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文章摘要
生物炭基缓释肥的制备及其对土壤理化性质的影响
Preparation of Biochar Based Slow release Fertilizer and Its Effect on Soil Physicochemical Properties
  
DOI:
中文关键词: 生物炭  缓释肥  淋溶试验  缓释性能  理化性质  土壤
英文关键词: Biochar  Slow-release fertilizer  Leaching test  Slow-release performance  Physicochemical properties  Soils
基金项目:国家自然科学青年基金资助项目(22006121)
作者单位
宋旭燕 中国电建集团成都勘测设计研究院有限公司 
罗鹤松 西南交通大学地球科学与环境工程学院 
杨帅 西南交通大学地球科学与环境工程学院 
王东梅 西南交通大学地球科学与环境工程学院 
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中文摘要:
      通过淋溶试验分析生物炭热解温度、生物炭与尿素比例、粘结剂含量对生物炭基缓释肥缓释性能的影响,采用土壤培育试验研究生物炭基缓释肥对土壤理化性质的影响。结果表明,600 ℃下热解而成的生物炭缓释性能优于300 ℃下热解形成的生物炭;生物炭添加比例和粘结剂含量的增加能提升生物炭基缓释肥的缓释性能;生物炭基缓释肥的加入可降低培育土壤的容重,增大土壤的饱和导水率,提高土壤pH值和土壤有机质含量。
英文摘要:
      The effects of biochar pyrolysis temperature, ratio of biochar to urea and binder content on the slow-release performance of biochar based slow-release fertilizer were analyzed by leaching test, and the effects of biochar based slow-release fertilizer on soil physicochemical properties were studied by soil cultivation experiment. The results showed that the slow-release performance of biochar pyrolyzed at 600 ℃ was better than that at 300 ℃. The increase of biochar addition ratio and binder content could improve the slow-release performance of biochar based slow-release fertilizer. The addition of biochar based slow-release fertilizer could reduce the bulk density of cultivated soil, increase saturated water conductivity, pH value and organic matter content of the soil.
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