摘要
【研究目的】研究植物源类杀虫剂苦皮藤素乳油对茶尺蠖等害虫防治效果。【方法】应用0.2%苦皮藤素乳油,500倍、1000倍和1500倍3个浓度,分别处理茶鲜叶放入果酱瓶中,接上茶尺蠖二龄幼虫,进行室内防效评价实验;应用1500倍进行大田防效试验;应用500倍、1000倍和1500倍3个浓度进行防治茶小绿叶蝉的田间防效小区对比试验。【结果】应用500倍、1000倍和1500倍3个浓度的0.2%苦皮藤素其结果表明;室内:0.2%苦皮藤素500倍,药后3天死亡率98.67%,1000倍的死亡率85.33%,1500倍的死亡率73.33%;大田防效:0.2%苦皮藤素1500倍药后10天防治茶尺蠖,防效为88.13%～90.69%;0.2%苦皮藤素500倍药后8天防治小绿叶蝉,防效为63.66%～80.11%。【结论】试验显示了该药剂对茶尺蠖有较好的防效和持效期,可作为植物源类杀虫剂在无公害茶叶生产基地上推广应用。
[OBJECTIVE]This experimentation studied the control effect of the botanical pesticide celangulin EC on pesticides, especially Ectropis obipua hypulina Wehrli . [METHOD] In the control effect experimentation indoor ,the tea leaves was dealed with 500,1000,1500 times 0.2 Percent Celangulin and were put into jam bottles and were put a certain number of the 2th instar larvae of Ectropis obipua hypulina Wehrli; The Control effect experimentation in land was used 1500 times liquor; The Control effect contrast experimentation of small parts of land on Empoasca flasvescems Feb. were used 500,1000,1500 times 0.2 percent celangulin . [RESULTS]The result of the experimentations indicate that the part used 500 times liquor＇s death rate was 98.67% and the part used 1000 times liquor＇s death rate was 85.33% and the part used 1500 times liquor＇s death rate was 73.33% indoor after 3 days . And in land, using 1500 times liquors 10 days on Ectropis obipua hypulina Wehrli, the control effect is 88.13% to 90.69%; using 500 times liquor＇s 8 days on Empoasca flasvescems Feb., the control effect is 63.66% to 80.11%. [CONCLUSION]The experimentations indicate that the control effect of the liquor is good and the control effect lasts long. 0.2 percent celangulin ,the botanical pesticide, can be used in a nuisance - free tea base.
出处
《中国农学通报》
CSCD
2007年第6期488-492,共5页
Chinese Agricultural Science Bulletin
基金
广西农业重点科研课题"有机茶研究开发"(桂农业发[2000]58号)
广西科技攻关项目"有机茶标准化栽培关键技术研究与示范"(桂科攻0537007-3)
关键词
苦皮藤
茶尺蠖
小绿叶蝉
药效
Celastrus angulatus, Ectropis obipua hypulina Wehrli, Empoasca flasvesccms Feb., Medicative effect
