基于HYDRUS模型评估不同水稻种植区土壤中毒死蜱的环境风险

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关键词：毒死蜱；风险评估；区域差异；HYDRUS模型；水稻田

中图分类号：X592 文献标志码：A 文章编号：1672-2043（2025）12-3122-16 doi：10.11654/jaes.2025-0033

Assessing theenvironmental risk of chlorpyrifos in various regions of paddy fields based on the HYDRUS model

WANG Ye， XUE Nandong，DU Siying， YU Shuntao， ZHAO Binrong

（1.ChineseReseachcdofotaliecs，g，ina;.chcaleterforSlgictualdual EcologyadEnvironent，MinistryofEcologyandEnvironment，Beijing0o12，China;3.CollgeofEnvironmentalcieneand Engineering，Liaoning Technical University，Fuxin 123ooo，China）

Abstract：ThisstudyevaluatedtheenvironmentalriskofchlorpyrifosinicepadiesindiferentregionsinChinabasedonthedataof climateandsoilcharacteristics，utiizingtheHDRUS-1DmodelwithAcGIS.Theectsofrainfall，temperature，soiltexture，soil organicmatercoentnderctosoneigatiofcoosioleaaldindietlantiggiosdsk quotientmethod（RQ）wasusedtodsibeteiskcharacterisicstoexplorethedfrencsinthenviomentaliskofclorpifosin soilsfrodiferentplantingegios.Teesultsshowedtatepeakconcetrationofchorpyrifosinthetopsoiloccuredapidly（d post-aplication）.Thepeakconcentrationinthesubsoilappearedlaterafter6-12Od），wasmuchlowerthanthatof thetopsoilwith notablesoildependentvarationRegialviromntalcoditiossubstantiallinfuencdclorpfosaviorisoilsfltatio cold/dryregionswasmarkedlylowerthaninarainyareas，withpeakcocetrationdiferencesexceeding twoordersofmagide.he rainfallduringtheapplicationperiodhasasignificantimpactonthemigrationbehaviorofchlorpyifosintopsoilSoilpropetiuchas soiltextureandbulkdensityhadasignificantimpactontheenvironmentalriskofchlorpyrfosinsoils.Theregionswithelevated environmentalrisksasociatedwithchlorpyrifosarepredominantlyconcentratedinthecentralandeasteregionsofChinawithsome groundwaterriskspresentintesouthernregios.Teiceplantingregionswithhighenviomentaliskofclorpyifosereconctrated incentralandasteegionsofCaandtereasacertainiskofclorpfosontaatinggroudwaterintesouthgioswih precipitation greater than 800mm .The centraland eastern regions in China are the prioritycontrol regions for chlorpyrifos in paddy fields. Keywords：chlorpyrifos; risk assessment; regional disparities; HYDRUS model; paddy fields

毒死蜱[0，0-二乙基-0-（3，5，6-三氯-2-吡啶基）硫代磷酸酯是在稻田中使用占比最高的杀虫剂[1-2]。（剩余20581字）