截短侧耳素菌渣堆肥用量对苗期玉米生长与土壤微生物群落的影响

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Abstract：Compostingisacrucialapproachfortheresourceutilizationoffungalresidues.Thisstudyinvestigatedtheeffectsof pleuromutilin fungalresidue compost at five applicationrates： 0（CK），5 （PM20），10（PM40），15 （PM60），and2 （PM80） gkg-1 ： Theresultsindicatethat：1）MaizebiomassandsoilOlsen-Pshowatrendofirstincreasingandthendecreasingwiththeamount ofcompost dosage，with PM40 biomass rising by 108% and Olsen-P by 118% compared to CK，while dissolved organic carbon exhibitsadosage-dependent increase.2）Compostappicationsignificantlyalteredmicrobialcommunitystructure：Therelative abundanceofacterialordersSphingomonadales，Bacilles，andRizobialesicreasewithghercompostrates.PM0achieves the highest bacterial a diversity， whereas CK maintains the highest fungal diversity. 3） Maize biomass positively correlates with Olsen-PandrelativeabundancesofbacterialtaxaBetaproteobacteriales，Thermomicrobiales，and Git-GS-136，butegatively associateswithungalordersEurotiales，Pleosprales，Capnodiales，helebolales，Onygenales，ucoralesandfungalao index.These results demonstrate that optimal application of fungal residue compost （10g⋅kg-1） ）enhancessoil Olsen-P，changes microbial communities， elevates bacterial a diversity， and consequently promotes maize growth. Keywords：Fungal residue compost; soil microorganism; maize;soil property

化肥在促进作物增产、保护国家粮食安全方面发挥着重要作用。（剩余13060字）