摘要
以甘肃省华亭县青林沟小流域为研究对象,通过对该小流域自然条件和紫花苜蓿Medicagosativa生态习性的综合研究分析,确定了紫花苜蓿为当地发展埂坎牧草的首选草种,利用非生产用地的梯田埂坎种植紫花苜蓿72.8hm2,不仅使土地利用率提高5.5个百分点,且年增加草产量5154.24t,载畜量增加2824个羊单位,缓解了粮草争地矛盾,保护了地埂,减少了维修用工,也改善了生态环境,实现了流域生态和经济的可持续发展。
The natural conditions of Qinglingou watershed in loess plateau of Gansu were analyzed and the ecological properties of alfalfa were observed. Sowing 72.8 hectare alfalfa at non-production area of terrace bank, the rate of soil utilization, forage yield and livestock capacity were increased by 5.5% 5 154.24 tons and 2 824 sheep unit, respectively. The contrast of grain food and grasses was postponed, terrace bank was protected, maintenance expenses was reduced, ecological environment was improved and suataninable development of the ecology and economy of the watershed was realized. Therefore, alfalfa was selected as the best forage species sowing at terrace bank of Gansu loess plateau, China.
出处
《草业科学》
CAS
CSCD
2005年第9期32-34,共3页
Pratacultural Science
基金
世界银行贷款项目甘肃省黄土高原水土保持二期项目资助
关键词
青林沟
埂坎
苜蓿
发展潜力
Qinglingou
terrace bank
alfalfa
development potential
