不同有机物料与粘土矿物配施对新垦水田土壤有机碳积累的影响  

Effects of Combined Application of Different Organic Materials and Clay Minerals on Accumulation of Organic Carbon in Newly Cultivated Paddy Soils

作　　者：尹献远 张鑫 徐秋桐[2] 章明奎[2] YIN Xianyuan;ZHANG Xin;XU Qiutong;ZHANG Mingkui(Beautiful Rural Construction Center of Quzhou,Quzhou Zhejiang 324003;College of Environmental and Resource Sciences,Zhejiang University,Hangzhou 310058)

机构地区：[1]衢州市美丽乡村建设中心,浙江衢州324003 [2]浙江大学环境与资源学院,杭州310058

出　　处：《农学学报》2025年第3期51-59,共9页Journal of Agriculture

基　　金：浙江省“尖兵”“领雁”研究攻关计划项目“新垦土壤肥力提升技术—浙江省新垦红壤水田高效熟化技术研究与示范”(2022C02036)。

摘　　要：本研究旨在探究不同来源有机物料和粘土矿物配合施用对新垦水田土壤有机质的提升效果。选取浙江省红砂田和黄泥田等2种不同质地新垦红壤水田,采用室内模拟培养的方法,探讨了不同有机物料在新造红壤水田中的矿化特征,分析了不同有机物料组合对土壤有机碳积累与组分的影响及有机—矿物配施对新造水田土壤中有机碳积累的影响。结果表明:不同有机物料在土壤中的矿化率不同,施用生物质炭、风化煤腐殖酸、泥炭、树枝堆肥有利于土壤有机碳的积累,施用生物有机肥有利于提高土壤微生物生物量,以生物质炭—风化煤—生物有机肥、生物质炭—树枝堆肥—生物有机肥和泥炭—秸秆—生物有机肥等3种有机物料组合较佳。不同比例有机物料组合对土壤中有机碳积累影响的研究表明,生物质炭(2/5)+风化煤腐殖酸(1/5)+生物有机肥(2/5)、生物质炭(2/5)+树枝堆肥(1/5)+生物有机肥(2/5)和泥炭(2/5)+秸秆(1/5)+生物有机肥(2/5)等3种配比方案对新造水田土壤有机碳质量的全面提升较为合适。在施用组合有机物料的同时,施用蒙脱石于砂壤质新造水田有利于土壤水稳定性团聚体的提高,同时可促进有机碳和微生物生物量碳共同提升,增加土壤有机碳的稳定性。To understand the effects of combined application of organic materials with different sources and clay minerals on the improvement of soil organic matter in newly reclaimed paddy fields,two newly reclaimed red soil paddy fields with different textures,including paddy fields on red sandstone soil and paddy field on yellowish red soil in Zhejiang Province,were selected to explore the mineralization characteristics of different organic materials in newly reclaimed red soil paddy fields by indoor simulation cultivation.The effects of different organic material combination application on soil organic carbon accumulation and composition,as well as the effects of organic materials-clay mineral combination application on organic carbon accumulation in the soils were analyzed.The results showed that the mineralization rate of different organic materials in the soils was different.The application of biochar,weathered coal humic acid,peat and branch compost was conducive to the accumulation of soil organic carbon,and the application of biological manure was conducive to improving soil microbial biomass.The combination of biochar-weathered coal-biological manure,biochar-branch compost-biological manure or peat-straw-biological manure was better for improvement of soil organic carbon.The study on the effects of organic material combinations in different proportions on the accumulation of organic carbon in the soils showed that three proportioning schemes,namely,biochar(2/5)+weathered coal humic acid(1/5)+biological manure(2/5),biochar(2/5)+branch compost(1/5)+biological manure(2/5),and peat(2/5)+straw(1/5)+biological manure(2/5),were more appropriate for the overall improvement of soil organic carbon quality in new paddy fields.At the same time of applying organic materials,the application of montmorillonite in new sandy loamy paddy field was conducive to the improvement of soil water stability aggregates,and could promote the joint improvement of organic carbon and microbial biomass carbon,and increase the stability of soil

关 键 词：新垦水田 有机碳数量与质量 提升 有机物料 粘土矿物 土壤团聚体 稳定性 微生物生物量 

分 类 号：S152.4[农业科学—土壤学]