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榆树是我国“三北”防护林工程体系建设的主要树种之一,特别是乌盟后山地区榆树造林面积约占整个造林面积的80%以上。榆树耐低温、耐干旱、耐瘠薄。也比较能抗盐碱,深受广大群众欢迎。但近几年来,由于种种原因造成榆树大面积的死亡。据统计乌盟后山地区八○年死亡榆树面积约7万亩。部分林场榆树死亡率达80%,给林业生产带来很大损失。为了控制榆树的死亡,我们于八○年六月到十月,协同乌盟森林病虫防治站及有关旗县林业
Elm is one of the main tree species in the “Three Norths” shelterbelt project in China. Especially, the elm afforestation area in the mountainous area of Umhlang accounts for more than 80% of the total afforestation area. Elm low temperature, drought resistance, barren. Also more resistant to salt, welcomed by the masses. However, in recent years, due to various reasons, large areas of elm trees died. According to statistics, after the UPS in the mountainous area in 1980, about 70,000 mu of elm trees died. Part of the forest elm mortality rate of 80%, to forest production has brought great losses. In order to control the death of the elm trees, we worked with the UiM Forest Pest Control Station and the Qixian Forestry Station from June to October 1980