Optimization of slope protection substrate and anti erosion performance in the phyllite area of Southern Shaanxi
In order to further explore the suitable slope ecological protection substrate for the Southern Shaanxi phyllite area,the aban-doned phyllite gravel in Southern Shaanxi was used as the main substrate,and straw,cement,organic fertilizer,peat soil,and water retaining agent were added to form the slope protection substrate.An orthogonal experiment was designed and the local herbaceous plant tall fescue from Southern Shaanxi was selected as the experimental grass species for potted planting.Using comprehensive scoring method and range analysis method to analyze the optimal ratio of slope protection substrate and the importance of various factors on the growth of tall fescue,and finally indoor simulated rainfall erosion test was used to verify the strength of the substrate.The results showed that in the Southern Shaanxi region,the optimal substrate ratio suitable for the growth of tall fescue was 4%straw content,4%cement content,5%organic fertilizer content,8%peat soil content,and 0.25%water retaining agent content.According to the analy-sis of range results,it could be concluded that the factors affecting the growth of tall fescue were cement,straw,peat soil,water re-taining agent,and organic fertilizer in descending order.The indoor simulated rainfall erosion test showed that the slope protection sub-strate in this study had good erosion resistance and strong practicality.
万方数据
维普
