Study on shrubgrass combined mode in the hotarid valley grassland

This paper selected 8 combined modes of 7 shrub and grass varieties as the materials, took the degradation shrub grassland as control, the survival rate, soil and water conservation function and aboveground biomass of shrubgrass combined modes were studied. The result showed that various biological characteristics of Cajanus cajan, Leucaena leucocephala, and graminaceous Setaria sphacelata cv. Narok and Legum plant as Macroptilum atropurpureum were excellent. On the contrary, Festuca arundinacea,Trifolium repens and T. hybridum were not adapted well to grow in the jinsha river hotarid valley, they could not pass over the hotarid season. By the study of soil and water conservation function and aboveground biomass of various shrubgrass combined modes, the optimal shrubgrass combined mode was selected as C. cajan+S. sphacelata+ F. arundinacea+M. atropurpureum+T. repens+T. hybridum in the hotarid valley.