【作者】 王长方； 胡进锋； 王俊； 游泳； 陈峰； 陈翔；

【Author】 WANG Chang-fang, HU Jin-feng, WANG Jun, YOU Yong, CHEN Feng, CHEN Xiang (Institute of Plant Protection, Fujian Academy of Agricultural Sciences, Fuzhou 350013, China)

【机构】 福建省农业科学院植物保护研究所；

【摘要】 测定了福建省南平、福州、宁德等地13个柑桔园土壤、柑桔果实及覆盖植物胜红蓟三氯杀螨醇的含量。土壤中三氯杀螨醇检出率为100%,残留量为0.0020~0.895mg.kg-1;柑桔果实检出率为61.54%,桔皮中平均残留量为0.191mg·kg-1,果肉为0.0857mg·kg-1。柑桔中三氯杀螨醇残留量均低于欧盟宽皮柑橘中农药最高残留限量标准2mg·kg-1。与土壤、柑桔果实残留量相比,柑桔园中胜红蓟地上组织与根中三氯杀螨醇含量均较高,平均值分别为2.415mg·kg-1、1.530mg·kg-1。以土壤中三氯杀螨醇的浓度为标准,计算胜红蓟、柑桔果实的富集指数,胜红蓟对三氯杀螨醇的富集力明显高于柑桔果实,不同地区柑桔果实BCF平均值为3.705,而胜红蓟地上组织及根的BCF平均值分别为191.931和106.567。结果表明:胜红蓟对三氯杀螨醇具有富集作用。更多还原

【Abstract】 Dicofol residues in soils, citrus fruits, Ageratum conyzoides of citrus orchards in 13 locations, Fujian province, were analyzed. The dicofol was detected in all soil samples and the concentrations ranged from 0.002 0 to 0.895 mg.kg -1 . Dicofol was detected in 61.54% citrus fruits samples and at a mean level of 0.191 mg.kg -1 for citrus fruits’peel and 0.085 7 mg.kg -1 for citrus fruits pulp, respectively,which were lower than the European Union limit. The concentration in aerial tissues or roots of Ageratum conyzoides was much higher than its in soil or fruits and the average concentrations in aerial tissues and roots of reached 2.415 and 1.530 mg.kg -1 , respectively. The concentration of dicofol in aerial tissues of Ageratum conyzoides was higher than its in roots in 7 of 10 locations. BCFs of Ageratum conyzoides and citrus orange were calculated based on dicofol concentration in soil and result showed that BCFs for aerial tissues and roots were much higher than its for citrus fruits. The averages of BCFs for aerial tissues and roots of Ageratum conyzoides were 191.931、106.567, respectively. Results showed that Ageratum conyzoides may accumulate dicofol.更多还原