【摘要】 通过野外观察及室内饲养相结合的方法 ,进行桑褐刺蛾的生物学习性及防治研究。研究发现桑褐刺蛾在浙江莫干山 1a发生 2代 ,以老熟幼虫在树下土壤内做茧越冬 ,翌年 5月初化蛹 ,成虫于 5月末始见羽化 ,6月中旬始见初孵幼虫。幼虫有 8个龄期。以树干主枝打孔注射农药方法 ,对桑褐刺蛾进行防治研究。在幼虫出现前 2周在悬铃木主枝上按 1cm胸径打孔注射 2mL 50 %甲胺磷乳油、 40 %氧化乐果乳油和 50 %久效磷水剂 ,平均校正死亡率分别为 85 8% ,84 8%和 82 6%。图 1表 4参 8更多还原

【Abstract】 The biological characteristics of Setora postornata was systematically described by means of observation in nature and laboratory.The research shows that Setora postornata occurs two generations per year at Mt.Mogan in Zhejiang Provice and overwinters with elder larva in the soil.Its pupae hatch at the beginning of May,and adults appear at the end of May.The method of injection pesticides in bored holes on trunks was firstly applied to controlling  Setora postornata on Platanus acerifolia,P. orientalis,and P. occidentalis.Omethoate 40EC,methamidophos 50EC and monocrotophos 50 aqueous solution were injected into the main brances of three Platanus species before larva,appearing two weeks,and the average corrected mortality of larva could reach 84 8%,82 6% and 85 5%.更多还原