【摘要】 试验以京郊园林金龟的优势种毛黄鳃金龟为主要对象,较深入研究了其发生规律,为害特点和综防技术。结果表明毛黄鳃金龟为一年一代,以成虫在土中越冬,四月中、下旬为出土盛期.五月上旬为产卵盛期,六月上旬为卵孵化盛期.一、二、三龄幼虫的盛发期分别为六月上中旬,七月份和八月中旬.成虫出土始于地表温度12℃左右,每日出土比较集中于黄昏时刻,这是聚捕成虫、压低虫源基数的有利时期.产卵深度与土壤湿度关系极为密切。一龄幼虫为主要防治适期.采用倒茬、灌水、药剂防治和人工捕捉成虫等综合措施,可获得较为理想的防治效果.更多还原

【Abstract】 There were fifteen species of scarabs in the gardens of Beijing suburbs among which Metabolus flavesens Brenske,Holotrichia oblita(Faldermamn),Anomala chorpulenta Motschulsky and Holotrichia trichophora(Fairmaire)were more abun dant and more harmful than other scarabs.Authors made a thorough investiga- tion and study on the techniques of IPM regarding H.trichophora(a dominant species).The results showed that H.trichophora only occurred one generation each year.The adults overwintered undergroura,and the peak period of its em- erging from soil was the second and last ten days of April.The peak periods of laying and hatching were the first ten days of May and the first ten days of Ju- ne respectively.The peak periods of the first,second and third instar larvae were the first and second ten days of June,July and the second ten days of Au- gust respectively.The adults emerged from soil at dusk of every day in spring at about 12℃ for the earth’s surface and this tine is a good opportunity to catch adults fordepressing numbers of population.The depth of laying was significantly correlated with the humidity of soil.The first instar larvae were mainly sui- table period of control.The suitable period of controlling the larvae waspredicted and based on the investigation of eggs in the fields and the development stage of embryo.A good control could be obtained with the integrated measures of alternative planting,irrigating,applying pesticides and catching adults etc.更多还原