榆树县应用松毛虫赤眼蜂防治玉米螟的效果  

AN EVALUATION OF THE EFFICACY OF LARGE SCALE RELEASING TRICHOGRAMMA DENDROLIMI AGAINST ASIAN CORN BORER IN YUSHU COUNTY

作　　者：刘佐政 崔永余 万邦英 王承纶[2] 崔德君[2] 路红[2] 王国学[2] 于凤兰 

机构地区：[1]吉林省榆树县植保站 [2]吉林省农科院植保所 [3]吉林省植保站

出　　处：《生物防治通报》1990年第4期148-150,共3页

摘　　要：1986～1989年,经157万亩大面积应用松毛虫赤眼蜂防冶玉米螟的结果表明,当玉米田间螟卵发生初期和盛前期,以每亩1.1～1.5万头,分两次放蜂,卵粒寄生率为58.1～79.4％。放蜂区比未放蜂的对照区可降低被害株率41～64.4％,平均百株螟虫可减退66.6～85.9％,有效地控制了玉米螟对玉米的危害,每亩可挽回损失34.7公斤,经济效益显著。现已列为吉林省松辽平原玉米带防冶玉米螟的重要措施。During 1986 to 1989, mass reared Trichogramma dendrolimi was released in an area of 100,000 ha of corn in Yushu Co., Jilin Province to control Asian corn borer, Ostrinia furnacalis [Lep.: Pyralidae]. The releases were made at the beginning and early peak of corn borer egg appearances, respectively, at the rates of 16,500-22,500 wasps/ha. The egg parasitization was 58.1-79.4%. The percent infected corn plants and the number of larvae per 100 stalks were reduced by 66.6-85.9% and 41-64.4%, respectively, in comparison with that in the unreleased check fields. An estimated yield increase of 530.5 kg/ha was obtained in the releasing fields. The releases also gave a 1:35.2 ratio in the cost/benefit analysis.

关 键 词：松毛虫赤眼蜂 防治 玉米螟 

分 类 号：S476.3[农业科学—农业昆虫与害虫防治]