南方喀斯特矿区稻田土壤镉污染的原位营养修复效果研究

doi:10.11924/j.issn.1000-6850.casb2023-0804

中国农学通报 ›› 2024, Vol. 40 ›› Issue (23): 75-80.doi: 10.11924/j.issn.1000-6850.casb2023-0804

• 资源·环境·生态·土壤·气象 • 上一篇下一篇

南方喀斯特矿区稻田土壤镉污染的原位营养修复效果研究

赵茹¹^,²(), 邵国胜³, 胡钧铭²(), 蒋鑫¹^,², 刘顺翱¹^,², 李婷婷², 韦翔华¹, 刘超¹^,²

¹ 广西大学农学院，南宁 530004
² 广西农业科学院农业资源与环境研究所/广西耕地保育重点实验室，南宁 530007
³ 中国水稻研究所，杭州 311401

收稿日期:2023-11-12 修回日期:2024-04-02 出版日期:2024-08-09 发布日期:2024-08-09
通讯作者:
胡钧铭，男，1974年出生，江苏宿迁人，研究员，博士，主要从事农业有机资源利用与生境调控及逆境生态研究工作。通信地址：530007 广西壮族自治区南宁市西乡塘区大学东路174号，Tel：0771-3245043，E-mail：jmhu06@126.com。
作者简介:
赵茹，女，1998年出生，山西晋城人，硕士研究生，研究方向：稻田土壤重金属修复技术与应用推广。通信地址：530007 广西壮族自治区南宁市西乡塘区大学东路174号，Tel：0771-3245043，E-mail：594485380@qq.com。
基金资助:
农业农村部产地环境污染防控重点实验室开放基金“广西宜州镉污染稻田安全利用技术异地验证与定位监测”(19cdhj-16); 广西农业科学院创新团队项目“农业逆境生态调控技术研究”(桂农科2021YT040)

Preliminary Study on Effect of Cadmium Contaminated in Paddy Fields of Karst Mining Area In-situ Remediation

ZHAO Ru¹^,²(), SHAO Guosheng³, HU Junming²(), JIANG Xin¹^,², LIU Shun'ao¹^,², LI Tingting², WEI Xianghua¹, LIU Chao¹^,²

¹ College of Agriculture, Guangxi University, Nanning 530004
² Agricultural Resource and Environment Research Institute, Guangxi Academy of Agricultural Sciences/Guangxi Key Laboratory of Arable Land Conservation, Nanning 530007
³ China National Rice Research Institute, Hangzhou 311401

Received:2023-11-12 Revised:2024-04-02 Published:2024-08-09 Online:2024-08-09

摘要/Abstract

摘要：

针对南方喀斯特矿区的镉污染问题，本研究旨在评估不同营养修复剂对污染稻田土壤的原位修复效果。通过设置3个处理组：对照组（T₁，不添加修复剂）、无机营养修复剂组（T₂）及有机无机营养修复剂组（T₃），利用梯度扩散薄膜法（DGT）分析了水稻根际土壤中镉的形态变化和生物有效性，并探讨了这些变化与土壤质量之间的相关性。研究结果显示：（1）营养修复剂显著影响了稻田土壤中镉的形态分布，促进了可交换态镉向残渣态镉的转化。具体来看，与对照组相比，T₂、T₃分别降低了可交换态镉含量占比14.71%、5.88%，增加了可还原态镉含量占比8.51%、6.38%。虽然T₃对残渣态镉含量的影响不明显，但T₂使其增加了10%。（2）T₂、T₃ 2种营养修复剂均显著降低了水稻收获期根际土壤中镉的生物有效性，T₂、T₃分别降低了54.21%、50.47%。（3）与对照组比较，T₂、T₃显著提升了土壤的有机质（7.37%、7.50%）、pH（5.29%、17.06%）和阳离子交换量（12.24%、11.10%）。营养型修复剂利于矿区镉污染稻田土壤修复并实现土壤质量同步提升。

