Effects Of Different Fertilizers And Concentrations On The Growth Of Slope Restoration Plants

With the rapid development of social economy and the increasingly frequent interference of human activities on the ecological environment,the ecological problems caused by the slope damage have increased year by year.In recent years,research on slope issues has attracted extensive attention from many scholars and has become an important entry point for discussing ecological restoration.At present,the ecological sustainable development of slopes has been widely concerned by scholars at home and abroad,but the research focuses on the initial restoration of engineering methods,and the research on the types and concentrations of fertilizers in the slope matrix is less involved.In the case of poor slope site conditions,the composition and use of matrix and fertilizer are more important for the growth of slope plants,and the scientific matrix ratio is related to the success or failure of the entire slope protection project.In view of this,this paper studies the types and concentrations of fertilizers in the slope matrix and applies them to actual projects.This article selects Niuwangmiao Scenic Tourism Area in the city of Huixian,Henan Province as the research area and relies on its mountain restoration project to carry out slope experiments.The best fertilizer types and concentrations are determined through hydroponic nutrient solution and substrate ratio experiments.In hydroponic experiments,Robinia pseudoacacia,a typical restoration plant on the slope,was selected as the target plant.The differences in the growth of Robinia pseudoacacia under 4 kinds of fertilizers and 6 different concentrations were compared,and the conductivity,pH,germination rate of total salt content,and plant height were selected.The index analyzes the physical and chemical properties of different types and concentrations of nutrient solutions.In the matrix matching experiment,the pre-slope restoration plant Cosmos and the typical restoration plant Robinia pseudoacacia were selected as the target plants,and the culture substrate was composed of guest soil,agricultural and forestry waste,and fertilizer.By changing the types and concentrations of fertilizers,the differences in growth status of the target plants under different substrates were compared,and the experimental engineering slopes were observed for 6 months.The results showed that:（1）the main order of the effects of the six concentrations on the germination rate of plants was:1.66g/L>0.83g/L>2.49g/L>3.32g/L>4.13g/L>4.98g/L（2）The main effects of 4 fertilizers on plant height in 15 days are:granular heavy superphosphate（total phosphorus（P₂O₅）≥46.0%）>biological organic fertilizer>compound fertilizer（N-P₂O₅-K₂O≥45%）>large Element water-soluble fertilizer.（3）The germination number and plant height of the plants in the medium of 1.66g/L granular heavy superphosphate（total phosphorus（P₂O₅）≥46.0%）are the most ideal;The experimental results show that 1.66g/L granular heavy superphosphate can significantly increase the germination rate and plant height of Robinia pseudoacacia,and it is the preferred fertilizer to be added to the slope ecological restoration matrix.Has a good application effect.