植被混凝土不同磷石膏掺量对狗牙根根系特性及抗拔力学性能的影响  

Effects of Different phosphogypsum Content on Root Characteristics and Pull-out Mechanical Properties of Bermudagrass in Vegetation Concrete

作　　者：杨嘉槊 吴彬[2,3] 康柔嘉 许亚坤 许文年 YANG Jiashuo;WU Bin;KANG Roujia;XU Yakun;XU Wennian(College of Civil Engineering and Architecture,China Three Gorges University,Yichang 443002,China;Hubei Engineering Research Center of Cement Based Ecological Restoration Technology,China Three Gorges University,Yichang 443002,China;College of Hydraulic and Environment Engineering,China Three Gorges University,Yichang 443002,China;College of Biological and Pharmaceutical Sciences,China Three Gorges University,Yichang 443002,China)

机构地区：[1]三峡大学土木与建筑学院,湖北宜昌443002 [2]水泥基生态修复技术湖北省工程研究中心(三峡大学),湖北宜昌443002 [3]三峡大学水利与环境学院,湖北宜昌443002 [4]三峡大学生物与制药学院,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2025年第1期65-72,共8页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金项目(51979147)。

摘　　要：为研究植被混凝土磷石膏含量对基材理化性质、植物根系性征及整株抗拔力的影响,进行了不同磷石膏掺量(0%、3%、4.5%、6%、9%)以及不同生长期(90、120、150d)条件下,基材相关理化指标的测定、狗牙根根系监测和原位整株拉拔试验.结果表明:磷石膏对基材容重、pH值和土壤磷含量具有显著影响;狗牙根根系网状结构显著增强了抗拔力,整株抗拔力随根系性状的改善而增大,3%掺量下抗拔力120d时高出0%掺量30.25%;适量磷石膏掺入显著促进了根系生长,3%掺量下根系总根长、根体积和根系生物量增加显著,此种情况下狗牙根根系固土效果最好.In order to study the effect of phosphogypsum content of vegetation concrete on the physicochemical properties of the substrate,plant root characteristics and the pull-out resistance of the whole plant,the determination of the physical and chemical indexes of the substrate,the root monitoring of bermudagrass and the in situ whole-plant pull-out test were carried out under different phosphogypsum content(0%,3%,4.5%,6%,9%)and different growth periods(90,120,150d).The results showed that phosphogypsum had a significant effect on bulk density,pH value and soil phosphorus content.The pullout resistance was significantly enhanced by root reticulation of the bermudagrass,increasing with the improvement of root traits.The pull-out resistance at 3%phosphogypsum mixing dosage was 30.25%higher than that at 0%dosage at 120d.Appropriate amount of phosphogypsum significantly promoted the growth of root.The total root length,root volume and root biomass of the root system increased significantly at the 3%dosage,thus the root system of bermudagrass had the best soil consolidation effect in this case.

关 键 词：植被混凝土 磷石膏 根系形态 抗拔力 

分 类 号：TU528[建筑科学—建筑技术科学] S157[农业科学—土壤学]