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| Probes of prevention and control of farmland pollution by cadmium & arsenic and crop production safety |
| Received:November 29, 2016 |
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| KeyWord:farmland;cadmium;arsenic;pollution prevention and control;crops' production safety;VIP+n technical mode;VIRL technical mode |
| Author Name | Affiliation | E-mail | | ZHOU Li | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
Key Laboratory of Agro-Environmental Pollution Control and Prevention, Ministry of Agriculture, Tianjin 300191, China
College of Land and Environment, Shenyang Agricultural University, Shenyang 110866, China | | | ZHENG Xiang-qun | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
Key Laboratory of Agro-Environmental Pollution Control and Prevention, Ministry of Agriculture, Tianjin 300191, China | | | DING Yong-zhen | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
Key Laboratory of Agro-Environmental Pollution Control and Prevention, Ministry of Agriculture, Tianjin 300191, China | dingyongzhen@caas.cn | | HUANG Hong-kun | Rural Energy & Environment Agency, Ministry of Agriculture, Beijing 100125, China | | | ZHENG Shun-an | Rural Energy & Environment Agency, Ministry of Agriculture, Beijing 100125, China | | | SHI Rong-guang | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
Key Laboratory of Agro-Environmental Pollution Control and Prevention, Ministry of Agriculture, Tianjin 300191, China | | | LI Xiao-hua | Rural Energy & Environment Agency, Ministry of Agriculture, Beijing 100125, China | | | FENG Ren-wei | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
Key Laboratory of Agro-Environmental Pollution Control and Prevention, Ministry of Agriculture, Tianjin 300191, China | | | WANG Rui-gang | Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin 300191, China
Key Laboratory of Agro-Environmental Pollution Control and Prevention, Ministry of Agriculture, Tianjin 300191, China | |
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| Abstract: |
| Farmland pollution by cadmium and arsenic, at present, is one of the major environmental problems confronting agricultural production. In this paper, the situation of farmland pollution by cadmium and arsenic and its risks to health are reviewed and the key technologies to obstruct and control cadmium and arsenic from being absorbed by crops are observed, such as agricultural input control, water management, soil passivant regulation, leaf surface conditioning, selection and substitute planting of low absorption crop varieties, and removal of straws. Combining the Soil Pollution Prevention Action Plan, the following ideas are proposed in this paper regarding the production safety on cadmium- and arsenic- polluted farmland:(1)determine an appropriate technology for safe production according to the farmland pollution index and (2) control and prevent pollution in comprehensive ways using integrated agronomic measures. In this paper, the control and prevention of farmland pollution by cadmium and arsenic is explained, and regarding crop production safety, a technical mode, VIRL(Variety-Input and Irrigation-Root zone and Removal of Straw-Leaf blade), is presented. This mode highly integrates source control(agricultural inputs), process control(crops' native characteristics of cadmium and arsenic absorption, various elements in both underground and aboveground parts affecting cadmium and arsenic absorption), and terminal control of farmland. Then, a key(joint) technical regulation, strict or loose, is carried out based on the farmland pollution level, thus securing safe production on cadmium- and arsenic- polluted farmland. |
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