| 摘要: |
板薯雅角叶蜂主要为害大薯(又名板薯)和薯蓣(又名淮山药)两种植物。在南宁市郊区一年发生不完全五代(含越冬代)。以老熟幼虫在土中结茧越冬,翌年4月下旬成虫羽化。成虫羽化后即交尾产卵,一雌蜂产卵36-178粒。幼虫期平均15.3天,成虫期4.3天,卵期6.5天,蛹期(含茧中的幼虫)21.7天。幼虫有群居习性,在饲料不足的情况下,便取食寄主物的老叶和嫩茎表皮。
室内测定和田间试验表明,喷2.5%溴氰菊酯10000倍,敌敌畏1000倍,乐果1000倍液,对大龄幼虫防治效果均达100%。 |
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| A PRELIMINARY STUDY ON THE CHINESE YAM SAWFLY RHADINOCERAEA SP. |
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Ji Honegxian
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| (Instiiute of Biology, Guangxi Academy of Sciences) |
| Abstract: |
The chinese yam sauwfly Rhadinoceraea SP.mainly damages the Chinese yam Diosscorea data Linn and D.batatas Dəcne.In the suburb of Nannrng there are 4.5 generations of Rhadinoceraea SP.occurring every year.They overwinter with mature larvae in soil.The adults areemergence in late Apple next year and females immediately lay eggs after mating.A femal oviposits 36——178 eggs.The average time for adult stage is 4.3 days, eggs stage is 6.5 days, larva stage is 15.3 days, pupa stage is 21.7 days.The Larvae have the habit of living in groupd.When the young leaf was consumed mature larva will take old leaf or epidermis or young stem of the host plant as the food.
The determination in room and experience in the field show that Rhadinoceraea Sp.can be controlled by spraying 2.5% decamethrin (1:10000), dimethoate (1:1000), dichlorvos (1:1000).The prevent ioneffect reaches 100%. |
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