河北省怀安县地处干旱丘陵山区,全年降水量仅400毫米,而又大部分集中在7～9月。过去,他们在治理荒坡中,习惯于采取鱼鳞坑、水平沟等传统整地方法,由于工程密布,普遍分散水势,所以哪个工程内的蓄水量也不足,影响了植物的正常生长。近年来,他们针对本县降水量少且又分布不匀的特点,在治理荒坡中创造了一种“大水分散,小水集中”的新整地措施——隔坡水平带,收到了蓄水保土和促进植物生长的双重效益。具体做法是: 1.在小于25度的缓坡上,每隔6～8米沿等高线打一条水平埂,长度因地形而定。要求埂高0.6米,顶宽0.4米,底宽1米,踩实拍紧。 2.把里侧坡上0.2米厚的表土铲入起土的沟内,再把生土起高垫低,筑成1～1.5米宽的水平带。然后, Huai’an County, Hebei Province, is located in arid and hilly mountains with annual rainfall of only 400 millimeters, while most of it is concentrated in July-September. In the past, they were accustomed to adopting traditional methods of land preparation such as fish tank pitching and horizontal ditches in harnessing barren slopes. Due to the densely-distributed project and widespread water potential, which of the projects lacked enough water to affect the normal growth of plants. In recent years, in response to the small amount of rainfall in the county and their uneven distribution, they created a new site preparation plan for “scattered large water and concentrated small water” in the management of barren slopes - the sloping horizontal belt and the receipt of storage Water and soil conservation and promote the dual benefits of plant growth. The specific approach is: 1. In less than 25 degrees on the gentle slope, every 6 to 8 meters along the contour to hit a level of 埂, length due to the terrain. Requirements 埂 0.6 meters high, top width of 0.4 meters, the bottom width of 1 meter, step on real shot tight. 2 to the side slope of 0.2 meters thick topsoil shovel into the soil from the trench, and then raise the ground from the high pad, built 1 to 1.5 meters wide with a horizontal band. then,