不同耕作方式对旱作区新修梯田土壤理化性质及马铃薯产量的影响

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关键词：旱作区；新修梯田；耕作方式；土壤理化性质；马铃薯产量

中图分类号：S532；S153 文献标志码：A 文章编号：2097-2172（2025）08-0707-06

doi：10.3969/j.issn.2097-2172.2025.08.004

EffectsofDifferent Tillage Practices on Soil Physicaland Chemical Propertiesand Potato YieldofNew Terraced Farmlandsin DryFarming Region

LIU Yanlan 1，2 ，LEI Kangning¹²，MA Mingsheng1，²，LI Shicheng³，HOU Huizhi 1，2 ，YIN Jiade 1，2 ZHANG Jianwen4，YANGFuwei5，ZHANG Jianrong5 （1.Instituteof DylandAgriculture，GansuAcademyofAgriculturalSciences，LanzhouGnsu73Ooo，China;2.KeyLaboratoryof Efficient Utilizationof Water Resources in Dryland Areas of Gansu Province，Lanzhou Gansu 73Oo7o，China; 3.Gansu Agricultural TechnologyExtension Station，Lanzhou Gansu 73oo2O，China; 4.Qin'an County Agricultural Technology Extension Centre，Qin'an Gansu 7416Oo， China; 5.Jingning County Agricultural Technology Extension Centre， JingningGansu 743400，China）

Abstract：Toseletappropriatetilage methodsforimprovingsoilfertilityandcroyieldinnewlyteracedfarmlandsof dry farming areas，a3-yearfied-siteexperimentwasconductedinnewlyconstructedterracesofJingningandQin'an.3tllagemetods suchatasnomalrotarytllage（TT），deeplosening（DLT），andverticaldeeprotary（VRTwerecomparedtoassesstheirfcts onsoilbulkdensityrganicmateravailableitrogencontentd，andpotatoeldesultssowdthatbothDndVducd soilbulkdensitinoftedugandfledsectisofteterrcstovarngdegesinJngnngndQin'anwithshowigoe significantreductions.ComparedwithTT，VRTreducedsoilbulkdensityintheOto2Ocmand2Oto40cmlayersofthedug section by 5.26% to 6.72% and 6.52% to 7.25% ，respectively，and in the filled section by 5.38% to 6.11% and 6.72% to 7.46% respectively.VRTalsoincreasedsoilorganicmaterandavailablenitrogencontentinbothdugandflledsectionsatbothtestsites， especially in the 10 to 20 cm and 20 to 40cm layers.Potato yield under VRT increased by 22.17% to 24.28% in the dug section and 20.49% to 31.10% in the filledsection compared with TT.Therefore，vertical deep rotary tillageisan efficient tillage method suitableforrapidearly-stage conditioningand fertilizationof new terraced farmlandsindry farming areas.

KeyWords：Dryfarmingarea;Newterraced farmland; Tillagemethod; Soilphysicalandchemical property;Potatoyield

黄土高原旱作区是我国重要的农业产区，但其生态环境脆弱，水土流失严重，土壤肥力低下，制约着农业的可持续发展[1]。（剩余7416字）