Monitoring and Regional Differentiations on Insecticide-resistance of Empoasca vitis
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摘要: 采用浸叶法连续3年(2013-2015年)监测了福州市晋安区宦溪镇茶园假眼小绿叶蝉对联苯菊酯的抗性情况,并于2014年测定福州晋安宦溪、南平建瓯东峰、泉州安溪金谷和宁德蕉城霍童等茶主产区的假眼小绿叶蝉种群对两种联苯菊酯和啶虫脒的抗性水平。结果表明,与2013年相比,2014年宦溪茶园假眼小绿叶蝉种群对联苯菊酯的抗性增加2.7倍,2015年的抗性则增加了8.6倍,抗性增加的速度较快。不同地区茶园的假眼小绿叶蝉对联苯菊酯和啶虫脒的药剂敏感性显著不同,宦溪茶园假眼小绿叶蝉种群对联苯菊酯和啶虫脒为低抗水平;金谷种群对联苯菊酯为中抗水平,而对啶虫脒为低抗水平;霍童种群对联苯菊酯为高抗水平,对啶虫脒为低抗水平;而东峰镇的假眼小绿叶蝉种群对联苯菊酯和啶虫脒均为高抗水平。因此,如果继续大量使用联苯菊酯和啶虫脒,抗性还将会进一步上升,应交替使用不同类型杀虫剂,确保防治效果,延缓假眼小绿叶蝉抗性升级。Abstract: Resistance of tea leafhoppers to bifenthrin was monitored consecutively from 2013 to 2015.Variations on the resistances of the insects to bifenthrin and acetamiprid at 4different sites in Fujian were determined using a tea tip-dipping method in 2014.The results indicated that the population at the tea gardens in Huanxi was 2.7times higher in its resistance to bifenthrin in 2014 and 8.6times higher in 2015 than in 2013.The resistance of leafhoppers to bifenthrin and acetamiprid differed significantly at different sites.The Huanxi population showed a low-resistance to bifenthrin and acetamiprid with a resistance index of 8.2times;at Jingu,a mid-resistance to bibenthrin and a low-resistance to acetamiprid were observed;at Huotong,a high-resistance to bifenthrin and a lowresistance to acetamiprid were found;and,at Dongfeng,high-resistances to both bifenthrin and acetamiprid with resistance indices of 75.7and 102.4times,respectively,were evident.Hence,continual application of bifenthrin and acetamipridin with large doses would further increase the leafhopper's resistance to the insecticides.It was,therefore,recommended alternating the use of different pesticides to curtail rapid development of insecticideresistance of the insects.
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Key words:
- Empoasca vitis /
- bifenthrin /
- acetamiprid /
- insecticide-resistance
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