杀虫剂对茶园3种常见刺吸式口器害虫的室内毒力评价

摘要/Abstract

摘要： 小贯小绿叶蝉（Empoasca onukii Matsuda）、黑刺粉虱（Aleurocanthus spiniferus Quaintance）和茶蚜（Toxoptera aurantii Boyer）是茶园常见的刺吸式口器害虫,严重影响茶叶的产量和品质,化学防治是其重要的防治措施。本研究测定了10类16种杀虫剂对3种害虫若虫的室内毒力,旨在筛选出高效药剂,为其防治提供参考和依据。室内毒力测定结果显示,唑虫酰胺、甲维盐、茚虫威和虫螨腈对小贯小绿叶蝉的毒力最高,LC₅₀分别为0.23、0.52、0.94、5.24βmg·L^-1;溴氰虫酰胺、氯虫苯甲酰胺、噻虫胺和螺虫乙酯4种药剂对黑刺粉虱若虫的活性高,药后24βh的LC₅₀值分别为0.15、0.26、0.41、0.66βmg·L^-1;除了呋虫胺和茚虫威,其他14种杀虫剂均对茶蚜若虫具有较高毒力,24βh的LC₅₀值均在10βmg·L^-1以下。本研究结果对根据害虫种类有针对性地选择药剂进行防治,促进茶园农药减施有重要意义。

关键词: 小贯小绿叶蝉, 黑刺粉虱, 茶蚜, 杀虫剂毒力

Abstract: Matsuda （Empoasca onukii）, Quaintance （Aleurocanthus spiniferus） and Boyer （Toxoptera aurantii） are three most common piercing-sucking insects in tea plantations, which severely reduce tea production and quality. Chemical control is one of the most important strategies in control of these tea pests. In order to screen high-efficient insecticides, the toxicities of 16 insecticides of ten different classes to the nymphs of three tea pests were evaluated under laboratory conditions. The results of toxicity tests showed that tolfenpyrad, emamectin, indoxacarb and chlorfenapyr showed the highest toxicities to the E. onukii nymphs, with the 24βh LC₅₀ values of 0.23, 0.52, 0.94βand 5.24βmg·L^-1, respectively. Cyantraniliprole, chlorantraniliprole, clothianidin and spirotetramat were four most toxic compounds for the A. spiniferus nymphs, with the 24βh LC₅₀ values of 0.15, 0.26, 0.41 and 0.66βmg·L^-1, respectively. Except for dinotefuran and indoxacarb, other fourteen tested insecticides showed high toxicities to the T. aurantii nymphs, with the 24βh LC₅₀ values below 10βmg·L^-1. The results of this study laid a foundation for selecting and applying insecticides according to the target pests, and also promoting the reduction of pesticides used in tea plantations.

Key words: Empoasca onukii Matsuda, Aleurocanthus spiniferus Quaintance, Toxoptera aurantii Boyer, toxicity of insecticide

中图分类号:

S435.711

王瑶, 慕卫, 张丽霞, 许永玉, 林琎, 张正群. 杀虫剂对茶园3种常见刺吸式口器害虫的室内毒力评价[J]. 茶叶科学, 2017, 37(4): 392-398.

WANG Yao, MU Wei, ZHANG Lixia, XU Yongyu, LIN Jin, ZHANG Zhengqun. Toxicity Assessment of Insecticides to Three Common Piercing-sucking Insects in Tea Plantations[J]. Journal of Tea Science, 2017, 37(4): 392-398.

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