关键词: 隔污染稻田, 原位修复, Cd形态转化, 营养修复剂, 喀斯特矿区

Abstract:

There is an urgent need for cadmium pollution transfer risk and soil nutrient restoration technology in rice field in karst mining area of South China. To explore the effect of nutritional passivator on cadmium (Cd) contaminated paddy soil in mining areas, and to clarify its effect on the morphological transformation, bioavailability and soil quality of cadmium in the rhizosphere soil of rice, the in-situ remediation experiment of paddy soil was carried out. Three treatments were set up, including no passivator (T₁), inorganic nutritional passivator (T₂) and organic-inorganic nutritional passivator (T₃). The gradient diffusion film (DGT) technique was used to study the bioavailability of Cd and Cd transformation in rhizosphere soil of the paddy field, and the biological correlation between Cd transformation, bioavailability of Cd and soil quality was evaluated in rhizosphere soil of the paddy field. The results showed that: (1) nutritional passivator affected the ratio of cadmium formation in cadmium-contaminated paddy soil. Nutritional passivator could promote the transformation of exchangeable cadmium to residual cadmium in soil. Nutritional passivator reduced the proportion of exchangeable cadmium content. Compared with T₁ (control), the T₂ and T₃ decreased the proportion of exchangeable cadmium content in soil by 14.71% and 5.88%, respectively. Nutritional passivator increased the proportion of reducible cadmium content. Compared with T₁ (control), the T₂ and T₃ increased the proportion of reducible cadmium content in soil by 8.51% and 6.38%, respectively. Nutritional passivator increased the proportion of residual cadmium content. Compared with T₁ (control), the T₂ increased the proportion of residual cadmium content in soil by 10%, T₃ had no obvious changes. (2) The bioavailability of Cd in rhizosphere soil of Cd-polluted paddy fields was reduced by treatment with nutritional passivator. Compared with T₁ (control), the T₂ and T₃ treatments decreased bioavailability significantly by 54.21% and 50.47% at harvest stages. (3) Nutritional passivator improved soil quality in soil of Cd-polluted paddy fields. Compared with T₁ (control), the T₂ and T₃ increased soil organic matter, pH and cation exchange capacity by 7.37%, 7.50% and 5.29%, 17.06% and 12.24%, 11.10%, respectively. Nutritional passivator could restore polluted soil and improve soil quality synchronously.

Key words: contaminated paddy fields, in-situ immobilization, Cd form transformation, nutritional passivator, karst mining area

赵茹, 邵国胜, 胡钧铭, 蒋鑫, 刘顺翱, 李婷婷, 韦翔华, 刘超. 南方喀斯特矿区稻田土壤镉污染的原位营养修复效果研究[J]. 中国农学通报, 2024, 40(23): 75-80.

ZHAO Ru, SHAO Guosheng, HU Junming, JIANG Xin, LIU Shun'ao, LI Tingting, WEI Xianghua, LIU Chao. Preliminary Study on Effect of Cadmium Contaminated in Paddy Fields of Karst Mining Area In-situ Remediation[J]. Chinese Agricultural Science Bulletin, 2024, 40(23): 75-80.

