添加畜禽粪对秸秆田间条带堆腐土壤团聚体特征及有机碳的影响  

Effects of Adding Livestock Manure on Soil Aggregate Characteris⁃tics and Organic Carbon of Straw Strip Composting in Field

作　　者：李虎 吴景贵[1] LI Hu;WU Jinggui(College of Resources and Environment,Jilin Agricultural University,Changchun 130118,China)

机构地区：[1]吉林农业大学资源与环境学院,长春130118

出　　处：《吉林农业大学学报》2023年第1期61-68,共8页Journal of Jilin Agricultural University

基　　金：吉林省科技攻关项目(20190301018NY);国家重点研发计划项目(2018YFD0300203)。

摘　　要：为了明确秸秆田间条带原位堆腐最佳还田方式,以吉林省范家屯农业科技示范园黑土为研究对象,通过湿筛法,探讨秸秆添加不同畜禽粪田间条带堆腐还田对土壤团聚体分布及有机碳的影响。以玉米秸秆为供试材料,进行田间条带堆腐试验,对比秸秆条带堆腐无畜禽粪(ck)、秸秆条带堆腐+腐熟猪粪(STP)、秸秆条带堆腐+腐熟鸡粪(STC)对土壤团聚体的影响。结果表明:与ck处理相比,添加畜禽粪秸秆条带堆腐各处理影响土壤不同粒径团聚体的分布及有机碳的含量,增加了土壤团聚体平均质量直径和几何平均直径,降低了土壤不稳定团粒指数、土壤团聚体破坏率和土壤分形维数。添加畜禽粪秸秆条带堆腐各处理对土壤团聚体各粒级有机碳含量影响显著,土壤水稳性团聚体中以0.25~0.053 mm粒级团聚体有机碳含量最高。总体来说,玉米秸秆田间条带堆腐添加畜禽粪,提高了土壤团聚体有机碳含量、增加大团聚体含量,优化团聚体稳定性结构,其中,以秸秆条带堆腐添加鸡粪处理效果最佳,对土壤的物理性质有一定的改善作用,提高了土壤地力,该结果对指导东北地区黑土秸秆还田具有重要意义。The black soils of Agricultural Science and Technology Demonstration Park in Fanjiatun of Jilin province were used as experimental objects.In order to clarify the optimal reduction method for in-situ strip composting of straw,the effects of straw in-situ strip composting in the field combined application with different livestock and poultry manures on the distribution of soil aggregate and or⁃ganic carbon were studied by wet sieving methods.The corn stalks were used as the test materials,the field in-situ composting experiment was conducted to compare the effects of the three treatments on soil aggregates,including straw strip composting without livestock and poultry manure(ck),straw strip composting+decomposed pig manure(STP),straw strip composting+decomposed chicken ma⁃nure(STC).The results showed that the various treatments of straw in-situ strip composting adding livestock and poultry manure in the field affected the distribution of aggregates of different particle sizes and the content of organic carbon in the soil relative to ck,increased the average mass diameter and geometric average diameter of soil aggregates,and reduced the soil unstable aggregate index,the destruction rate of soil aggregate,and soil fractal dimension.The various treatments of straw in-situ strip composting adding livestock and poultry manure in the field had significant effects on the or⁃ganic carbon content of each particle size of soil aggregates,and the organic carbon content of 0.25 to 0.053 mm particle size grade aggregates among the soil water stability aggregates was the highest.In general,in-situ strip composting of corn straw in field combined with different livestock and poultry manures increased the organic carbon content of soil aggregates and the content of large aggregates,and optimized the stability of the aggregate structure.Among them,the treatment effect of straw strip composting in field adding chicken manure was the best,which had a certain improving effect on the physical properties of the soil and increased

关 键 词：秸秆条带堆腐 畜禽粪 土壤团聚体 土壤有机碳 

分 类 号：S152.4[农业科学—土壤学]