蚯蚓粪与微生物菌剂配施对蜜瓜土壤理化性质及微生物群落的影响

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中图分类号：S652 文献标志码：A 文章编号：1673-2871（2025）12-077-11

Effects of combined application of earthworm castings and microbial agents on the physicochemical properties and microbial community of continuous cropping soil of honey melon

MA Fengjie， YANG Chunyin， WANG Zhenlong，ZHANG Jing， SHI Zhiguo （1.GansuAualieingeahiuteos;eiCit provementandFarmlandConservationTechnologyInnovationCenter，Wuwei733ooo，Gansu，China）

Abstract：Toaddresstheisuesofsoilorganicmatterdeficiency，nutrientimbalance，andreduced microbialdiversity caused by long-termcontinuous monocropping inthe Minqin meloncultivation area，this studyutilized environmentally friendlyandeficientvermicompostandmicrobialagents toinvestigatetheirsynergisticeectsonsoilphysicochemical properties and microbialcommunitystructure.Theresults showed that increasing theapplicationofvermicompostsignificantlyenhancedsoilorganicmatterandmicrobialitrogenontent，educedsoilbulkdensityandimprovedsoilstructure， whilemicrobialcarboncontentexhibitedaninitialincreasefollowedbyadecrease.Co-occurencenetworkanalysisof the microbialcommunityrevealedthatProteobacteriaandAcidobacteriawerethekeybacterialphyla，whereasAscomycotadominated the fungal community.Alpha-diversity analysisindicated that the 2× vermicompost treatment significantlyincreased both bacterial and fungal diversity compared to the 0.5× treatment.Although melon yield did not significantly vary with vermicompost application rate， the combination of 3× vermicompost with EMagent significantly improved fruit quality. In conclusion， the combined application of 3× vermicompost and EM agent effectively optimizes the soil microecologicalenvironmentandenhances melonquality，providingatheoretical basis forecologicalmeloncultivationinthe Minqin region.

Keywords：Honeydewmelon;Earthwormcasting;Microbialagent;Physicochemical property;Microbialcommunity structure

民勤县地处河西走廊东北部，东西北三面被巴丹吉林腾格里沙漠包围，绿洲面积少，海拔 1298～ 1936m ，全年日照时数 3104h，≥10∘C 活动积温3757∘C ，生长期平均温度 20∘C，≥0∘C 有效积温3149∘C ，无霜期157d，平均昼夜温差 15.5∘C ，年均降水量 113.2mm[1] ，年均蒸发量 2623mm ，光照时间长，昼夜温差大，极适宜瓜类作物生长2。（剩余13241字）