固沙植被多功能高分子复合材料对沙土物理性状的影响  

Influence of Sand-fixation Vegetation Multifunctional Macromolecule Composites at Physical Characters of Sand

作　　者：王勇 王康[3] 小岛纪德[1] 

机构地区：[1]成溪大学理工学部,日本东京180-8633 [2]武汉理工大学材料科学与工程学院,湖北武汉430070 [3]武汉大学水资源与水电工程科学国家重点实验室,湖北武汉430072

出　　处：《水土保持学报》2009年第1期141-144,共4页Journal of Soil and Water Conservation

基　　金：国家留学基金项目资助(22842188)

摘　　要：采用饱和透水系数法和加压板法研究了固沙植被多功能高分子复合材料混入沙土后沙土的透水系数与保水能力的变化,用扫描电子显微镜及万能光学显微镜表征了改良土壤的微观及细观形态。结果表明:将0.5%的固沙植被多功能高分子复合材料混入沙土后,其沙土物理性状发生明显变化,有利于形成人工团粒结构,大大提高了沙土的含水量及植物用有效水的含量。对固沙植被多功能高分子复合材料改良沙土的机理进行了探讨,为固沙植被多功能高分子复合材料应用于沙土种植提供了新的依据。Researching on the improvement to the sand made by the sand-fixation vegetation multifunctional macromoleeule composites. In this research, saturation infiltration and force panels are introduced to prohe the transformation of the sand soils＇ infiltration coefficient and moisture maintenance performance. Also, electron scanning microscope and all-purpose optical microscope are employed to show soils microcosmic and minute configuration. Experiments shows that composites are able to reduce soil cavity ratio, help form artificial agglomerate structures, enlarge the sand soil＇s capacity for keeping moisture and reduce the saturation infiltration coefficient, and improve the soil moisture maintenance capacity. The result indicates that moisture maintenance capacity transformed notablely after 0. 5% composites was interfused into sand soil, and greatly increased sand soil moisture capacity and effective plant water usage ratio. The probe into the mechanism of composites＇ improvement to sand soil has approved the applicability of composites.

关 键 词：多功能复合材料 固沙植被 沙土物理性状 透水系数 含水量 

分 类 号：S156.2[农业科学—土壤学]