秸秆还田室内培养对土壤微团聚体的影响试验  

Effects of Straw Returning on Soil Micro Aggregate by Incubation Test

作　　者：殷程程[1] 李志洪[1] 矫丽娜[1] 于磊[1] 辛士颖 

机构地区：[1]吉林农业大学资源与环境学院,吉林长春130118

出　　处：《安徽农学通报》2014年第10期50-53,共4页Anhui Agricultural Science Bulletin

基　　金：吉林省科技厅重点基金资助(LFGC14213)

摘　　要：采用秸秆还田室内培养试验，向土壤中添加4%不同形态玉米秸秆和根系进行室内培养腐解转化，探讨不同土壤圈对微团聚体的作用。结果表明：相同处理，不同圈数，从内层（0）到外层（7），粒径为0.05～0.02mm和0.02～0.002mm依次增加，而＜0.002mm及＞0.25mm则表现为依次降低。可知：添加有机物降低了粒径0.05～0.02mm和0.02～0.002mm微团聚体含量，增加了＜0.002mm及＞0.25mm团聚体含量；相同圈土壤，不同处理间，团聚体变化最为明显的为N2处理，故各处理间比较，添加秸秆粉末对土壤微团聚体含量影响最为明显。由此可知，添加秸秆对土壤微团聚体的形成具有明显作用，为秸秆还田培肥土壤提供理论依据和技术参考。This paper adopts straw returning by incubation test,adding 4% different morphology corn straw and root to the soil to decomposing and transformation,in order to discuss the effect of different soil circle on micro aggregate. The results prove that the same processing,different number of turns,from the inner（0） to the outer layer（7）,particle size of 0.05-0.02mm and 0.02-0.002mm is increased in turn;While〈0.002mm and 〉0.25mm is reduced in turn.It can be seen that adding organic matter reduced particle size 0.05-0.02mm and 0.02-0.002mm micro aggregate content,increase the aggregate content〈0.002 and 〉0.25mm;The same soil,different processing,aggregate the most obvious change is for N2 handling,so that the comparison between the groups,adding straw powder was most pronounced influence on soil micro ag-gregate content.Accordingly,adding straw plays an obvious role in formation of soil micro aggregate. It pro-vides theoretical basis and technical reference for straw counters-field enriching the soil.

关 键 词：秸秆还田 室内培养 土壤微团聚体 

分 类 号：S153[农业科学—土壤学]