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1、外文原文No-tillagedrillItisasignificativemissionforthepersonsmajoringinagriculturemechanicstospreadconservationagriculture,especiallyintheregionadoptingthedoublecroppingmode.Thecultureconditionintheseareasgivessomespecialproblemtodrill.Forexample,itispressingtoplantwheatasthef
2、ollowcourseofmaize;Atthattimethestalkscoverissoheavyandthestalksaresoflexilethattheblockisserious;Thebushymaizerootmakestheearthsurfacetooroughtodrillintheno-tillageprocedure;Andseedbarenessisfamiliarwhenadoptingmachineswithgravity-root-brokenmechanisms,etc.Presently,mostn
3、ativeorforeignno-tillagedrillcannotfinishtheworksmoothly.Designingandmanufacturingrow-controlledno-tillagewheatdrillhavebeenrecitedinthisarticlebasedontheanalysisandstudiesoftheintentionandprinciplesoftheconservationtillage.Nowadaysthecoreproblemisanti-blockingintheresearc
4、handdesignofno-tillageplantersdomesticandabroad.Althoughmanyagriculturalmachineexpertshavemadesomeprogress,theanti-blockingproblemisnotsolvedingrain.Basedonit,throughclassifyingandanalyzingtheanti-blockingequipmentusedbyno-tillageplantersanditsprinciple,contrastingtheirres
5、pectivestrongpointandshortcoming,inthelightofthemulchingstalkpropertyandthecontrastoftwokindsofcuttingmethods,theradicaltheoryandgeneralframeworkprojectoftheslidingcuttingtypeanti-blockingequipmentareworkedout.Anew-conceptofno-tillwheatplanter,named2BMD-12no-tillrow-follow
6、wheatplanter,hadbeendevelopedbyChinaAgriculturalUniversitytosolveanextremelyimportantproblemwhichiszerotillageplantingofwheatinnarrowrowspacing(150-200mm)betweenrowsofveryhigh-levelsfulllength,standingmaizestubbleinonepassinthedoublecroppingsituationofNorthChina.Apoweredro
7、tarystrip-choppingunitwasplacedforwardofeachsinglerowofplantertinestoensurethattheabove-groundsectionoftheplantertineiskeptfreefromresidueblockage.Fieldperformancetestofthemachinedemonstratedthatitcouldbeagoodchoicetoworkeffectivelyformuchofthetimeundermorediffcultresiduec
8、onditionsthanthatmostotherplanterscouldtolerateespeciallywhenitfollowswellbetweenthestand
