溴甲烷对韭菜苔上葱蓟马的杀灭效果  

Effect of methyl bromide fumigation on Thrips alliorum of Chinese chives flower stalk

作　　者：赵菊鹏[1] 梁振宇 周庆贤 刘玉东 伍伟亮 梁广勤[1] 梁帆[1] Zhao Jupeng;Liang Zhenyu;Zhou Qingxian;Liu Yudong;Wu Weiliang;Liang Guangqin;Liang Fan(Guangdong Inspection and Quarantine Technology Center,Guangzhou 510623,China;Huadu Entry-Exit Inspection and Quarantine Bureau;Huadu Management Center of Agricultural Technology;Guangzhou Yi Nan Electronic Technology Co.,Ltd.)

机构地区：[1]广东检验检疫技术中心,广东广州510623 [2]花都出入境检验检疫局 [3]花都区农业技术管理中心 [4]广州宜南电子科技有限公司

出　　处：《植物检疫》2018年第4期60-63,共4页Plant Quarantine

基　　金：花都科技攻关项目(HD13GY2032)

摘　　要：韭菜苔是我国一种新兴的出口蔬菜,葱蓟马是韭菜苔花蕾部分可能携带的昆虫。为确定溴甲烷检疫处理葱蓟马的技术指标,本文测定了不同温度条件下溴甲烷对葱蓟马的毒力,确定在17.5～18.5℃、22～23℃和26～28℃下,溴甲烷熏蒸葱蓟马死亡率达到机率值9所需浓度时间乘积(CT值)分别为89.06、58.03和42.74 g·h/m^3 。在17.5～18.5℃,40、50、60 g/m^3 ;22～23℃,30、40、50 g/m^3 ;26～28℃,20、30、40 g/m^3 条件下,溴甲烷处理韭菜苔在可溶性糖、蛋白质、粗纤维、Vc、脂肪的含量与对照都没有明显差异;但在风味上17.5～18.5℃下60 g/m^3 处理的韭菜苔生吃和熟吃与对照相比稍有异味感。上述温度和浓度处理后,韭菜苔中溴甲烷残留检测不到。根据上述结果,建议采用17.5～22.9℃48 g/m^3 2 h、23～27.9℃32 g/m^3 2 h和大于28℃24 g/m^3 2 h作为韭菜苔携带有害生物的溴甲烷熏蒸技术指标。Chinese chives flower stalk is one of vegetables for export which may be infected with Thrips alliorum. In order to determinate the eliminated doses of mehyl bromide against Thrips alliorum for quarantine purpose,we investigated the toxicity of methyl bromide at different temperatures. The CT values of fumigation on Thrips alliorum to achieve probit 9 mortality were 89.06、58.03 and 42.74 g·h/m^3 at17.5-18.5℃ 、22-23℃ and 26-28℃. The contents of soluble sugar,protein,crude fiber,Vc and fat in Chinese chives flower stalk were not significantly different between the treated samples by the methyl bromide and the control at 17.5-18.5℃,40、50、60 g/m^3;22-23℃,30、40、50 g/m^3;26-28℃,20、30、40 g/m^3,but the raw and cooked Chinese chives flower stalk treated at 17.5-18.5℃,60 g/m^3 has foreign taste compared with control. After the above temperature and concentration treatment,the methyl bromide residue in Chinese chives flower stalk was not detected. Based on these results we suggest that 17.5-22.9℃ 48 g/m^32 h、23-27.9℃ 32 g/m^32 h and 〉28℃ 24 g/m^32 h could be used for quarantine fumigation of Chinese chives flower stalk.

关 键 词：韭菜苔 溴甲烷 熏蒸 葱蓟马 品质 

分 类 号：S41[农业科学—植物保护]