摘要
现行的改良河西硫酸盐盐渍地的生物学方法主要有三种:利用耐盐牧草(如碱茅)建立人工草地的方法适于有水利条件的地区应用,在地下水位较低且排水良好的条件下可进一步发展草粮轮作;封育及补播等改良措施尤其适用于地下水位较高、较为潮湿的大面积盐渍化草地改良;乔灌草配置改良盐渍地的方法特别适用于风沙严重的宜林盐渍地,立体配置,作为护牧林带或生物围栏能发挥多方面的效益.
Three biological measure to improve the sulphated soil in Hexi Corridor of Gansu Province are i showed as follows: (1) The establishment of the salt-enduring grass ley is adapted to the land under irrigation ,it can develop the rotation of the grass and crop in the region of the low water table and good drainage. (2) The measures of closing and reseeding on saline grassland are especially adopted to improve large area saline meadow. (3) The combination of trees,shrubs and grasses is used to improve the tree-growing saline land of windy and sandy area,their vertical combination and the tree stripe for the ley protection and biological fence can make great benefits.
出处
《中国草地》
CSCD
1991年第2期37-42,共6页
Grassland of China
基金
国家自然科学基金资助项目
