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大果沙枣广泛分布于我国西北、华北及东北的西部,是一种抗旱耐瘠薄的树种。可以用于营造水土保持林、饲料林、薪材林。它的根瘤可以固氮,增加土壤的肥力。在农林生产中有重要的经济意义。该病影响树木的生长及固氮的效果。 沙枣褐斑病在我同最初在江苏省的胡颓子上为害。以后在内蒙、宁夏、新疆及辽宁、吉林省的西部沙枣上发生。沈阳地区从1979年开始引种大果沙枣(Elaeagnus moorcroftii wall·)作为固氮树种。1979年至1980年在寄主生长旺季虽然经常调查,未见该病害的发生。1981年10月在田间发现个别病斑,同年11月在温室盆栽苗上采到典型的病害标本。1982年田间及温室大量发病。
Big jujube widely distributed in Northwest China, North China and the western part of the northeast, is a drought resistant barren tree species. Can be used to create water and soil conservation forest, feed forest, fuel woods. Its nodules can fix nitrogen and increase soil fertility. In agriculture and forestry production has important economic significance. The disease affects the growth of trees and the effect of nitrogen fixation. The jujube leaf spot is damaging to me on the original Elaeagnus in Jiangsu Province. Later in Inner Mongolia, Ningxia, Xinjiang and Liaoning, Jilin Province, jujube occurred on the west. Since 1979, Shenyang has introduced Elaeagnus moorcroftii wall as a nitrogen-fixing species. From 1979 to 1980, although the host growing season was frequently investigated, no occurrence of the disease was observed. In October 1981, a few spots were found in the field. In November of the same year, typical disease samples were collected from potted plants in greenhouse. In 1982 a large number of fields and greenhouse disease.