牛粪配施生物炭对盐渍化棉田棉花养分吸收及分配的影响

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Effects of Combined Application of Cow Manure and Biochar on Nutrient Uptakeand Allocation in Cottonin SalinizedCottonFields

HOUShengtong1，²，CHENG Junhui1，²，HUANG Cheng1，²，WANG Bao1，2 （1.CollegeofsoudEiont，ingiulualUivesitUiinjgin;2.iag ratoryofSoilandPlantEcologicalProcesss，XinjiangAgriculturalUniversity，Urumqi，Xinjiang83Oo52，China）

Abstract：Toexploretheefectsofcombinedapplicationofcatlemanureandbiocharoncottonnutrientabsorptionandalocation，as wellastodterminetheoptimalatiocompletelyrandomizedfieldexperimentwasconductedinsalinizedcottonfieldsinWensu county，Xinjiangfrom2O23to2O24.Sixtreatmentswereestablished：control（CK，conventionalfertliation），singlebiochar （BC100% ），single cattle manure 0M100% ），and three combination treatments（ BC70%+OM30% ， BC50%+OM50% ， 8C30%+ OM70 % ）.Nutrientuptake（nitrogen，phosphorus，potassum）inrots，stems，leaves，andbollswasanalyzed duringthebolloening stage，andyieldparametersweremeasuredtoevaluatetheefectsofindividualandcombinedaplications.Theresultsrevealedthat BC30% 0+ OM70%and BC50%+OM50% exhibited optimal performance.In 2024，nitrogen uptake in bols under BC30 %+ OM70% was increased by 183.4% compared with CK.Phosphorus uptake displayed significant interannual variation，with BC30%+OM70% enhancing total phosphorus uptake by 141.4% in 2023， while BC100% demonstrated a long-term gain of 152.1% in the following year. Potassium uptake predominantly accumulated in bolls（ 72.2% of total），and BCS0%+OMS0% improved boll potassium uptake by 216.5% （2023） and 231.1% （2024）.This study confirmed that biochar-cattle manure co-application optimized nutrient allocation dynamicsbetweenreproductiveandvegetativeorgans，ignificantlyimprovingnutrientusefcencyinsalinizedcotonfields.Tesnergistic effects provide a scalable strategy （BC OM= 3：/ or 1：1 ）for saline-alkali soil reclamation in arid regions. Key words： nutrient uptake; cattle manure; biochar;combined application; salinized cotton field

棉花作为我国重要的经济作物和纺织工业原料，新疆棉区贡献了全国 90% 以上的产量。（剩余9534字）