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| Agricultural non-point source pollution nitrogen load reduction strategy and technology of nutrient reusing in agricultural fields to replace fertilizer |
| Received:July 05, 2017 |
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| KeyWord:agricultural non-point source pollution;nitrogen load;nutrient reusing;replacement of chemical fertilizer |
| Author Name | Affiliation | E-mail | | XUE Li-hong | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
Key laboratory of Agro-Environment in downstream of Yangtze River Plain, Ministry of Agriculture, Nanjing 210014, China | | | HE Shi-ying | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
Key laboratory of Agro-Environment in downstream of Yangtze River Plain, Ministry of Agriculture, Nanjing 210014, China | | | DUAN Jing-jing | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
Key laboratory of Agro-Environment in downstream of Yangtze River Plain, Ministry of Agriculture, Nanjing 210014, China | | | ZHANG Zhi-yong | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
Key laboratory of Agro-Environment in downstream of Yangtze River Plain, Ministry of Agriculture, Nanjing 210014, China | | | YANG Lin-zhang | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China
Key laboratory of Agro-Environment in downstream of Yangtze River Plain, Ministry of Agriculture, Nanjing 210014, China | Lzyang@issas.ac.cn |
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| Abstract: |
| The effective reduction of agricultural non-point source nitrogen pollution load is the key to improve water environmental quality,and it is also one of the hot issues in the world.Nitrogen is a pollutant when discharged into the water,but it is an essential macro-nutrient for crops.Therefore,a strategy of reusing the nitrogen from agricultural non-point source pollution as a nutrient in the agricultural system to replace chemical fertilizer was put forward in this paper.Then the technical approaches to reduce the N load from agricultural non-point source pollution based on this strategy were introduced,including the direct irrigation with the polluted water into farmland,using the aquatic plants to absorb the nitrogen then produce organic fertilizer and apply to the farmland,using the environmental material to adsorb the nitrogen and recycled into farmland.The shortcomings of the current research and future development direction were also discussed. |
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