论文部分内容阅读
三带櫟尺蠖(Larerannis filipjevi Wehrli)、薄翅櫟尺蠖(Inurois fletcheri Inoue)、白斑櫟尺蠖(Erannis dira Butler),是陕西楼观台林区栓皮櫟(Quercus variabilis Bluma)的主要食叶害虫,严重时整个树冠叶片全部被吃光,仅残存主脉。 国内已往除对白斑櫟尺蠖稍有观察外,其他两种尚无记载,更无这方面的系统观察和研究。但目前这几种虫在陕西楼观台林区对栓皮櫟林年年猖獗危害,使这一重要经济树种的生理机制受到障碍,因而严重影响了国民经济对种子和栓皮的需要。为了杜绝其危害,以保证栓皮櫟健壮生长,我们从1961年开始在楼观台林区对其生活习性和防治办法进行了研究,现将三年来观察试验的一部分结果发表如下,以供参考。
Larerannis filipjevi Wehrli, Inurois fletcheri Inoue and Erannis dira Butler are the major leaf-eating pests of Quercus variabilis Bluma in Louguantitai, Shaanxi Province, When the entire canopy leaves were eaten, leaving only the main vein. In addition to the previous domestic observation on the oak scale oak slightly observed, the other two have not been documented, but no systematic observation and research in this area. However, these insects now have rampant damage to the cork oak forest in Louguilin, Shaanxi Province every year, hampering the physiological mechanism of this important economic tree species and seriously affecting the national economy’s need for seeds and cork. In order to eliminate its hazards and ensure robust growth of Quercus variabilis, we studied the living habits and methods of prevention and control in Louguantitulin District from 1961. The results of some of the three years of observation and experiment are hereby published for reference.