【摘要】 在宁夏沙漠化地区开展了利用禾草制浆废液合成的新型生物质固沙材料对固沙和植物生长作用的研究。结果显示,在流动沙丘上喷施生物质固沙材料,可在24h内与表层沙粒快速形成固结层,具有良好的防风固沙作用,并可促进沙生植物的生长;木质素固沙材料1％～2％的浓度和2．5L／m2的剂量既可有效固沙,同时还可减缓水分蒸发,对植物的发芽、生长及生物量积累均起到了良好的作用;一年生和多年生固沙植物的合理选配,可有效地提高生物固沙效果。生物质固沙材料的应用实现了化学固沙和生物固沙的有机结合,为干旱、半干旱地区的生态环境建设提供了一项新的技术措施。更多还原

【Abstract】 A new biomass sand stabilization material (BSSM) synthesized from straw pulping effluent has been used in an experiment of sand stabilization and vegetation restoration in a desert area in Ningxia. The results show that: sand stabilization layers were formed within 24 hours after spraying BSSM on the wandering dune surface with a desirable wind proofing and sand stabilizing function and the growth of sand plant can be accelerated; an effective sand stabilization function and water evaporation slowing effect were achieved by spraying the solution of 1%～2% BSSM in a scale of 2.5 L/m2 on sand surface with a desirable function favoring seed germination, plant growth, and accumulation of biomass; the rational combination of annual and perennial sand stabilizing plants could effectively improve biologic sand stabilization effect. The application of BSSM could organically combine the sand stabilization of both chemical and biological methods, which provides a new technical measure on the ecological environment construction in the arid and semiarid areas.更多还原