桉树同安钮夜蛾生物学特性及防治的研究

Studies on Biological Characteristics and Control Technology of Anua indiscriminata Moore on Eucalyptus Trees

同安钮夜蛾(Anua indiscriminata Moore)是近年来桉树产区出现的重要害虫之一。该虫在广东蕉岭1年发生4代,以蛹越冬,幼虫6-7龄。每年仅有1个发生高峰期,一般在9月出现。室内药效测定表明:高效氯氰菊酯、保尔、锐劲特、阿维菌素、印楝素、鱼藤氰和吡虫啉对同安钮夜蛾幼虫的毒杀效果均达100%;而Bt和灭幼脲Ⅲ号的杀虫效果分别为96.3%和92.6%。林间试验表明:高效氯氰菊酯、阿维烟剂和Bt对同安钮夜蛾幼虫的杀死率分别为100%、96.6%和89.7%;用烟雾机喷施阿维烟剂10倍柴油溶液,其杀虫率为82.2%。

Anua indiscriminata Moore was one of important pests of eucalyptus in recent years. The pest developed 4 generations a year and overwintered with the pupa in Jiaoling county of Guangdong province. The larva stage included 6 - 7 instars. There was only one larval population peak which occurred in September. According to the toxicity of several insecticides to the larvae by laboratory test, Beta-cypermethrin, Emamectin Benzoate, Fiprenil, Avermectin, Azadirachtin, Rotenone ＋ Fenvalerate and Imidacloprid had good control effects, and the mortalities of the larvae were 100% ; but the effects of Bacillus thuringiensis and Benzoylphenal urea Ⅲ in controlling the larvae were 96. 3% and 92. 6% respectively. According to the toxicity of several insecticides by forest test, Betacypermethrin, Avermectin smoke agent and Bacillus thuringiensis had good control effects, and the death rates of the larvae reached 100% ,96.6% and 89.7% respectively; and the killing rate of 10 dilution of avermectin smoke agent with diesel oil sprayed by mean of the smoke generator was 82. 2%.