摘要
将油页岩半焦进行碳化后生产出的矿物生物炭与秸秆生物炭进行理化性能对比分析,并在甘肃省马军坪、张掖、白银3地的试验田进行了相关应用试验。研究结果表明,矿物生物炭比表面积较大、孔径小、具有一定疏水性,与秸秆生物炭类似,含有较高的养分,作为土壤改良剂可在一定程度上提升土壤肥力,有利于改良土壤结构、透气性、透水性及保水能力,作为农业或其他工业产品原料安全可行;在碱性土壤中施用后,会对土壤酸碱度下降有一定的促进作用;增施矿物生物炭能有效提高土壤有机质、全氮、水溶性钙含量,可为矿物生物炭在甘肃省不同属性土壤改良、农田种植中规模化应用、构建高标准高质量农田提供理论基础。
A comparative analysis was conducted on the physical and chemical properties of mineral biochar prepared from carbonization of oil shale semi-coke and straw biochar,and relevant application experiments were conducted in three experimental fields in Majunping,Zhangye,and Baiyin.The results showed that mineral biochar had large specific surface area,small pore size and certain hydrophobicity.Similar to straw biochar,it contained high nutrients,and as a soil conditioner,it could improve soil fertility to a certain extent,and was beneficial to improve soil structure,air permeability,water permeability and water retention capacity,and it was safe and feasible as a kind of raw material for agricultural or other industrial products.After application in alkaline soil,it had a certain promoting effect on the decrease of soil pH.The application of mineral biochar can effectively increase the contents of soil organic matter,total nitrogen and water-soluble calcium,and lay a theoretical foundation for the large-scale application of mineral biochar in soil improvement with different properties and farmland planting,as well as for the construction of high-standard and high-quality farmland in Gansu.
作者
卢晓花
周存顺
朱应龙
张军良
LU Xiaohua;ZHOU Cunshun;ZHU Yinglong;ZHANG Junliang(Yaojie Coal and Electricity Group Corporation,Lanzhou,Gansu 730080,China;Gansu Jinneng Keyuan Industry and Trade Co.,Ltd.,Lanzhou,Gansu 730080,China)
出处
《中国煤炭》
北大核心
2024年第2期101-107,共7页
China Coal
关键词
油页岩半焦
矿物生物炭
理化指标
土壤改良剂
oil shale semi-coke
mineral biochar
physical and chemical indicators
soil conditioner
