毕节喀斯特石漠化治理生态农业模式构建

喀斯特石漠化已成为岩溶山区生态建设和社会经济可持续发展的重大障碍，受到各级政府、专家学者的高度重视和广泛关注。以贵州省毕节市老街村喀斯特石漠化土地利用为例，采用实地调查的方法获取研究数据，分析了研究区石漠化土地利用存在问题。在此基础上，遵循石漠化治理与产业化相结合原则、市场导向原则、替代产业培育原则、适地适种原则等喀斯特石漠化治理的一般原则；优化土地利用格局，设计由坡地保土耕作、桑草养殖、桑药种植、乡土廊道树篱、封山育林多种技术措施配套集成的综合治理方案，并通过与农村能源建设结合，构建桑草药粮种植＋蚕猪养殖＋沼气的生态农业发展模式，探索喀斯特石漠化区生态修复的有效途径。

ECO-AGRICULTURE MODEL IN THE KARST ROCKY DESERTIFICATION HARNESS OF BIJIE

Karst rocky desertification has been an obstacle to the eco-building and sustainable development of social economy, to which close attention has been widely paid by local government and experts. Taking as the case of the Karst rocky desertification land utilization in Laojie village of Bijie, Guizhou Province, this paper gets the research data by making on-the-spot investigation. It analyses the problems of the researching on Karst rocky desertification land utilization. And on this basis, following the principles of the building eco-agriculture model that combines rocky desertification harness with industrial development, of the guidance of market, of cultivation of substitution industrial, and that of taking measures suited to local conditions. It puts forward a plan of the eco-harness of Karst rocky desertification, which is about preventing soil erosion during the cultivation on hillside fields, growing mulberry and medicinal plants, constructing shortcut corridor hedge, closing off hills with woods to livestock grazing. By combining with energy construction, this paper also puts forward an eco-agriculture model of growing mulberry, medicinal plants and food, breeding silkworm and pigs and using methane. Finally, it explores the effective route of eco-repairing in the Karst rocky desertification mountainous area.