论文部分内容阅读
沙地柏Sabina Vulgaris Antoine(Juniperus sabina Linn.)(陕北称臭柏,又名爬柏,双子柏、新疆园柏)。产于陕西北部、甘肃北部、青海东部沙地上,还产于新疆阿勒太、青河、天山。国外在西伯利亚、蒙古北部、中亚也有分布,是优良的灌木固沙树种,根深叶茂,四季常青。在陕北现集中分布在神木县大保当、榆林县红石桥、横山县白界等一带沙区。据资料记载,神木大保当一带在1958年前,就有天然臭柏林30多万亩。但近年来,侧柏毒蛾(Parocneria terebinthi stolzncri Draescke)严重发生,幼虫取食叶尖,轻者影响树木生长,重者造成大片臭柏死亡,使原已固定的沙丘,重新变成流动沙丘。害虫危害
Sabina Vulgaris Antoine (Juniperus sabina Linn.) (Northern Shaanxi said Sabina, also known as climbing cypress, cypress, Xinjiang Park cypress). Produced in northern Shaanxi, northern Gansu, Qinghai eastern sandy land, also produced in Xinjiang Aleta too, the Qinghe, Tianshan. Abroad in Siberia, northern Mongolia, Central Asia are also distributed, is an excellent shrub sand-fixing species, deep-rooted, evergreen. Concentration in northern Shaanxi are concentrated in Shenmu County Baodi, Yalong County Hongshiqiao, Hengshan County, Baijie sand area. According to the data records, Shenmu Dabaonang area before 1958, there are more than 300,000 acres of natural smelly Berlin. However, in recent years, Parocneria terebinthi stolzncri Draescke occurs seriously. The larvae feed on the tip of the leaves, while the light ones affect the growth of the trees. In severe cases, the death of large Sabina przewalskii causes the already fixed sand dunes to be turned into mobile sand dunes. Pest damage