grass bermuda grass and augustine grass etc the seeds are mixed with the liquid pulp well to form a well mixed fiber pulp containing the seeds for grass vegetation and then the mixed fiber pulp containing the seeds for grass vegetation is sprayed on the soil surface of the mountainside land please refer to fig2 which is a soil profile according to the preferred embodiment of the present invention the soil profile shown in fig2 includes the liquid mulching mat 11 the topsoil 13 and the rock stratum 14 wherein the seeds 12 for grass vegetation are well distributed in the liquid mulching mat 11 one to two weeks later the fiber mulching mat will be formed on the soil surface if the fiber pulp containing the seeds for grass vegetation is used in mountainside land the seeds will germinate after a period of time this will be helpful to the maintenance of the trees and vegetative cover for preventing soil collapse so the water and soil conservation is achieved 3 the utilization of the liquid fiber mulching mat of waste rice straws in the arid area for preventing desertification and dust storm the starch powder is added into the biopulp fiber solution of waste rice straws at the concentration of 0 6 w v according to a preferred embodiment of the present invention water is added into the biopulp fiber solution by the volume of ten times of the biopulp fiber solution the biopulp fiber solution the alginic salt and water are mixed well for forming a fiber pulp and then the mixed substrate of the liquid fiber mulching mat containing the seeds for grass vegetation is directly applied on the.