents in various parts of Pueraria thomsonii were significantly positively correlated with soil organic matter,
available Cd, and total Cd, but negatively correlated with soil pH. In the treatment of Cd contaminated farmland soil,

收稿日期：2021-06-28
基金项目：江西省重大科技研发专项（20194ABC28010）
作者简介：林小 兵 (1992—)，男，助理研究员，硕士，主要从事土壤资源与环境生态研究，linxiaobing14@mails.ucas.ac.cn
* 责任作者：张秋 梅 (1978—)，女，农艺师，主要从事农作物栽培研究，570708177@qq.com