论文部分内容阅读
棘禾草螟(Chilo hyrax Bleszynski)是蛀食荻芦茎秆的大害虫。近年来,在我省荻芦的被害株率为98％以上,对荻芦的产量与质量影响极大。通过系统调查研究,明确了棘禾草螟是湖南、湖北,江西、江苏等省荻芦最严重的害虫。棘禾草螟在湖南沅江1年发生2—3代,以老熟幼虫多数在荻芦蔸中、少数在残秆中越冬。影响其越冬虫量的因子,主要是收割芦苇时留蔸太高,放火烧苇田不适时或不放火烧苇田。防治棘禾草螟,主要采取“齐泥收割荻芦”;“适时放火烧苇田”;化学防治重点掌握第一代卵孵化高峰期,施用以杀虫双为主的农药。这一综合措施,对控制棘禾草螟的为害效果显著。
Chilo hyrax Bleszynski is a large pest of the borer. In recent years, the diarrhea rate of Mali in our province is more than 98%, which has a great impact on the yield and quality of Diwuli. Through systematic investigation, it has been clarified that Spinibarbus is the most serious insect pest in Hunan, Hubei, Jiangxi and Jiangsu provinces. Spiny grass borer occurs in Hunan Yuanjiang River 2-3 generations a year, most of mature larvae in the reed, the few in winter in the residual stalk. The factors that affect the amount of overwintering insect pests are mainly that the reeds are too high when the reeds are reared, the reed fields are not set when the reeds are disrupted or the fire is reeling. Control Spinosae grasshopper, the main take “Qi Di reed harvest Di”; “timely set fire reed field”; chemical control focus on the first generation of egg hatching peak, the application of insecticide double-based pesticides. This comprehensive measure has significant effect on the control of Spinosriella sibirica.