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赤眼蜂防治露地番茄二代棉铃虫试验初报

PLANT PROTECTION TECHNOLOGY AND EXTENSION(2002)

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Abstract
2001年6~7月在密云县河南寨镇北单家庄村13.3hm2露地番茄田,应用松毛虫赤眼蜂(Trichogrammar dendrolimi)、螟黄赤眼蜂(T.chilonis)及近年筛选出的本地优势蜂种(种名待鉴定)共3种蜂进行不同蜂种不同蜂量防治番茄二代棉铃虫试验.每种蜂均设667m2放蜂量5万头、7万头、10万头3个处理.各处理放蜂均从见卵初期开始,每隔5d放1次,共放3次.另设空白对照.试验结果(表1)说明:
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