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| Effects of Bamboo Biochar on Coastal Saline Soils of Chongming Island, Shanghai |
| Received:July 04, 2014 |
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| KeyWord:bamboo biochar;saline soil improvement;pakchoi;biomass;quality |
| Author Name | Affiliation | E-mail | | ZHANG Rui | School of Agriculture and Biology, Shanghai Jiao Tong University
Key Laboratory of Urban Agriculture(South), Ministry of Agriculture, Shanghai 200240, China | | | YANG Hao | School of Agriculture and Biology, Shanghai Jiao Tong University
Key Laboratory of Urban Agriculture(South), Ministry of Agriculture, Shanghai 200240, China | | | ZHANG Fu-rong | School of Agriculture and Biology, Shanghai Jiao Tong University
Key Laboratory of Urban Agriculture(South), Ministry of Agriculture, Shanghai 200240, China | | | TANG Dong-mei | School of Agriculture and Biology, Shanghai Jiao Tong University
Key Laboratory of Urban Agriculture(South), Ministry of Agriculture, Shanghai 200240, China | | | JIANG Hong | Tony's Farm, Shanghai 200240, China | | | CAI Bao-song | School of Agriculture and Biology, Shanghai Jiao Tong University
Key Laboratory of Urban Agriculture(South), Ministry of Agriculture, Shanghai 200240, China | czstl@sjtu.edu.cn | | HUANG Dan-feng | School of Agriculture and Biology, Shanghai Jiao Tong University
Key Laboratory of Urban Agriculture(South), Ministry of Agriculture, Shanghai 200240, China | hdf@sjtu.edu.cn |
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| Abstract: |
| A greenhouse pot trial was conducted to evaluate the changes in salinity and other physicochemical properties of soil, and biomass and quality of pakchoi after bamboo biochar additions. Four treatments, bamboo biochar, organic fertilizer, organic fertilizer plus bamboo biochar and control(no fertilizer or biochar added), were employed. The electrical conductivity(EC) of soil was decreased significantly by bamboo biochar amendments, but increased by organic fertilizer. Organic fertilizer plus bamboo biochar did not significantly affect EC. Applying bamboo biochar significantly increased the total carbon content, organic matter, available phosphorus and available potassium in soil. On the contrary, biochar additions significantly decreased total soluble nitrogen, especially ammonium nitrogen and nitrate nitrogen. Soil pH and moisture did not vary among treatments. Bamboo biochar profoundly increased pakchoi height, biomass and soluble sugar contents, and improved its overall quality, but significantly decreased nitrate concentration in edible parts. These results show that applying bamboo biochar could improve coastal saline soil and in turn increase pakchoi yield and quality. |
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