三种栽培模式下的冬枣农药残留及其膳食风险评估
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中图分类号： S481+. 8 文献标识码：A 文章编号：1000-4440（2025）07-1448-09
Pesticide residues and dietary risk assessment in winter jujubes under three cultivation modes
DING Yongchong1， CHEN Yongda²，LI Yueqing³， CHEN Yiwen4， ZHANG Jiakun²，LIU Pei'（ArculuedmofAgrculuedFstiecbeKbofntegiaOoofifeFoodEngineneUs；oclDalian116034，China）
Abstract：To assess the pesticide residues and dietary risks in winter jujubes cultivated under open-field conditions， in greenhouses，and with baging treatment，samples werecollected from the main winter jujube-producing areas inHebei provinceand tested for28 types of pesticide residues.Theresults showed thatthe detectionrate of pesticides in winter jujubes was as highas 80% ，with the most frequently detected pesticides being carbendazim，pyraclostrobin， difenoconazole，imidacloprid，tebuconazole，thiamethoxam，lambda-cyhalothrin and cypermethrin. The residue levels of these eight pesticides in winter jujubes under differentcultivationmodes，fromhighesttolowest，wereas follows：open-fieldcultivation > greenhouse cultivation > bagging treatment. The residues of carbendazim，pyraclostrobin，difenoconazole，tebuconazole，thiamethoxam，lambda-cyhalothrinandcypermethrin inopen-field winter jujubes were significantly higherthan thoseinbaggedwinter jujubes （ P <0.05）.Lambda-cyhalothrinand cypermethrin were not detected in bagged winter jujubes.The chronicdietary risk （ %ADI ）of pesticides in winter jujubes ranged from 0.002% to 1.190% ，and the acute dietary risk（ %ARfD ）ranged from 0.022% to 14.800% ，indicating an overall low risk.Based on the estimated maximum residue limit （ eMRL ）values， thisstudyproposedrecommended maximumresidue limit（RMRL）values forchlorpyrifos，carbendazim，thiophanate-methyl，difenoconazole，lambda-cyhalothrin，bifenthrin，cypermethrin，and tebuconazoleandrecommendedrevising the maximum residue limit （MRL）for carbendazim in fresh winter jujubes to 2mg/kg
Key Words： winter jujubes； cultivation pattern；pesticide residue；risk assessment
冬枣（Zizyphus jujubeMill.cv.Dongzao）为鼠李科（Rhamnaceae）枣属（Zizyphus）植物['，其果实维生素C、糖分及微量元素含量显著高于其他水果[2]中国冬枣主产区集中于沧州黄骅、山东滨州沾化、陕西渭南大荔及山西运城临猗等西北部地区。（剩余9958字）
