氯氟氰虫酰胺注干剂在松树体内的残留动态  

Dynamic Residues of Cyhalodiamide Dry Injection in Pines

作　　者：熊彩云[1] 陈秋荣 王文辉[1] 李彬 金明霞[1] XIONG Caiyun;CHEN Qiurong;WANG Wen-hui;LI Bin;JIN Mingxia(Jiangxi Academy of Forestry,Nanchang 330013,China;Forestry Bureau of Jing’an County,Jing’an,Jiangxi 330600,China;Forestry Bureau of Qingyuan District,Ji’an,Jiangxi 343000,China)

机构地区：[1]江西省林业科学院,江西南昌330013 [2]江西省靖安县林业局,江西靖安330600 [3]吉安市青原区林业局,江西吉安343000

出　　处：《生物灾害科学》2021年第4期431-435,共5页Biological Disaster Science

基　　金：江西省林业创新专项(202131);江西省重点研发计划项目(20171BBF60077,20202BBFL63016)。

摘　　要：【目的】为探明氯氟氰虫酰胺注干剂在松树体内的持效时间。【方法】采用高效液相色谱法测定不同时期松树体内氯氟氰虫酰胺的含量。【结果】注干施药后5~120 d均可从样树的枝条中检测到氯氟氰虫酰胺,注药剂量为10 mL时药后15 d含量达到高峰,为16.54 mg/kg,药后120 d含量为1.24 mg/kg。【结论】松树注药5~120 d内枝条上氯氟氰虫酰胺药液浓度均高于其对松材线虫的LC_(50)值而对松材线虫和松褐天牛等有防治抑制作用。[Objective]This study was conducted to find out the durative time of dry injection of cyhalodiamide in pines.[Method]The contents of cyhalodiamide in pine trees at different times were determined by High-performance liquid chromatography(HPLC).[Result]After 5-120 days,cyhalodiamide could be detected in the branches of the pine trees.The content of cyhalodiamide reached a peak of 16.54 mg/kg at 15 days and 1.24 mg/kg at 120 days,and the LC_(50) value was 0.685 mg/kg determined by the toxicity test.[Conclusion]The LC_(50) value of cyhalodiamide in the branches of pine trees was higher than that of pine wood nematode from 5 to 120 days after the injection of cyhalodiamide,and so it could inhibit Bursaphelenchus xylophilus and Monochamus alternatus.

关 键 词：氯氟氰虫酰胺 注干剂 传导 残留 

分 类 号：S481[农业科学—农药学]