| Effects of biochar on saline soil improvement |
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| DOI：10.7606/j.issn.1000-7601.2013.02.14 |
| Key Words: biochar saline soil improvement |
| Author Name | Affiliation | | ZHANG Wen | College of Resources and Environment, Northwest A&F University / Key Laboratory for Plant Nutrient and Agricultural
Environment in Northwest China, Ministry of Agriculture, Yangling, Shannxi 712100, China | | GENG Zengchao | College of Resources and Environment, Northwest A&F University / Key Laboratory for Plant Nutrient and Agricultural
Environment in Northwest China, Ministry of Agriculture, Yangling, Shannxi 712100, China | | CHEN Xinxiang | College of Resources and Environment, Northwest A&F University / Key Laboratory for Plant Nutrient and Agricultural
Environment in Northwest China, Ministry of Agriculture, Yangling, Shannxi 712100, China | | GAO Haiying | College of Resources and Environment, Northwest A&F University / Key Laboratory for Plant Nutrient and Agricultural
Environment in Northwest China, Ministry of Agriculture, Yangling, Shannxi 712100, China |
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| Abstract: |
| By planting wheat and proso continually, a pot experiment was conducted to evaluate the changes of basic nutrient content, pH value, cation exchange capacity, water-soluble salts and other salt ions after adding different amount of biochar to the saline soil. The results showed that: with the amount of biochar increasing, the content of organic carbon in the saline soil was significantly improved, while the mineral nitrogen, available phosphorus and available potassium changed very little; the pH value was slightly lowered, but there was no significant differences among the treatments; the CEC increased substantially; the content of soluble salts decreased significantly, especially for Na+, K+, Mg2+
and Ca2+, and the content of Cl- and SO42- also decreased remark
ably. In conclusion, the saline soil was improved effectively by the biochar. |
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