生态学杂志2025，Vol.44Issue(4)：1245-1252,8.DOI:10.13292/j.1000-4890.202504.035
耕作方式对华北潮土区土壤团聚体线虫群落的影响
Effects of tillage methods on soil aggregate nematode community in fluvo-aquic soil area of North China
摘要
Abstract
Nematodes are a class of active organisms in soils,with important ecological functions in maintaining the stability of soil ecosystems and promoting material cycling and energy flow.At present,the response of nematode communities in soil aggregates in fluvo-aquic soils of the North China Plain under different tillage methods is not clear.In this study,we investigated the effects of tillage methods on nematode community in soil aggregates in a flu-vo-aquic soil in Qihe County,Shandong Province.There were four treatments,including rotary tillage+straw re-turn(RT),deep plowing+straw return(DP),deep loosening+straw return(SS)and no-tillage+straw return(NT).The results showed that deep loosening and no-tillage treatments increased the percentage of bacterial-feed-ing nematodes in small mega-aggregates(2-5 mm),and decreased that of plant-parasitic nematodes.Moreover,deep loosening and no-tillage treatments increased the Wasilewska index(WI),which was favorable for bacterial-feeding nematodes to participate in organic matter and nutrient cycling.Deep loosening and no-tillage treatments in-creased the soil nematode pathway index(NCR),and increased soil organic matter index in large mega-aggregates(＞5 mm),within which the decomposition pathway of soil organic matter was dominated by bacteria.Soil organic carbon,total nitrogen content,and soil pH were the main environmental factors affecting the total number of soil nematodes and the number of each trophic group.Overall,deep loosening and no-tillage conditions favored the for-mation of stable nematode community structure in soil aggregates,which provides a theoretical basis for the selec-tion of farming practices in the fluvo-aquic soils of the North China Plain.关键词
土壤线虫/耕作方式/潮土/华北平原/土壤团聚体Key words
soil nematode/farming method/fluvo-aquic soil/North China Plain/soil aggregate引用本文复制引用
胡如男,沈晓琳,王肃,樊平,谭炳昌,张贵龙,王丽丽..耕作方式对华北潮土区土壤团聚体线虫群落的影响[J].生态学杂志,2025,44(4):1245-1252,8.基金项目
中央级公益性科研院所基本科研业务费(2023-jbkyywf-wll)资助. （2023-jbkyywf-wll）
