改良剂对矿区复垦土壤机械稳定性团聚体和有机碳影响.docx

《应用与环境生物学报》 Chin J Appl Environ Biol Doi: 10.19675/ki.1006-687x.2020.12007 收稿日期 Received: 2020-12-03 接受日期 Accepted: 2021-03-18 国家重点联合基金项目（U1710255-4）资助 Supported by the Key Joint Foundation of China (U1710255-4) **通讯作者 Corresponding author (E-mail: fwh012@ 163.com) 改良剂对矿区复垦土壤机械稳定性团聚体及有机碳的影响 刘新梅 樊文华** 张 昊 田 剑 刘奋武 王改玲 山西农业大学资源环境学院 太谷 030801 摘 要 为探究不同改良剂对矿区复垦土壤结构及肥力的影响，在襄垣煤矿复垦区设置田间微区研究了施用改良剂6个月和1年时，泥炭和腐殖酸对复垦土壤机械稳定性团聚体分布及稳定性、土壤有机碳含量及土壤红外光谱特征的影响。结果显示，施用泥炭和腐殖酸6个月时大团聚（> 0.25 mm）含量增加，施用泥炭和腐殖酸1年时大团聚体含量减少，微团聚体（< 0.25 mm）含量增加。施用改良剂6个月时，泥炭和腐殖酸各处理土壤平均重量（MWD）和几何平均直径（GMD）均高于空白对照，均以5%腐殖酸处理最高，与空白对照相比分别增加了10.95%和22.43%；施用泥炭和腐殖酸1年时，泥炭各处理土壤MWD和GMD仍高于空白对照，腐殖酸各处理土壤MWD和GMD则均低于空白对照。施用泥炭和腐殖酸能够增加土壤总有机碳及各粒级团聚体有机碳含量。施用改良剂6个月及1年时均以5%腐殖酸处理土壤总有机碳含量最高，分别较空白对照增加了566.35%和502.59%。施用泥炭6个月和1年时土壤 > 0.25 mm大团聚体有机碳增量最大，而施用腐殖酸6个月和1年时土壤0.25-0.053 mm团聚体有机碳增量最大。本研究表明泥炭和腐殖酸能够促进大团聚的形成，增加团聚体的稳定性、土壤有机碳含量、碳水化合物、含氧官能团、多糖及取代芳香类物质，但施用改良剂1年时大团聚体含量和有机碳含量会减少，施用腐殖酸1年会降低复垦土壤团聚体稳定性。（图4表1参33）? 关键词 泥炭；腐殖酸；团聚体；有机碳含量；红外光谱特征 Effects of amendments on mechanical stability aggregates and organic carbon in reclaimed soil LIU Xinmei, FAN Wenhua**, ZHANG Hao, TIAN Jian, LIU Fenwu & WANG Gailing College of Resources and Environment, Shanxi Agricultural University, Taigu 030801, China Abstract In order to explore the effects of different amendments on the structure and fertility of reclaimed soil in mining area, a series of field microfield experiments were set in Xiangyuan reclaimed soil to study the effects of different proportion of peat and humic acid on the distribution and stability of mechanically stable aggregates, the content of soil organic carbon and the characteristics of soil infrared spectrum. Results showed that at 6 months of application of amendments, the content of macro-aggregates (> 0.25 mm) of each peat and humic acid treatment increased, however, the content of macro-aggregates decreased and the content of micro-aggregates increased of each peat and humic acid treatment at 1 year of application of