论文部分内容阅读
贺兰山东麓约有半荒漠草原300万亩,是我区有待开发利用的一大自然资源,在该地区发展林业生产具有重要意义。半荒漠地区限制树木生长的关键因素是干旱缺水,关于贺兰山东麓半荒漠地区树种抗旱生理方面的资料尚未见报道,弄清半荒漠地带缺水条件下一些树种适应干旱的途径,在生产上有
About 3 million mu of semi-desert steppe at the foot of Helan Mountain is a great natural resource to be exploited in our region. It is of great significance to develop forestry production in this region. The key factor restricting the growth of trees in the semi-desert area is drought and water shortage. There is no report about the drought resistance physiology of tree species in the semi-desert area at the foot of the Helan Mountain. In order to understand the drought-tolerant measures of some tree species in the semi-desert area, There