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当前位置: 首页 > 文章 > 苦皮藤乳油对小菜蛾种群的控制作用 西北农业学报 2002,11 (3) 49-54
Position: Home > Articles > The Effect of Celangulim against Diamond Back Moth,Plutella Xylostella L. Acta Agriculturae Boreali-occidentalis Sinica 2002,11 (3) 49-54

苦皮藤乳油对小菜蛾种群的控制作用

作  者：
侯有明;庞雄飞;梁广文;尤民生
单  位：
华南农业大学昆虫生态研究室;福建农林大学植保学院
关键词：
苦皮藤;小菜蛾;种群控制;忌避作用;拒食作用
摘  要：
通过室内外系统试验探讨了体积分数 1 %苦皮藤乳油对小菜蛾 ( Plutella xylostella L.)种群的控制作用 ,并采用生命表技术进行评价。结果表明 ,其控制作用主要表现在对成虫产卵的忌避作用、对幼虫的拒食作用以及对生长发育的影响和减少幼虫危害力等方面。体积分数 1 %苦皮藤乳油 1 0 .0 0 m L/ L处理对成虫的忌避率为 73.2 % ,对幼虫的选择性和非选择性拒食率分别为 94 .7%和 93.5 % ,幼虫总取食量是对照的4 0 .1 % ,使小菜蛾种群趋势指数 ( I值 )由对照的 2 1 .95 4降为 0 .6 6 84 ,干扰作用控制指数 ( IIPC)为 0 .0 30 4。采用状态空间分析法就苦皮藤乳油施用后小菜蛾种群数量动态的模拟分析亦表明 ,其显著的控制作用表现在种群发展初期对成虫产卵的忌避作用。
译  名：
The Effect of Celangulim against Diamond Back Moth,Plutella Xylostella L.
作  者：
HOU You-ming 1, PANG Xiong-fei 2, LIANG Guang-wen 2, YOU Min-sheng 1 (1.College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou Fujian 350002, China; 2. Laboratory of Insect Ecology, South China Agricultural University, Guangz
关键词：
Celangulim; Plutella xylostella; Population control; Deterrent effect; Antifeedant effect
摘  要：
Effect of celangulim dosages on population dynamics of the diamond back moth (DBM), Plutella xylostella, was investigated in both laboratory and field, and evaluation was carried out with life-table technology. The results showed that celangulim strongly deterred the adult from laying eggs and significantly inhibited larval feeding on the plant with it. When 10.00 mL·L -1 of celangulim was applied, 73.2% of the adults of DBM was kept away from the host plant, and the selective and non-selective antifeedant rate were 94.7% and 93.5% respectively. Total food intake by DBM larva decreased to 40.1% of that in the control. The index of population trend of DBM decreased to 0.6684 from 21.954 in the control. The interference index of population control was 0.0304. Based on the space-state equation of cybernetics, models of DBM population dynamics were set up, which indicated key role of deterrent activity of celangulim on the adult egg-laying in control of the population.

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