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| Effects of Applications of Different Biochars on Nitrogen and Phosphorus Losses in Vegetable Soil |
| Received:July 16, 2015 |
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| KeyWord:biochar;nitrogen and phosphorus loss;vegetable soil;biomass raw material |
| Author Name | Affiliation | E-mail | | CHEN Chong-jun | School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China | | | LIU Feng-jun | Suzhou Academy of Agricultural Sciences, Suzhou 215155, China | 61300829@163.com | | FENG Yu | Solid Waste Pollution Control Division, Beijing Municipal Research Institute of Environmental Protection, Beijing 100037, China | | | MA Neng-kui | School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China | | | WANG Jian-fang | School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China | |
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| Abstract: |
| Biochar has potential to adsorb soil nutrients and thus may reduce nutrient losses to the water environment. In this study, nitrogen and phosphorus losses in vegetable soil amended with three different biochars were investigated. These three biochars were made from bamboo, rice straw and tobacco stem. The type and rate of biochar tended to impact vegetable biomass and soil water percolating capacity. However, applying biochars significantly reduced nitrogen and phosphorus losses. Total nitrogen(TN) and total phosphorus(TP) losses were reduced by 2.6%~19.4% and 9.1%~30.3% for bamboo charcoal, 5.5%~20.4% and 13.9%~19.0% for rice straw charcoal, and 4.1%~17.9% and 17.6%~28.7% for tobacco stem biochar, respectively. The reduction of TP loss was greater than that of TN loss in all treatments. The least losses of TN and TP were observed in soil amended with bamboo or tobacco stem biochars at a rate of 5%. |
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