覆膜壟作對(duì)土壤氮磷鉀含量及馬鈴薯養(yǎng)分利用率的影響

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中圖分類號(hào)：S532 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：2097-2172（2025）04-0343-05

doi：10.3969/j.issn.2097-2172.2025.04.012

Effects of Mulched Ridge Tillage on Soil Nitrogen， Phosphorus， and Potassium Contentsand Potato NutrientUtilization Rates

ZHAO Xiaolong （Lixian Agricultural Technology Extension Centre，Lixian Gansu 7422Oo， China）

Abstract：Thisstudy investigates theimpact of mulchedridge cultivation on soilnutrientcontentsand potato production performance，iingtoprovideathoreticalbasisforsilrtilityimproementertliseatesndtevelopmentofiatr harvestingcultivationtechniquesindrylandstosupporthighqualityhighieldpotatoproductionWithonventinalidgingas control（CK），threetreatmentswereestablished：fullfilmdoubleridgefarming（FRF），springfilmridgewithmicrofuowrainwater harvesting（SRF），ndutufdgeithicofurrowinwatervesting（ARF），tosessfectsosoilavalableg （N），phospos（dssKotsatoddrtltessdi CK，ll mulchedtreatmentssignificantlyincreasedavailableN，PandKcontentsintheOto6Ocmsoillayer.ARFtreatment achievedthehighest3-yearaveragepotatoyieldat48210.9kg/ha，significantlyhigherthanCK.Mulchedridgecultivation significantlyimproedpartialfactorproductiity（ofN，andKfertilies，ithReingthemostecive.ompaedtoCK， the average 3-year increases in PFP for N，P，and K fertilizers were 4 8 . 1 % ， 4 3 . 2 % ，and 2 7 . 7 % ，respectively. Agronomic efficiency （AE） was highest under ARF inall years，and theaverage AE over three years followed the order as P > K > N. In conclusion，ARF hasaclearadvantaginimprovingsoilfertlityertilizerutilization，andpotatoield，makingitooftepreferrdigeld efficient potato cultivation techniques in dryland regions.

KeyWords：Spring orautumn filmmulching； Ridge-furowrainwaterharvesting； Soilnutrient； Nutrientutlizationrate；Potato

土壤氮磷鉀養(yǎng)分含量是反映土壤質(zhì)量的關(guān)鍵和敏感性指標(biāo)，其動(dòng)態(tài)平衡直接影響土壤肥力水平、供肥能力和作物的養(yǎng)分利用率，最終影響作物產(chǎn)量和農(nóng)業(yè)生產(chǎn)力的可持續(xù)性[1-2]。（剩余7105字）