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ID:34824188
大小:2.46 MB
页数:56页
时间:2019-03-11
《试析稻茬覆盖地小麦保护性耕作技术及机具研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中国农业大学硕士学位论文稻茬覆盖地小麦保护性耕作技术及机具研究姓名:王刚申请学位级别:硕士专业:农业机械化工程指导教师:李问盈20060601接要我国南方稻麦两熟区保护性耕作技术发展迅速,但受田间地块小、灌溉地和农民收入不高等条件的影响,目前仍以手工作业为主+研究稻田小发保护性耕作技术模式与配套机具,对于提高劳动效率、羟抵捧数戏本等意义重大。论文以四川省稻茬覆盖逢小麦凫(少)耕技术和桃其为研究对象,探索了稻浚两茬区保护性耕作技术模式,通过建立不同因素的田间对比试验,分析各因素对小麦出苗、分蘖和生长情况的影响
2、。结合配套稻茬覆盖地带状浅旋小麦播种机的研制,提出了合城的小麦保护性耕作技术模式:半疆入垂走式联合收钢枧浚割(繁粉碎)痰稻+终耱覆盖(不动孳)+小麦荣获浅麓{}錾秘。针对稻茬覆盖地小麦免耪播种的需要和秸秆全艇粉碎还田条件下开沟器易堵辫等问题,研俸l出与四川农村保有最大的手扶拖拉机配套的带状浅旋小麦播种机,来用旋耕弯刀浅旋破茬、开沟,并合理布置刀轴,配合覆土装置,可顺利在稻草全攮粉碎还田的条件下播种,开沟播种质量稳定、困翔遴进毪莛驽。嘲间试验结果表明.带状浅旋小麦免耕播种机礅茬开沟质最好,动土量小(歼沟宽度5
3、cm旋右,人士深度3.5cm),配套手扶拖拉机作业,对地液破坏小,符☆稻田小麦播种需要。关键键:稻蓑覆藏逮,耪俸模式,静凝浅凌,,l、麦撵释辊,酸茬莠海寒刀TIAbstractPaddyconservationtillagetechnologyinSouthChinaisdevelopingveryrapidly.Howeveritismainlyworkedbyhandcraftformanyfactors,suchassmallfield,irrigatingfieldandlowincomesands
4、oon.Researchingontheconservationtillagetechnologymodeandseederinpaddyfieldplayasignificantroleinimprovingtillageefficiency;andreducethecoast.Thetechnologyofwheatminimumtillageandtheseederforthefieldwhichhaspaddystubblesandstrawswerestudiedinthisthesis.Byse
5、ttingupthecontrastexperimentaboutwheattillagemodeindifferentconditions,analyzingtheeffectofeachfactortothewheatgrowthcondition.Areasonabletechnologymodeofwheatconservationtillagewasadvancedbycombiningwiththestudyonstriprotarytillagewheatseeder.Andthemodeis
6、thatharvestingwithchoppingstalk,letstalkstill,andplantingbystriprotarytillagewheatseeder.Fortheneedofwheatno-tillageplantinginpaddystubble-sh'awfield,thestriprotarytillagewheatseederismainlyinventedforavoidingblocking.Theseedershouldbesuitableforwalkingtra
7、ctorswhiehareabundantint11erutalareaofSichnanProvince.Theseederadoptsrotarytillagebentbladetochopstubbleandditching.Itcanplantwheatfluentlyinthefieldcoveredwithmanycrushedpaddystalks.Andthequalityofditch—chopstubble,seedingandtrafficabllitycharacteristicis
8、verystable.Theseederexperimentresultsshowthatthequalityofditch-chopstubbleissatisfactory.Itcandisturbsoillittle.Theseedditch’swidthisabout5cm.andthedepthisabout3.5cm.Theseederissuitableforwalkingtractors,andi
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