| 摘要: |
| 1991-1993年对陕西宁强县柿花象Aedenus sp.的分布为害、生物学、发生与环境及防治方法进行了初步研究。结果表明，该虫主要分布于陕南、川北和陇东南的秦巴山区，一年发生1代，以成虫在土壤里过冬，翌年4月中旬开始出蛰上树补充营养，5月中旬柿开花期成虫产卵花托皮下，6月上旬产卵幼果，幼虫蛀食为害引起落花落果。海拔800m处，弱树受害最重，树冠下部花受害重于树冠上部花。柿花初期喷布80%敌敌畏或50%对硫磷1000-1500倍液1-2次可控制危害。 |
| 关键词: 柿，柿花象，生物学，药剂防治 |
| DOI： |
| 分类号:S433 |
| 基金项目:陕西宁强县政府资助项目 |
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| Biological and Control of Aedenus sp.(Coleoptera,curculionidae) |
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| Abstract: |
| The distribution,biology,outbreak.environment and the control method
of flower一eating weevel of kaki persimmon(Aedenus sp.)in Ningqiang County,Shaanxi
were disoussed during 1991~1993.The results showed the insects mainly distributed
Qinling and Bashan Mountain areas in Southern Shaanxi,Northern Sichuan and Southeastern Gansu.The pests outbreak annually with the adults hibernating in eracks of soil
in the second 10 days of the next APril.The hibernated adults climed up the trees to lay
eggs on flower calyx and young fruits during the blooming season of the following year.
The larvae usually live on flowers and young fruits for nutrition suppliments which
caused blossom dropping and abscission of fruits.The damage varies significantly with
different elevation and tree growth vigour,and can be controlled effectively by spraying
80% nuvan or 50% one or two times of alkron on the tree in the earlier period of bloom. |
| Key words: Diospyros kaki,flower一eating weevil of kaki persimmon(Aedenus sp.),biology,chemical control |
