Abstract: Ulanbuhe desert is one of the eight largest deserts in China. It is located on the transitional zone between semi-drought and drought area,and could be easily desertified further. The paper analyzed the problems existed in the process of sand fixing vegetation restoration and resource utilization, which mainly included species selection and stabilization, natural vegetation being destroyed around oasis,and the possible effect of oasis scale.

Key words: Plant ethanol extract, Pesticides, Myzus persicae, Lipaphis erysimi, Deterrent index, Interferential index of population control