利用多年生牧草生产燃料乙醇前景

多年生牧草具有可再生、产量高、分布广、价格低廉、纤维素含量高等特点，采用其生产燃料乙醇不仅可以解决现阶段能源生产与粮食安全之间的矛盾，还可带来控制土壤侵蚀、减少农药化肥的污染、降低CO2排放量等生态效益。相比于粮食作物，在生产工艺发展的基础上，使用多年生牧草将大幅降低燃料乙醇的生产成本，带来良好的经济效益。阐述了利用多年生牧草生产燃料乙醇的研究现状，并在此基础上分析其生态优势与经济价值，介绍了几种可作为燃料乙醇原料开发的多年生牧草，为利用多年生牧草发展能源草业提供了科学依据。

Prospect of producing bio-ethanol fuel from perennial forage

Perennial forage had many merits such as reproducible ability,high yield,wild distribution,low price,high cellulose content,etc.Therefore,using perennial forage as feedstock of producing ethanol could solve the contradiction between energy production and food security,but also took ecological benefits such as controlling soil erosion,reducing pesticide and fertilizer pollution,reducing CO2 emission.Compared with grain crops,the use of perennial forage could decrease the ethanol production cost and brought g...