高羊茅根土复合体阻抗红壤、高岭土、河沙水力分离的机制试验
Experimental Study on Mechanism of Resistance of Tall Fescue Root-soil Complex to Hydraulic Separation of Red Soil,Kaolin and River Sand
[目的]为揭示根土物质之间复杂关系即植物根系一方面提高土壤颗粒粘聚力同时又阻抗或延缓土壤颗粒因水力侵蚀发生分离的双重作用机制;[方法]选择山水林田湖草系统和水土保持生产实际应用广泛的代表性植物高羊茅(Festuca arundinacea)为实验材料,分别播种于以红壤、高岭土和河沙为生长基质的剪切环刀盒内,对其形成根土复合体进行研究包括颗粒组成、根系结构扫描、有机质碳测定,复合体的水力冲刷实验,复合体的抗剪强度实验等。[结果]结果表明: (1)根…查看全部>>
[Objective]In order to reveal the complex relationship between root and soil substances,i.e.The dual action mechanism of plant root system on the one hand improving the cohesion of soil particles while impeding or delaying the separation of soil particles due to hydraulic erosion;[Method]Festuca arundinacea,a representative plant widely used in water and soil conservation,was selected as the experimental material,The root-soil complex was formed by sowing in…查看全部>>
程洪;江辉;张路;赵建民;詹新武;
root system of tall fescue Cohesion Impact resistance Soil separation Hydraulic erosion.
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