不同品种茶叶中克螨特的残留动态

吴光远; 曾明森; 王庆森; 夏会龙

不同品种茶叶中克螨特的残留动态

1.
福建省农业科学院茶叶研究所,福建福安 355015;
2.
浙江工商大学生物与环境工程学院,浙江杭州 310035

基金项目:

国家茶叶产业技术体系项目(CARS-23);国家科技合作项目(2010DF33030);福建省科技计划项目(2003N046);福建省财政专项——福建省农业科学院科技创新团队建设项目(STIF-Y07)

详细信息

中图分类号: S 481
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出版历程
- 收稿日期: 2012-03-05
- 修回日期: 2012-03-16
- 刊出日期: 2012-04-30

Propargite Residue in Teas

1.
Tea Research Institute,Fujian Academy of Agricultural Sciences,Fu'an,Fujian 355015,China;
2.
College of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, Zhejiang 310012,China

摘要

摘要: 探讨克螨特在不同茶类品种上茶叶残留量与半衰期的差异,结果表明:药后15 d 365~1 460 mg·L-1浓度处理的绿茶与乌龙茶降解率分别为94.92%~98.43%和63.73%~87.97%,说明克螨特在绿茶比在乌龙茶茶梢上半衰期更短、降解速率更快、残留量更低;在不同区域乌龙茶中的残留也存在差异,可能与不同茶树品种生长速率不同有关;克螨特的使用安全间隔期,绿茶品种为15 d,与国家原定的标准相符,而乌龙茶安全间隔期应大于15 d。
- 克螨特 /
- 茶叶 /
- 农药残留 /
- 安全间隔期
Abstract: Residues in teas and half-life of the insecticide, Propargite, were tested. Propargite degraded ranging from 94.92% to 98.43% on green teas and 63.73% to 87.97% on Oolong teas 15 days after the insecticide was sprayed at 365-1 460 mg稬-1 dilutions. Thus, Propargite had a shorter half-life, higher degradation rate and less residues left on the green teas than the Oolong teas. In addition, it was found that the level of Propargite residues differed by the regions, where the Oolong teas were grown. The primary reason for the variation might be due to the difference in tea varieties of varied growth rates. According to this study, the spraying of Propargite could be held 15 days prior to harvest for the green teas, which is what stipulated by the national regulation. On the other hand, for the Oolong teas, the lead time seemingly should be more than 15 days to be safe.
- Propargite /
- tea /
- pesticide residue /
- pre-harvest time

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参考文献(3)

[1]	夏会龙,王运浩,万海滨,等. 生长稀释对茶叶中农药残留降解的影响[J]. 茶叶科学, 1992, 12(1):1-6.
[2]	曾明森,吴光远,夏会龙. 硫丹在茶叶中的残留动态与用药安全性评价[J]. 华东昆虫学报,2009, 18(2):101-106.
[3]	林金科,李秀峰,林小端,等. 4种农药在适制乌龙茶品种茶树上的自然降解动态[J]. 中国农学通报, 2008, 24(1):104-111.