“猪—沼—果”能源生态农业模式在龙槐村试验初见成效为了提高农村能源的综合效益，礼县永兴乡龙槐村试验了北方地区“猪—沼—果”能源生态农业模式，使沼气池、畜禽舍、厕所、果树达到“四结合”，从而把农村能源与发展庭院经济、保护生态环境有机地结合起来。礼县永兴... “Pig - Marsh - fruit” energy eco-agriculture model in the trial of Longhuai village initial success In order to improve the overall efficiency of rural energy, the county of Yongxing Township Longhuai test the northern region of “pig - marsh - fruit” eco-agricultural energy model , So that digesters, livestock and poultry houses, toilets, fruit trees to achieve “four combination”, so that the rural energy and the development of the courtyard economy, ecological protection and organic combination. Li County Yongxing ...