不同耕作方式對(duì)旱作區(qū)新修梯田土壤理化性質(zhì)及馬鈴薯產(chǎn)量的影響

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關(guān)鍵詞：旱作區(qū)；新修梯田；耕作方式；土壤理化性質(zhì)；馬鈴薯產(chǎn)量

中圖分類號(hào)：S532；S153 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：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

黃土高原旱作區(qū)是我國(guó)重要的農(nóng)業(yè)產(chǎn)區(qū)，但其生態(tài)環(huán)境脆弱，水土流失嚴(yán)重，土壤肥力低下，制約著農(nóng)業(yè)的可持續(xù)發(fā)展[1]。（剩余7416字）