Abstract: Polymer stabilizers can improve the structure of sandy soil,and may be used in controlling the soil desertification.The effects of non woody lignosulfonate and its grafted polymers on stabilizing sandy soil were studied.It is suggested that the lignosulfonate itself is not an applicable stabilizer,but after grafted with acrylic monomers its efficiency on sandy soil stabilization is improved.The grafted polymers are sprayed on the surface of sandy soil,with application dosage of 10g/m²,the sandy soil can withstand wind erosion with speed of 76km/h.By polymers grafted with non ionic monomers,the sandy soil has higher resistance on water erosion.The polymer stabilizers applicable for improving sandy soil should have higher molecular weight,certain hydrophilicity and degradability,and be economical and environment friendly.

Key words: sandy soil stabilizer, lignosulfonate, acrylic acid, acrylamide