论文部分内容阅读
甘蔗和木薯是热带、亚热带作物,对山坡地、沙洲地和盐碱地等边际性土地有较强的适应性,在蔗糖主产区广西、云南、广东、海南等地广泛种植。木薯燃料乙醇面临原料供应不足、价格上涨的问题。文章分析了以甘蔗作为燃料乙醇原料具有的优势,同时对我国长期食糖需求及支撑食糖需求的土地潜力进行了研究。研究表明,与木薯原料相比,以甘蔗原料生产燃料乙醇具有单位土地面积产量高、综合利用价值高、节能减排效果好等优势,同时具有保护环境、稳定食糖价格等作用。只要食糖价格合理,在保证我国粮食安全与食糖安全的前提下,通过实施间套种技术,近期可以实现100万t甘蔗燃料乙醇的产能,远期的产能目标为200万～300万t。
Sugarcane and cassava are tropical and subtropical crops and have strong adaptability to marginal lands such as hillsides, sandbanks and saline-alkali lands. They are widely planted in Guangxi, Yunnan, Guangdong and Hainan which are the main sucrose producing areas. Cassava fuel ethanol is facing the problem of insufficient supply of raw materials and rising prices. The article analyzes the advantages of sugarcane as fuel ethanol raw material, and studies the long-term sugar demand and the land potential of supporting sugar demand in our country. The research shows that compared with cassava raw materials, the production of fuel ethanol from sugarcane raw materials has the advantages of high land yield per unit area, high comprehensive utilization value, good energy-saving and emission reduction effect, etc. Meanwhile, it has the functions of protecting the environment and stabilizing the sugar price. As long as the price of sugar is reasonable, under the precondition of ensuring food security and sugar safety in our country, the production capacity of 1 million t of sugarcane fuel ethanol can be realized in the near future through the implementation of the intercropping technology. The long-term productivity target is 2 million to 3 million tons.