掌握虫情,飞防沙枣木虱效果好

• 作 者: 封益民
• 机 构: 沙枣木虱防治协作小组 报导员
• 出 处: 甘肃农业科技
• 发表日期: 1977年06期
• 关键词: 沙枣木虱 沙枣 枣林 桂香柳 防风固沙林 河西地区 枯梢 木虱 七十 主要虫害

沙枣又名桂香柳,是我省河西地区大面积营造防风固沙林带良好的乡土树种。一九六七年以来,木虱已发展成为沙枣的主要虫害,轻者成片林木枯梢,重者致死。张掖机械林场所属七万多亩沙枣林普遍遭受该虫危害,其中九龙江分场的四万多亩沙枣林,有一万多亩平均年产沙枣由过去的七十多万斤降为二十多万斤,减产80％左右。有些虫害严重的,已经干枯死亡。这不仅严重影响国

Saussurea, also known as cinnamon, is a large area in Hexi province to create a good wind and sand fixation with native tree species. Since 1967, the psyllids have become the major insect pests of jujube, the light into the forest-shoots, the most fatal. Zhangye mechanical forest more than 70,000 acres of jujube forest jujube suffered widespread insects, including Jiulongjiang sub-40,000 acres of jujube forest, with an average annual output of more than 10,000 acres of jujube from the past more than 70 kg Down to more than 200,000 pounds, about 80% cut. Some pests are serious and have died. This not only seriously affects the country