| 栗瘿蜂生物学特性观察与防治方法探讨 |
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| 引用本文： | 罗维德.栗瘿蜂生物学特性观察与防治方法探讨[J].植物保护学报,1980,7(4):221-226. |
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| 作者姓名： | 罗维德 |
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| 作者单位： | 北京市植物保护站 |
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| 摘 要： | 栗瘿蜂在北京地区一年发生一代。无雄蜂,营孤雌生殖。以初龄幼虫在栗芽组织内越冬,翌年5月下旬幼虫老熟在虫瘿里化蛹,6月中、下旬羽化,脱孔出蜂,产卵于栗芽内。卵于7月中旬孵化,初孵幼虫先在栗芽组织表面危害,然后形成小虫室越冬。室内药效测定表明,10%六六六乳剂200倍液、50%杀螟松乳剂1000倍液、50%乐果乳剂1000倍液,对刚脱孔和正在咬孔的成虫触杀效果都很好。田间栗树喷药试验结果表明,成虫羽化95%以上时,喷布10%六六六乳剂或超低量油剂,效果良好。冬季剪枝,保留结果母枝和有用发育枝,防虫效果明显。保护及利用自然天敌长尾小蜂是防治栗瘿蜂值得注意的途径。
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STUDIES ON THE BIONOMICS AND CONTROL OF THE CHESTNUT GALL WASP |
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| Lao Weide Beijing.STUDIES ON THE BIONOMICS AND CONTROL OF THE CHESTNUT GALL WASP[J].Acta Phytophylacica Sinica,1980,7(4):221-226. |
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| Authors: | Lao Weide Beijing |
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| Institution: | Plant protection Service |
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| Abstract: | In Beijing suburb,the chestnut gall wasp Dryocosmus kuriphilus Yasumatsu has only one generation each year,and overwinters as young larvae within the host buds.It seems to propagate through parthenogenesis. Next year at the end of May the larvae mature and middle to the pupate in the galls.The emergence of the adult wasps extends from the end of June.The females lay eggs on the buds of the chestnut.Eggs hatch in the mid June.The newly hatched larvae at first begin to feed on the bud tissues,afterwards they form cabins and pass through their winter time.The development and degree of damage of the gall wasp depends on the climatic conditions.Laboratory tests showed that 10% BHC emulsion at a concentration of 1/200,50% Fenitrothion emulsion at a concentration of 1/1000,50% Dimethoate emulsion at a concentration of 1/1000 would be effective to the adults.Field tests showed that when 95% of the adult have emerged,spraying 10% BHC or the Ultra-lower-volume spray(emulsion)would give good result.Pruning away weak branches to strengthen the fruitgenetic branches and the strong vegetative branches in winter would also give effective control.To protect and use such a natural enemy as Torymidae would be a hopeful way to control the gall wasps. |
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