Interplanting with Onobrychis Viciaefolia in slope forestland would promot seedling growth, make full use of land and increase the economical return, The ratio of living through the winter by applying artificial three-dimension types can increase 65 percent compared with the ones by level planting, Covering it with soil before winter is the key measure in field management after planted, The rational height to be cut is 5 10 cm.