关键词: 鄂尔多斯沙区, 飞播, 固沙技术, 植被管理利用

Abstract: Based on the research and practice of sand binding techniques by air seeding Hedysarum laeve in Ordos sandy area, a set of effective air seeding techniques and plant management and utilization measures have been concluded. The techniques are as follows:① to choice sandy land types suitable for air seeding; ② the suitable inter seeding plants and their seeding ratio are Hedysarum laeve (675 kg/hm²)+Artemisia sphaerocephala (30 kg/hm²)+Astragahus adsurgens or melilolus albus (15 kg/hm²); ③ suitable seedtime is in the third ten day of May to the first or second ten days of June. The managemental measures include promptly preventing damages from mice, rabbits and insects and plant dieases; establishing sand barrier for seedlings, thinning and regenerating in time. At last, the rational utilization measures consist of setting up seed collecting base on gentle sandy area, processing livestock feed with plant's branches and leaves, and making use of vegetation as Winter pasture land when the cover arrives at 60%.

Key words: Ordos sandy area, Air seeding, Sand binding techniques, Management and utilization of plant