生物炭基肥料施用对水稻产量及肥料利用率的影响

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关键词：生物炭基肥料;水稻产量;减量施肥;氮素吸收;肥料利用率中图分类号：Q945.79;S793.6 文献标志码：A DOI编码：10.3969/j.issn.1006—6500.2025.04.008

Abstract：Toenhancetheproductivityofmedium-to-low-yieldpaddyfieldsinthemidleandlowerreachesof theYangtzeRiver，a fieldexperimentwasconductedinDangyangCity，HubeiProvine，toevaluatethefectsofbiochar-basedfertilizersoniceyield andnutrientuseficiency.Sixtreatmentserestablished：conventionalfertilization（T），iochar-basedfertlizerwihoe-tie nitrogenapplication（T2），biochar-based fertilizer with split nitrogenapplication（T3），biochar-based fertilizer with 90% total nutrients with split nitrogen application（T4），biochar-based fertilizer with 80% total nutrients with split nitrogen application（T5），and a no-fertilizercontrol（CK）.Tempactsftesetramentsoiceield，utrentuptake，ndfertirutizationiecyweestaly analyzed.TheresultsshowedthatcomparedwithT1，TandT3significantly increasedyield（5.15%-10.71%），nitrogenptake 9.86% -19.73% ），nitrogen agronomic efficiency 20.63%-42.83% ，nitrogen apparent recovery efficiency 31.25%-39.81% ）， phosphorus uptake （7.98%-33.52% ），phosphorus agronomic efficiency （20.63%-42.86% ），and phosphorus apparent recovery efficiency （ 19.16% -80.49% ）. Treatment T4 demonstrated enhanced nitrogen uptake （5.86% ，nitrogen agronomic efficiency （40.47 % ）， nitrogen apparent recovery efficiency （24.24% ），phosphorus agronomic efficiency （10.47% ），and phosphorus apparent recovery efficiency （12.83 % ）relative to T1. However，T5 reduced rice yield （5.10%） ， nitrogen uptake （2.76% ，and phosphorus uptake （2.14%） ，while improving nitrogen and phosphorus apparent recovery efficiencies by 21.82% and 18.52% ，respectively.In conclusion，under equivalent nutrient input， T3（biochar-basedfertlirwithsplititrogeapplication）sgnificantlyimprosfertlirutlaonficiecyandield.Evewitha （204号 10% reductionintotalnutrients，ochar-basedfertilizermantainedomparablericeyeldwhilesubstantiallehancingnutrienuefficiency，demonstrating its potential for sustainable nutrient management in rice production systems.

KeyWords：biocharbasedchemicalfertilizer;riceyield;reducefertilization;nitrogenabsorption;fertilizerutilizationrate

水稻是我国主要的粮食作物之一，施肥是确保水稻高产、稳产的重要措施之一[1-2]。（剩余9647字）