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| Biological Effects of Corncob-derived Biochar on Soybean Plants |
| Received:August 31, 2014 |
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| KeyWord:corncob;biochar;soybean;biological effects |
| Author Name | Affiliation | E-mail | | ZHANG Wei-ming | College of Agronomy, Shenyang Agricultural University/Biochar Engineering Technology Research Center of Liaoning Province, Shenyang 110866, China | | | GUAN Xue-chao | College of Agronomy, Shenyang Agricultural University/Biochar Engineering Technology Research Center of Liaoning Province, Shenyang 110866, China | | | HUANG Yu-wei | College of Agronomy, Shenyang Agricultural University/Biochar Engineering Technology Research Center of Liaoning Province, Shenyang 110866, China | | | SUN Da-quan | College of Agronomy, Shenyang Agricultural University/Biochar Engineering Technology Research Center of Liaoning Province, Shenyang 110866, China | | | MENG Jun | College of Agronomy, Shenyang Agricultural University/Biochar Engineering Technology Research Center of Liaoning Province, Shenyang 110866, China | | | CHEN Wen-fu | College of Agronomy, Shenyang Agricultural University/Biochar Engineering Technology Research Center of Liaoning Province, Shenyang 110866, China | wfchen5512@126.com |
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| Abstract: |
| Biochars applied to soil have shown to enhance plant growth. However, the biological effects of biochar generated from corncob on soybean are poorly understood. In this study, the structure and properties of corncob-biochar produced by a novel carbonization technology was studied. The effect of corncob-biochar on the growth of soybean(Glycine max L. Merr.) was also evaluated in a field experiment in the Northeast China. Compared to corncob, the corncob derived biochar had 5.54-fold greater total pore volume, 3.74-fold larger specific surface area, 1-fold higher pH, 5.03-fold more fixed carbon, and 0.26-fold ampler ash content, indicating that this biochar had rich microporous structures. Applications of corncob-biochar increased plant height, dry matter accumulation, and photosynthetic and nutritional physiological processes of soybean. Biochar additions also improved the absorption of nitrogen, phosphorus, and potassium by plants. The biochar significantly enhanced the yield and quality of soybean. The average soybean yield was 10.98% higher at two higher rates of biochar(1500 kg·hm-2 and 3000 kg·hm-2) than that of the control. Taken together, these results suggest that corncob-biochar has good physical and chemical characteristics, and could be a good agricultural material to be used in soybean production in Northeast China. |
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