近年来养殖场沼气工程在中央大力支持下,取得了良好的发展。截止到2009年底全国已建设规模化养殖场沼气工程5.6万处,其中小型沼气工程3.4万处,占60.1%;中型沼气工程1.89万处,占33.75%,同时,全国各地开发出风格各异的沼气工程建设模式。由于各地畜禽场周边种植业、养殖 In recent years, the farm biogas project has made good progress with the strong support of the Central Government. By the end of 2009, there had been 56,000 biogas projects in large-scale farms in China, of which 34,000 were small-scale biogas projects, accounting for 60.1%; 18,900 medium-sized biogas projects accounting for 33.75%; meanwhile, various styles were developed nationwide Biogas construction model. As farms around the planting industry, breeding