简介：Furfuralresidue,anindustrialwaste,isakindofstronglyacidicorganicmaterials.Itscomprehensiveutilizationinagricultureshowedasignificanteffectoncontrolofsoilalkaliztion,ameliorationofsolonetzandincreaseofcropyields.IndetailitmayadjustpH,depressalkalinity,reducebulkdensityandcompactnessandincreasewaterpermeabilityandretentionabilityofthesoil.Meanwhileagriculturaluseoffurfuralresidueprovidedaneffectivewaytoavoiditspollutionofthesoil,waterandair.

简介：Afieldexperiment,involvinglimeN(calciumcyanamide,CaCN2)fertilizationasacontrolmeasure,wasconductedtostudyenvironmentalproblemsinducedbylong-termheavyNapplicationinJapaneseteafields.Long-termteacultivationcausedserioussoilacidification.Seventy-sevenpercentofthe70teafieldsinvestigatedhadsoilpHvaluesbelow4.0,and9%below3.0,withthelowestvalueof2.7.Moreover,excessNapplicationinteafieldsputathreattoplantgrowth,inducedseriousnitratecontaminationtolocalwater,andcausedhighnitrousoxideloss.ComparedwiththeconventionalhighNapplicationtreatment(1100kgNha-1)withoutlimeN,thelowNapplication(400kgNha-1)withcalciumcyanamideeffectivelystoppedsoilacidificationaswellasachievedthesameorslightlyhigherlevelsinteayieldandintotalNandaminoacidcontentsofteashoots.Theapplicationofcalciumcyanamidecouldbeasuitablefertilizationforthepreventionofenvironmentalproblemsinteacultivation.

简介：ThereasonsfortheYangtzeRiverfloodcalamityin1998arebrieflyintroduced.Theauthorsbelievethatusinga'soilreservoir'conceptisanimportantmeanstohelpcontrolfloodingoftheYangtzeRiver.A'soilreservoir'hasalargepotentialstoragecapacityanditswatercanberapidly'discharged'intotheundergroundwaterinatimelyfashion.Theeroded,infertilesoilsoftheYangtzeRiverWatershedarecurrentlyanobstacletoefficientoperationofthe'soilreservoir'.Thestoragecapacityofthis'soilreservoir'hasbeenseverelyhamperedduetointensivesoilerosionandtheformationofsoilcrusts.Therefore,possiblemeasurestocontrolfloodsintheYangtzeRiverWatershedinclude:rehabilitatingthevegetationtopreservesoilandwaterontheerodedinfertilesoils,enhancinginfiltrationofthedifferentsoiltypes,andutilizingthelarge'soilreservoir'oftheupperreachesoftheYangtzeRiver.

简介：MicrometeorologicalandmicroplotexperimentswereconductedinthefieldoffreshlyharvestedgreencaneinQueensland,Australia.ResultsshowedthathighammonialossoffertilizerNcouldoccurunderrelativelydryconditionswhenureaorcommercialproductofmixtureofureaandmuriateofpotashwereappliedtothesurfaceofsugarcanetrash.ThemoisturecontentinthetrashandthepHoffertilizerweretwoimportantfactorscontrollingtheprocessesofureahydrolysisandammoniavolatilization.MostoftheNinthesoilwastransformedtothenitratel-nitritefromafter70daysoffertilizerapplication.Nosignificantleachingwasfound.Urea-freeNfertilizershadhigherNrecoveriescomparedtourea-containingfertilizers.

简介：杆菌仙影拳X5的功效被在文化的增加下面检验秒阶段少年死亡和鸡蛋孵化率在vitro作为对根结线虫的一个潜在的生物控制代理人评估过滤并且在由与B提高的简历器官的化肥的申请的planta。仙影拳X5，B。thuringiensisBTG，或TrichodermaharzianumSQR-T037独自或一起在温室和领域试验。根结的biofumigation有器官的材料(鸡粪肥，猪粪肥和大米稻草)的大批出没于线虫的土壤独自或在有B的联合。仙影拳X5也在温室实验被进行。在实验室，B的filtrate。孵化的更有效地减少的鸡蛋有效地为14d和更多在潜伏期期间评估的仙影拳X5比B的在24h的潜伏期期间杀死了秒阶段少年。thuringiensisBTG。为温室西红柿和地甜瓜的一种的最高干燥的射击重量在两个被发现处理由与由仅仅与B提高的简历器官的化肥组成的三个biocontrol代理人和处理提高的简历器官的化肥组成。仙影拳X5。二简历器官的化肥比仅仅与B提高的那些完成了更好的nematicidal效果。thuringiensisBTG或T。harzianumSQR-T037。B。仙影拳X5也提高了biofumigation的效果，它导致了增加的植物生物资源并且在根和根围土壤减少了线虫计数。因此，这些结果在温室两个都建议了根结线虫的那生物控制，域能被使用B有效地完成。仙影拳X5和农业浪费。