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沙枣(Elaeagnus angustifolia L.)具有耐盐碱、抗风沙、繁殖容易等特点,是西北荒漠、半荒漠地区的重要造林树种。1983年我们在内蒙古阿拉善左旗对碱滩门固沙林进行调查时,发现大部分沙枣枯梢、死亡,整个沙枣林出现衰退现象。本文就此问题进行粗浅探讨。一、沙枣衷退状况内蒙古阿拉善左旗通湖治沙站,1957-1970年在碱滩门作业区的沙丘间低地和盐碱滩地上营造了23,151亩沙枣林。在六十年代时平均造林成活率为57％,现在的保存面积为28％。沙枣大面积枯梢和死亡是从1965年开始的。最初是在该作业区南部的盐碱滩地上,有
Elaeagnus angustifolia L. is characterized by its resistance to salt and alkali, wind-blown sand and easy breeding. It is an important tree species for afforestation in the desert and semi-desert regions of the northwest. In 1983, when we investigated the Althaedesa sand bank in Alxa Zuoqi, Inner Mongolia, most of the jujube appeared dead and the entire jujube forest had a recession. This article on the issue of shallow discussion. First, withdrawal of sand jujube situation Alashan Banner Inner Mongolia Tonghu governance station, from 1957 to 1970 in the alkaline area of sand dune operation and saline beach ground to create 23,151 mus of jujube forest. In the sixties the average afforestation survival rate was 57% and the current preservation area was 28%. Larvae jujube large dead and death is from 1965 onwards. It was originally on the ground of saline-alkali beach in the southern part of this area