摘要
本试验通过选择适应性强的优良豆科牧草沙打旺(Astragalus adsurgens)和红豆草(Onobrychis Viciaefolia)春季播种及采用隔带水平带状整地的改造方式,建立的半人工草地生长茂密,植被覆盖度达80%～85%以上。沙打旺改良草地8年内平均亩产鲜草671.3kg;红豆草改良草地3年内平均亩产鲜草1035.4kg,比荒坡改造前分别提高5.7倍和9.4倍,治理效益比较显著。本试验研究初步探索了黄土丘陵区干旱阳坡的治理途径和对策。
The experiment wes conducted by selecting fine legume species such as Astragalus adsurgens and Onobrychis viciesolia with very good adaptability to sow them in spring and every other level strip land preparation on the basis of which semi-artificial grassland was established. The grassland grew so vigoriously that the vegetation cover reached over 80‰～85%. Astragalus adsurgens used to improve grassland has had an average per mu fresh forage production of 671.3 kg within 8 years, while Onobrychis viciesolia used to improve grassland has had an average per mu fresh forage production of 1 035.4kg, having an increase of 5.7 times and 9.4 times as high as those prior to the wasted slope improvement with an apparent controlling benefit obtained. This experiment study also probe into the controlling approaches and countermeasures of dry slopes facing the sun in the loess hilly area.
出处
《水土保持通报》
CSCD
北大核心
1991年第4期33-36,共4页
Bulletin of Soil and Water Conservation
关键词
黄土丘陵区
干旱
阳坡
治理
the loess hilly area dry slope facing the sun controlling approach
