【摘要】 为了对苜蓿Medicagosativa的长效生态、绿色环保等方面作一推广介绍,对宁夏干旱地区常见的苜蓿、青贮玉米Zeamays种植模式进行调查分析。结果表明,苜蓿干草和折干后的青贮玉米的生产成本基本接近,分别为179 1和183 3元/t;两者产生的经济效益也很接近,分别为4521和4369元/hm2;从营养价值分析,苜蓿的粗蛋白产量为1939 2kg/hm2,青贮玉米的粗蛋白产量为1744 1kg/hm2,苜蓿具有明显优势;从间接效益和生态效益分析,苜蓿更为突出。另外,通过开展饲用植物新品种的选优和加强饲草的栽培管理能够提高牧草产量与品质,延长苜蓿的利用年限也是降低生产成本的有效方法。更多还原

【Abstract】 The planting pattern of alfalfa and silage maize in arid region of Ningxia was investigated in order to introduce and extend the long-term ecological and environment conservation effect of alfalfa. The results showed that the production cost of alfalfa hay and silage maize is 179.1 yuan per ton and 183.3 yuan per ton, respectively. The economic benefits of both are close, with 4521 yuan per hm~2 for alfalfa and 4369 yuan per hm~2 for silage maize. While alfalfa had obvious advantage in nutritive value, containing 1 939.2 kg/hm~2crude protein, much higher than silage maize (1 744.1 kg/hm~2 crude protein). The indirect and ecological profit of alfalfa was also significant. In addition, the yield and quality of alfalfa could be improved by means of breeding and cultivation and management enhancement. It was also an effective way to reduce production cost by prolonging application term of alfalfa.更多还原