Planting trees and grasses is one of main measures for soil and waterconservation. There is not its own character in the work and expectingbenefits yet in the south of Shaanxi, for people pay little attention tothe method of planting and selecting tree and grass seeds. Now it is thetime for us to spread the advanced method of soil preparation for affores-tation planting trees in strip (or strip planting), and extend plantingtrees and grasses that is suitable for growing in the area, have bettersoil and water conservation benefits and economic value.