节水抗旱新材料在榆林沙区造林中的应用研究

A Study on the Application of the New Water-Saving Materials in Yulin's Desert Areas

造林成活率的高低直接关系到造林的成败。在干旱半干旱地区制约造林成活率的因素,除了适地适树和采用先进适用的造林技术外,水分条件尤为重要。对筛选出的节水抗旱新材料液态膜、旱育苗、移植袋、固体水和吸水剂等在榆林沙区常用绿化造林乔灌木树种樟子松、油松、侧柏、园柏、杨树、花棒、踏郎等进行了对比试验研究。试验结果表明,这些新材料不但能提高造林成活率和保存率,而且能够促进其生长发育,特别是旱育苗系列产品改变了节水抗旱材料大多采用的物理方法,从植物生理学角度出发,培养苗木的抗旱基因,实现节水的目的。因此,这些节水抗旱新材料可在生产中广泛应用,推广前景广阔。

Success or failure of afforestation depends very much on afforestation survival rate. Water is one of the most important factors affecting the survival rate in arid and semi - arid regions in addition to appropriate advanced afforestation techniques. This paper is a report on the experiment intended for the application of such new water - saving materials as liquid membrane, transplanted bags, solid water and water - absorbing pharmaceuticals in the planting of Pinus sylvestris L. , var. mongolica Litv, Pinus tabulaeformis carr, Platycladus orientalis Franco, Sabin chinensis Ant, populus, Hedysarum scoparium Fisch. Et Mey, Hedysarum mongolicum Turcz. etc in Yulin~ desert areas. The experimental results lead to the findings that these new materials can not only increase the afforestation survival rate but is helpful to the growth of trees. Therefore, these water - saving materials can be widely used and extensively popularized in the afforestation in desert regions.