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《Soil and Fertilizer Sciences in China》 2015-01
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Effect of biochar on soil properties and yield and quality of tobacco

CHEN Min;DU Xiang-ge;College of Agriculture and Biotechnology,China Agriculture University;  
A field experiment was designed to study the effects of different amount of biochar on soil chemical properties,yield and quality of flue-cured tobacco. The results showed that biochar could significantly improve soil organic matter content.When 6 000 kg / hm2 and 9 000 kg / hm2 biochar were applied,the soil organic matter contents increased by 19. 8% and 26. 1%respectively. Adding biochar could also increase the nutrient content of the soil,the soil total nitrogen,available nitrogen,available phosphorous,and available potassium were increased by 20. 2%,26. 5%,20. 0% and 22. 4% after 6 000 kg / hm2 biochar was applied. At the same time,biochar application increased soil microorganisms,especially nitrogen-fixing bacteria,phosphorous bacteria,potassium bacteria,which were improved by 43. 9%,35. 7% and 16. 1% respectively. The yield and quality of tobacco were both increased significantly after adding biochar. It was concluded that 6 000 kg / hm2 was the optimal application rate to improve soil properties and tobacco quality.
【Fund】: 中国烟草总公司云南省公司科技计划项目“基于玉溪卷烟品牌需求的绿色生态优质烟叶的研究与开发”(2012YN13)
【CateGory Index】: S141;S572
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