异菌脲在杨梅果实中的残留消解动态研究  

Residual Degradation Dynamics of Iprodione in Myrica rubra Fruits

作　　者：颜丽菊 蒋芯 李学斌 林公标 Yan Liju Jiang Xin Li Xuebin Lin Gongbiao(Linhai Specialty and Technology Extension Station, Linhai Zhejiang 317000 Jiaojiang Agriculture and Forestry Bureau, Jiaojiang Zhejiang 318000 Agricultural Service Center of Baishuiyang Town, Linhai Zhejiang 317031)

机构地区：[1]浙江省临海市特产技术推广总站,浙江临海317000 [2]浙江省椒江区农林局,浙江椒江318000 [3]浙江省临海市白水洋镇农业综合服务中心,浙江临海317031

出　　处：《中国农学通报》2017年第9期150-153,共4页Chinese Agricultural Science Bulletin

基　　金：国家公益性行业(农业)科研专项"杨梅产业化关键技术研究与示范"(201203089);浙江省台州市科技项目"杨梅农药安全间隔期及农药减量使用等相关技术研究"(1501KY53);浙江省临海市水果首席专家项目"杨梅绿色防控研究与推广"(2012126)

摘　　要：为研究异菌脲在杨梅果实上的残留降解动态,连续2年,在杨梅幼果期通过1次喷药多次取样和不同时期喷药成熟期1次性取样2种方式,进行杨梅果实中异菌脲残留量检测研究。结果表明:异菌脲在‘东魁杨梅’和‘临海早大梅’果实中的降解符合一级动力学消解模式,半衰期分别为9.2天和13.86天;异菌脲在杨梅果实中降解速度较慢,但在幼果期按常用浓度1000倍液喷施1次,异菌脲残留量低于中国、香港、日本等地区异菌脲在苹果、梨中的最高残留限量标准(MRL)5 mg/kg。To study the residue degradation dynamics of iprodione in bayberry fruits, the residual trial of iprodione in bayberry were carried out by two ways from 2014 to 2015, one was spraying once and sampling repeatedly, another was spraying in different periods while sampling once in mature period. The results showed that the degradation of iprodione in ＇Dongkui＇ and ＇ Linhaizaodamei＇ fruits were in conformity with the first- order kinetic model, and the half-life period was 9.2 d and 13.86 d, respectively. The degradation velocity of iprodione in bayberry fruits was slow, but the residue concentration in bayberry fruit was significantly lower than the maximum residue limit （MRL） 5 mg/kg of apple and pear in China, Hong Kong and Japan. If sprayed one time with 1：1000 dilutions during young fruit period

关 键 词：杨梅 异菌脲 果实 降解 残留量 

分 类 号：S667.6[农业科学—果树学]