【摘要】 栗雪片象１年发生１代，幼虫在残留栗棚中潜伏越冬。每年７、８两月中旬是成、幼虫危害高峰期。采用５种农药作防治对比试验，表明以４０％氧化乐果２０００倍液和９５％敌百虫１０００倍液防效最佳。更多还原

【Abstract】 The snowflake weevil of chestnut,Niphades castanea Chao,is a pest damagingboth the twigs and the nut.The generation occurs once a year.The larvae overwinter by hidingin the surviving canopy of the chestnut tree,The imagoes and the larvae reach the peak ofdamage from mid July to mid August.In a control test against this pest ,five pesticides wereapplied. Comparatively,two of them proved good and effective , which are 40%oxidized Rogorwith 2000 times of diluent and 95%dipterex with l000 times of diluent.更多还原