| 不同配比复合材料对农田镉污染土壤的修复效果 |
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| 引用本文： | 陈树兰,许晨阳,耿增超,王强,祝乐,龚园,拓卫卫.不同配比复合材料对农田镉污染土壤的修复效果[J].环境科学,2019,40(12):5531-5539. |
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| 作者姓名： | 陈树兰 许晨阳 耿增超 王强 祝乐 龚园 拓卫卫 |
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| 作者单位： | 西北农林科技大学资源环境学院,农业部西北植物营养与农业环境重点实验室,杨凌712100;西北农林科技大学资源环境学院,农业部西北植物营养与农业环境重点实验室,杨凌712100;农业部农业环境重点实验室,北京100081 |
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| 基金项目： | 农业部农业生态环境保护项目（K3120217004）;西北农林科技大学"大学生创新训练计划"项目（201810712110） |
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| 摘 要： | 通过盆栽试验研究了3种不同配比复合材料SC(石灰+有机复混肥以2∶3配施)、LS(硫酸亚铁+石灰以1∶1配施)和LB(硫酸亚铁+生物炭以1∶1、1∶2、1∶3、1∶4和1∶5配施)在不同添加量下对土壤Cd的生物有效性、小麦各部位Cd累积分布及产量的影响.结果表明:①添加3种复合材料均显著降低了土壤有效态Cd含量,降幅分别为50. 2%～81. 8%(SC)、29. 4%～48. 1%(LS)和18. 7%～42. 2%(LB);添加3种复合材料显著提高了土壤pH值,增幅分别为1. 37～2. 28(SC)、0. 41～0. 86(LS)和0. 14～0. 17(LB)个单位.②Cd在小麦各部位的累积分布规律为根叶茎颖壳籽粒,小麦各部位对Cd的转运能力表现为根颖壳茎叶.③与对照相比,添加0. 67%的SC显著增产56. 4%,添加0. 67%的LS显著增产51. 2%;添加复合材料LB可显著提高小麦产量,增幅为39. 6%～51. 2%.④相关分析表明,土壤pH值与土壤有效态Cd、小麦各部位Cd含量呈显著负相关关系;土壤有效态Cd含量与小麦各部位Cd含量呈显著正相关,相关系数分别为0. 711(籽粒)、0. 817(颖壳)、0. 593(茎)、0. 630(叶)和0. 622(根);同时,小麦各部位Cd含量之间也存在显著或极显著正相关关系.⑤综合比较,添加0. 93%的SC使土壤pH增幅最大为2. 28个单位;土壤有效态Cd含量降幅最大为81. 8%.因此,添加0. 93%的SC最适用于农田Cd污染土壤的修复治理.
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| 关 键 词： | 复合材料 Cd 有效性 小麦 累积分布 |
| 收稿时间： | 2019/4/25 0:00:00 |
| 修稿时间： | 2019/7/9 0:00:00 |
Remediation Effects of Different Composite Materials on Cadmium-Contaminated Farmland Soil |
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| CHEN Shu-lan,XU Chen-yang,GENG Zeng-chao,WANG Qiang,ZHU Le,GONG Yuan and TUO Wei-wei.Remediation Effects of Different Composite Materials on Cadmium-Contaminated Farmland Soil[J].Chinese Journal of Environmental Science,2019,40(12):5531-5539. |
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| Authors: | CHEN Shu-lan XU Chen-yang GENG Zeng-chao WANG Qiang ZHU Le GONG Yuan and TUO Wei-wei |
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| Institution: | Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China;Key Laboratory for Agricultural Environment, Ministry of Agriculture, Beijing 100081, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China;Key Laboratory for Agricultural Environment, Ministry of Agriculture, Beijing 100081, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China,Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China and Key Laboratory of Plant Nutrition and Agri-environment in Northwest China, Ministry of Agriculture, College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China |
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| Abstract: | |
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| Keywords: | composite material cadmium availability wheat cumulative distribution |
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