| Giving up cultivation and resuming grass,developing grass industry is the fundamental measures for the environmental construction of the farming-pastoral ecotone in northern China.In order to impulse the development of grass industry,the paper analyzed the problems in the development of grass industry,established the technical system of grass industry propulsion that includes dry farming techniques,molding moisture and keeping soil techniques,adjusting farming and animal husbandry structure and high yield planting techniques of clover,and introduced the application effects of that technical system in Ningnan test area. |