图/表 5

参考文献 27

[1]	赵鑫娜, 杨忠芳, 余涛. 矿区土壤重金属污染及修复技术研究进展[J]. 中国地质, 2023, 50(1):84-101.
[2]	张剑, 孔繁艺, 卢升高. 无机钝化剂对镉污染酸性水稻土的修复效果及其机制[J]. 环境科学, 2022, 43(10):4679-4686.
[3]	刘家仪. 广西粮食生产发展现状分析及对策探讨[J]. 中国农技推广, 2020, 36(11):19-21.
[4]	陈桂芬, 雷静, 黄雁飞, 等. 广西稻田镉污染状况及硅对稻米镉的消减作用[J]. 南方农业学报, 2015, 46(5):772-776.
[5]	魏赟. 矿山开采的生态环境效应与其生态恢复的相关研究[J]. 环境与发展, 2020, 32(7):177-178.
[6]	曹心德, 魏晓欣, 代革联, 等. 土壤重金属复合污染及其化学钝化修复技术研究进展[J]. 环境工程学报, 2011, 5(7):1441-1453.
[7]	刘顺翱, 吴昊, 胡钧铭, 等. 农田重金属土壤健康钝化技术研究及应用趋势[J]. 农学学报, 2020, 10(3):6-11. doi: 10.11923/j.issn.2095-4050.cjas2020.03.006
[8]	胡钧铭, 夏旭, 张野, 等. 快腐蚕沙对水稻生境及安全生长的影响[J]. 广西植物, 2017, 37(8):993-999.
[9]	LAIRD D A, FLEMING P, DAVIS D D, et al. Impact of biochar amendments on the quality of a typical Midwestern agricultural soil[J]. Geoderma, 2010, 158(3-4):443-449.
[10]	王洋, 刘景双, 王金达, 等. 土壤pH对冻融黑土重金属Cd赋存形态的影响[J]. 农业环境科学学报, 2008(2):574-578.
[11]	廖敏, 黄昌勇. 黑麦草生长过程中有机酸对镉毒性的影响[J]. 应用生态学报, 2002(1):109-112.
[12]	AHMAD M, RAJAPAKSHA A U, LIM J E, et al. Biochar as a sorbent for contaminant management in soil and water: A review[J]. Chemosphere, 2014, 99:19-33. doi: 10.1016/j.chemosphere.2013.10.071 pmid: 24289982
[13]	纪雄辉, 梁永超, 鲁艳红, 等. 污染稻田水分管理对水稻吸收积累镉的影响及其作用机理[J]. 生态学报, 2007(9):3930-3939.
[14]	邓林, 李柱, 吴龙华, 等. 水分及干燥过程对土壤重金属有效性的影响[J]. 土壤, 2014, 46(6):1045-1051.
[15]	ZHU L, ZHAO N, TONG L, et al. Characterization and evaluation of surface modified materials based on porous biochar and its adsorption properties for 2, 4-dichlorophenoxyacetic acid[J] Chemosphere, 2018, 210:734-744.
[16]	CHO H, WEPASNICK K, SMITH B A, et al. Sorption of aqueous Zn [II] and Cd [II] by multiwall carbon nanotubes: the relative roles of oxygen-containing functional groups and graphenic carbon[J]. Langmuir, 2010, 26(2):967-981.
[17]	CHEN S, XU M, MA Y, et al. Evaluation of different phosphate amendments on availability of metals in contaminated soil[J]. Ecotoxicology and environmental safety, 2007, 67(2):278-285. pmid: 16887186
[18]	GRAY C W, DUNHAM S J, DENNIS P G, et al. Field evaluation of in situ remediation of a heavy metal contaminated soil using lime and red-mud[J]. Environmental pollution, 2006, 142(3):530-539. doi: 10.1016/j.envpol.2005.10.017 pmid: 16321462
[19]	RINKLEBE J, SHAHEEN S M, FROHNE T. Amendment of biochar reduces the release of toxic elements under dynamic redox conditions in a contaminated floodplain soil[J]. Chemosphere, 2016, 142:41-47. doi: 10.1016/j.chemosphere.2015.03.067 pmid: 25900116
[20]	ZHU Q, HUANG D, LIU S, et al. Flooding-enhanced immobilization effect of sepiolite on cadmium in paddy soil[J]. Journal of Soils and Sediments, 2012, 12:169-177.
[21]	BEIYUAN J, AWAD Y M, BECKERS F, et al. Mobility and phytoavailability of As and Pb in a contaminated soil using pine sawdust biochar under systematic change of redox conditions[J]. Chemosphere, 2017, 178:110-118. doi: S0045-6535(17)30374-0 pmid: 28319738
[22]	龚雪蛟, 秦琳, 刘飞, 等. 有机类肥料对土壤养分含量的影响[J]. 应用生态学报, 2020, 31(4):1403-1416.
[23]	邵孝侯, 胡霭堂, 秦怀英. 添加石灰、有机物料对酸性土壤镉活性的影响[J]. 南京农业大学学报, 1993(2):47-52.
[24]	徐蒙蒙, 涂春艳, 黄河, 等. 淹水条件下蚕沙复配材料对酸性水稻土中镉铅钝化的影响[J]. 环境工程学报, 2018, 12(4):1182-1189.
[25]	黎秋君, 黎大荣, 王英辉, 等. 3种有机物料对土壤理化性质和重金属有效态的影响[J]. 水土保持学报, 2013, 27(6):182-185.
[26]	杨祥波. 改良剂与有机物料结合对新开碱地稻田土壤性状的优化[J]. 河南农业科学, 2020, 49(5):88-96.
[27]	马良, 徐仁扣. 不同耕种年限红壤性水稻土理化性质的变化特征[J]. 土壤, 2010, 42(4):560-563.

