孝感板栗象的发生规律及防治研究

孝感地区板栗主要害虫剪枝栎实象、栗实象、板栗雪片象对板栗生产构成严重威胁，影响板栗的产量与质量。3种象虫的成虫出土期各不相同，分布为害程度也有差异。根据各地虫情，在板栗象成虫出土期前10d，在树盘、园地进行了土壤药剂处理，同年在堆果场、仓库进行了土壤、地面药剂处理、用全生境土壤、地面药剂处理法来防治板栗象虫，能有效控制其为害。

A study on the occurring law and the control of snout beetle Chinese chestnut in Xiaogan

Cyllorhynchites ursulus Roelofs,Curculio davidi Fairmaie and Niphades castanea Chao are main species of snout beetles on Chinese chestnut in Xiaogan area,Hubei.The periods of their adults coming up out of the ground,their distributions and damage to Chinese chestnut are different.According to the pest situations of different places,the soil in chestnut orchard and under the trees was treated with insecticide ten days before period of coming out of the ground,and then,the soil of storehouse of Chinese chestnut was treated with insecticide in the same year.The above mentioned methods proved effective to control the pest species on Chinese chestnut.