论文部分内容阅读
向日葵螟(Homoeosoma nabulellum)是向日葵的主要害虫。以幼虫态危害较重,一般被害率达20%左右。向日葵螟在我国主要分布在吉林省、黑龙江、新疆等省、自治区,以吉林和黑龙江省为重,吉林省主要分布在长春地区,吉林西部地区发生较轻。1983、1984年在吉林农安县开安乡、华家乡和前岗乡调查,有虫葵盘达63—83%,籽粒虫食率达14.9—20%,高达40%左右。每个葵盘有幼虫1—5头,多者达10—15头。为探讨更为有效的防治方法,现将两年来我们对向日葵螟发生规律和综合防治的初步研究报道如下。
Sunflower borer (Homoeosoma nabulellum) is a major pest of sunflower. To larvae more serious harm, the general rate of about 20% victimization. Sunflower borer is mainly distributed in Jilin Province, Heilongjiang, Xinjiang and other provinces and autonomous regions in our country, with Jilin and Heilongjiang as the most important, Jilin Province is mainly distributed in Changchun, and the western region of Jilin is less serious. In 1983 and 1984, they were investigated in Kaian, Huajian and Qiangang townships, Nong’an County, Jilin Province, with 63-83% of Helicopteris palustris and worm pests of 14.9-20% and 40% or so. 1-5 larvae per sunflower disk, more than 10-15 head. In order to explore a more effective method of prevention and treatment, now we two years ago, the occurrence of sunflower borers and prevention and control of a preliminary study reported below.