一、坡改梯的目的和意义山区农业二次创业的主题是：以实施天然林保护、退耕还林、坡改梯台地、五小水利工程为重点，大力调整种植业结构，增加农民收入。其中实施坡改台地建设工作就是变“三跑”（跑土、跑水、跑肥）地为“三保”（保上、保水、保肥）地，也是稳定解决贫困山 First, the purpose and significance of the slope to change the ladder The second theme of agriculture in mountainous areas is: to implement the natural forest protection, returning farmland to forest, slope to terrace, five small water conservancy project as the focus, vigorously adjust the planting structure, increase peasant income. Among them, the construction work of slope alteration platform construction is to change “three runs” (running earth, running water, run fertilizer) to “three guarantees” (keeping, keeping water and keeping fat)