生物炭与氮肥配施对水稻土理化性质及作物氮效率的影响

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中图分类号：S511；S153 文献标志码：A 文章编号：1672-2043（2025）06-1582-08 doi：10.11654/jaes.2024-0545

Effects of biocharand nitrogen fertilizercombinationon the physicaland chemical properties of rice soil and crop nitrogen efficiency

GUO Yaxin1²， YANG Jingxiu1，2， HAN Yufang1，2， WANG D [1，2 ， CAO Dianyun1²2， MENG Jun 11，2 ，CHEN Wenfu1²， LAN Yu1，2* （1.CollegeofgooeagicuualUivesityng86，ina;2eybatoryofocdSlt Ministry of Agriculture and Rural Affairs， Shenyang 11O866， China）

Abstract：Theaimofthisstudywastoivestigatetheimpactsofthecombinedaplicationofbiocarandnitrogenfertilizeronthe physicochemialproptisofddysoil，roenilzationdeldatioof.Thicalddysoilinogrea selectedasthseahetoductfeldperetreefurexperientaltraments：NrognfertleCK）io fertilizer alone（N），biochar alone（BC），and the combination of nitrogen and biochar（N + BC）.The rice yield was measured after harvest， andthesoilwassampledtoeterinetehysicalandchemicalpropetsoftesoilTeaditioofostoveriocharsigiicantly decreased soil bulk density by O.04-0.07 g⋅cm-3 and significantly enhanced soil pH and nutrient content. Among them，the soil organic materandavailablephosphoruscontentweremostsignificantlyimprovedunderthetreatmentof thecombinationofbiocharandnitrogen fertilizerComparedwiththesoleapplicationofchemicalfertilizers，thecombinationofcostoverbiocharanditrogenfertiler significantly increased riceyield，with economicyield，strawyield，andbiological yield increasing by 10.03% ， 8.70% ，and 9.36% respectivelyTeditioofohartorgnfertirgificantlyieasdtrogencotetandulationinassll thenitrognharvestidexofie.imultanouslyrognfertilieruilizatiofciencyartialproductityndslg dependence rate of rice were significantly enhanced by 2.09 % ， 5.47% ，and 2.44% ，respectively.The combination of biochar and nitrogen fertilizerisconducivetoenhancingsoilfertilitylevels，therebysignificantlyincreasing nitrogenaccumulationandyieldofrice.

Keywords：biochar; rice; physicaland chemical properties of soil; composition of output; nitrogen efficiency

生物炭是农林废弃物在缺氧和相对低温条件下热解形成的富碳产物，其本身呈碱性，施入土壤中可以一定程度上提高土壤pH值从而抑制土壤中重金属离子活性。（剩余15301字）