黄土丘陵区软埂梯田建设与维护监测研究

Research on the Supervision to Technic Construction and Maintenance of Soft Ridge Terrace in Loess Hilly-gully Region

软埂梯田选择"接近自然"的技术对坡改梯进行了技术改进,在工程方面设计采用接近黄土自然休止角40～45°为梯田埂坡设计坡度,从而从根本上消除了地埂重力侵蚀危害。试验研究表明,软埂梯田每年的维护费用为592.5元/hm2,是硬埂维护费用的55.5%;修筑费用为435元/hm2,是硬埂的24.9%。软埂梯田具有造价低、易维护、修筑和管护简便等特点,是水平梯田建设的重要发展方向。

Selecting the technology of 'close to nature',soft ridge terrace changes sloping field into terrace.In engineering,the gradient of terrace was designed to 40～50°,which closed to loess natural caesura angle and eradicated the harm of erosion by ridge gravity.The research indicated that the maintenance fee of soft ridge terrace was 435 yuan per hm^2 each year,which was 55.5% of hard ridge.The construction fee was 592.5 yuan per hm^2,which was 24.9% of hard ridge. As a whole,soft ridge terrace is character ized by low-cost,easy maintenance and handy construction and supervision,which is the important development orientation of the aclinic terrace.