沙棘象(Curculio sp.)是我省1987年新发现的沙棘种实害虫,广泛分布于陕北、渭北、关山等沙棘林区。被害率常达20％以上,个别地区被害率达80％。为探索对这一害虫经济有效的控制方法,我们于1987—1988年在陇县关山地区对该虫生活习性进行了研究。现将该虫在沙棘上的空间分布研究结果整理于后。1.研究方法在陇县关山梁上沙棘较密集林区,选择不同坡向、不同林龄的标准地10块。样地大小为100×100m。在每一样地内每隔一行抽取10株样木,10个样地共抽取1000株。然后详细记载各株的虫口数,并列成频数分布表 Seabuckthorn (Curculio sp.) Is a newly discovered species of seabuckthorn pests in our province in 1987, widely distributed in the seabuckthorn forest areas such as Northern Shaanxi, Weibei, and Guanshan. The rate of victimization is often up to 20%, with 80% being victimized in some areas. To explore a cost-effective control method for this pest, we studied the pest’s habits in Guanshan, Long County from 1987 to 1988. Now the insects in the sea buckthorn on the spatial distribution of the results of the study. 1. Research methods In Longxian Guan Shan Liang more seabuckthorn forest, select different aspect, different age of the standard 10. The sample size is 100 × 100m. In each sample, 10 samples of wood were taken from every other row, and 1000 samples were taken from 10 samples. Then detailed records of each strain of insect population, and arranged into frequency distribution table