	有机质/(g/kg)	阳离子交换量CEC/ (cmol/kg)	pH
T₁	57.37±0.15a	23.70±0.67b	5.86±0.02c
T₂	61.60±2.21a	26.60±0.40a	6.17±0.06b
T₃	61.67±0.73a	26.33±0.07a	6.86±0.06a

	有机质/(g/kg)	阳离子交换量CEC/ (cmol/kg)	pH
T₁	57.37±0.15a	23.70±0.67b	5.86±0.02c
T₂	61.60±2.21a	26.60±0.40a	6.17±0.06b
T₃	61.67±0.73a	26.33±0.07a	6.86±0.06a

影响因子	可交换态镉	可还原态镉	可氧化态镉	残渣态镉	有机质	阳离子交换量	土壤pH
可交换态镉	1
可还原态镉	-0.813^**	1
可氧化态镉	0.002	-0.459	1
残渣态镉	-0.467	0.071	-0.017	1
有机质	-0.178	0.398	-0.269	-0.233	1
阳离子交换量	-0.663	0.722^*	-0.289	0.187	0.704^*	1
土壤pH	-0.170	0.380	-0.404	-0.054	0.531	0.643	1

影响因子	可交换态镉	可还原态镉	可氧化态镉	残渣态镉	有机质	阳离子交换量	土壤pH
可交换态镉	1
可还原态镉	-0.813^**	1
可氧化态镉	0.002	-0.459	1
残渣态镉	-0.467	0.071	-0.017	1
有机质	-0.178	0.398	-0.269	-0.233	1
阳离子交换量	-0.663	0.722^*	-0.289	0.187	0.704^*	1
土壤pH	-0.170	0.380	-0.404	-0.054	0.531	0.643	1

影响因子	收获期Cd生物有效性	有机质	阳离子交换量	土壤pH
收获期Cd生物有效性	1
有机质	-0.534	1
阳离子交换量	-0.756^*	0.704^*	1
土壤pH	-0.493	0.531	0.643	1

南方喀斯特矿区稻田土壤镉污染的原位营养修复效果研究

Preliminary Study on Effect of Cadmium Contaminated in Paddy Fields of Karst Mining Area In-situ Remediation

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 5

参考文献 27

相关文章 2

编辑推荐

Metrics

本文评价

关于本刊

作者中心

审者中心

在线期刊

联系我们

[1]	孙旋辉, 蒋咏燚, 刘文婷, 郑尧, 陈家长, 邴旭文. 吉富罗非鱼养殖池塘集成调控技术配比研究[J]. 中国农学通报, 2021, 37(33): 148-152.
[2]	吕焕哲张建新. 粘土矿物原位修复Cd污染土壤的研究进展[J]. 中国农学通报, 2014, 30(12): 24-27.