Soil Aggregate Stability(21)

土壤团聚体的经典文章

102JOURNALOFSUSTAINABLEAGRICULTURE

adsorptioncontributingofwaterbytheorganismsandthepromotetofabricdevelopment.Thesemechanismsgrowthdevelopoflivingstressesorganismsthatismpackingcells,areorganizationtheeffect,worksgrowingInaddition,infungihaveageneralobservedmassofDegensthatclaymycorrhizae(Tisdall,1991;slowedHadastheslakingetal.,thefissureandentanglingprocess1994).Thomasintheetal.(1993)tionetal.(1994)reportedthathyphaearenotsoeffectiveinsoil.theHowever,stabiliza-clearer,Nowofsandythatsoils.

theroleofmicroorganismsinsoilthebility.soilthemicrobialquestionpopulationiswhetherorortheirnotby-productsthereisanyprospectaggregationisbecomingtopromoteforaggregatemanipulatingsta-etThisisoneofthetargetsofsoilbiotechnology.Inthissense,productional.(1995)candemonstratedbemanagedthatbymicrobialNsupplyextracellulartoagriculturalpolysaccharidesRobersonsoils.(EPS)SoilFauna

structureEarthworms,materialsbyingestingmanysoilinsectandlarvae,mixinganditintimatelyotherlargerwithfaunamaystabilize1982;intheirguts,andegestingitascastsorpellets(TisdallhumifiedorganicpromoteJastrow1995).infiltrability,andMiller,1991;Oades,1993).EarthwormburrowsandstronglyOades,promoteSomeofsoildegradation.research,gashowever,exchange,Shipitalosuggestsandrootgrowth(PoierandRichter,andProtzthat(1988)earthwormproposeactivitythatcanalsomicro-aggregatessoilbyearthwormsresultsindisruptionofsomeexistingbondsingestionwithinmoreing.dispersiblethanandrealignmentuningestedofclaydomains.Therefore,freshcastsareoccursSignificantwhenwhenincorporatedimprovementorganicinthesoil,debriswatercontributingtosoilerosionandcrust-fromstabilitythefoodoffresh,moistcastsonlyactivitymoistcastsareagedordried.Nevertheless,inthesourcesispresentandbeetlesInaddition,enhancesnematodes,soilaggregatelongterm,castingtermites,stability.

ants,spidersHowever,andtanthemothsaddedcanthat,formingeneral,structurethebymesofaunacreatingandthelarvaeofvariousarebioporesnotconsidered(Oades,1993).moveintheformationofstructureinarablesoilsbecausetheyareimpor-themostsoilparticles.Nevertheless,themesofaunainconjunctiontoosmallwithtoporeslargerreaderForinfaunacouldwellbebeneficialinenhancingandstabilizingthemorewhichinformationtheylive.

ontheeffectoftheactivitiesofanimalsandFosterisreferred(1992),toSchraderHole(1981),etal.Lobry(1995),deandBruynPoierandandConacherinsoils,theRichter(1995).

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