麦圆蜘蛛生物学特性与综合治理技术研究

选择湖北省孝感学院试验农场为试验基地,采用田间系统调查的方法,对麦圆蜘蛛的生物学特性进行了观察,并对综合治理技术进行了研究. 该螨在湖北孝感1 a发生2～3代,以成螨和卵在麦田根际土中越冬,全年以3月中下旬至4月上中旬发生最盛.采用冬春防治、保护和利用自然天敌,以及在低龄若螨高峰期选用20%好年冬乳油、10%溴氟菊酯乳油、2%罗素发乳油、10%必螨立克可湿性粉剂、20%氟*杀乳油、 4 0%氧化乐果乳油等药剂进行防治,均可收到较好的防治效果,其中20%好年冬乳油1 500倍液防效最好,校正防效达99%以上.

A Study on the Biological Character and IPM Techniques of Penthaleus major(Duges)

This study was carried out in experiment farm of Xiaogan college,Hubei province,and adopted the systemic sampling methods in fields.The observation on the biological of Penthaleus major (Duges)studied its was conducted IPM.The mite happens 2 or 3 generations per year in Xiaogan city,Hubiei province,and overwinters in adults or eggs in rhizosphere soil of wheats.The serious desserve period was from the second and last ten days of March to the first and second ten days of April.The results showed that the control effect was good when controling in winter and spring,protecting and utilizing its natural enemies and at the peak time of low instar nymphae,spraying insecticides such as:20% Marshal EC,10% Brofluthrinate EC,2%Rufast EC,10%Pyranica WP,20% Flucythrinate+Fenitrothion EC and 40% O EC.Among these,the effect of 20% Marshal EC(1 500 multiple),more then 99%,is the best.