Heavy Metal Passivation Technology for Farmland Soil Health: Research and Application Trend

doi:10.11923/j.issn.2095-4050.cjas2020.03.006

Abstract

Abstract:

Affected by factors such as input of agricultural materials, solid waste dumping, sewage irrigation and atmospheric deposition, problems such as farmland soil degradation and agricultural product safety are becoming more and more serious. Heavy metal pollution seriously threatens human health through the food chain and has become one of the key issues in the field of agricultural environment in China. According to the status quo of heavy metal pollution in farmland in China, from the perspective of the organic and inorganic passive materials and soil passivation health technology, we analyzed the health restoration technology of heavy metal pollution in farmland soil, and proposed the main key bottlenecks in the current soil remediation of heavy metals in farmland, and looked forward to the development trend from organic and inorganic combined with passivation, green agricultural input, and soil quality improvement, which could provide a theoretical and technical basis for ecological control of soil heavy metal stress, the recycling of farmland waste and sustainable development of soil health.

Key words: Farmland Heavy Metals, Passive Material, Soil Health, Ecological Restoration, Application Trend

CLC Number:

S153

Shun’ao Liu, Hao Wu, Junming Hu, Junhui Zhang, Xiaodan Jin, Tingting Li. Heavy Metal Passivation Technology for Farmland Soil Health: Research and Application Trend[J]. Journal of Agriculture, 2020, 10(3): 6-11.

Figures/Tables 1

References 44

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修复方法	优点	不足
农业工程修复技术	修复效果明显,治理彻底	修复的成本高,周期长
土壤微生物修复技术	廉价、就地修复,减少土壤扰动, 生态、社会、经济效益高	菌株的筛选及微生物应用技术不成熟
农田农艺修复技术	对土壤不会造成污染,生态、社会、经济效益高	重金属低积累植物种类少,仅对一种或几种重金属有效, 难以对重金属复合污染起作用
农田多模式联合修复技术	综合性强,修复全面	操作复杂,修复投入成本高

修复方法	优点	不足
农业工程修复技术	修复效果明显,治理彻底	修复的成本高,周期长
土壤微生物修复技术	廉价、就地修复,减少土壤扰动, 生态、社会、经济效益高	菌株的筛选及微生物应用技术不成熟
农田农艺修复技术	对土壤不会造成污染,生态、社会、经济效益高	重金属低积累植物种类少,仅对一种或几种重金属有效, 难以对重金属复合污染起作用
农田多模式联合修复技术	综合性强,修复全面	操作复杂,修复投入成本高