| This paper,the growth status of different plants and plant combinations and the landscape effect that can be formed are discussed,and the plant combinations and matching mode that are suitable for bare rock slope greening are selected.The main contents and achievements are as follows:(1)After seed pretreatment test,seed viability test,culture dish test and seed unicast control test,the plant seeds were screened,and several plants with good effect and normal seedling growth were selected,finally the plants were selected as follows: Hurb plants :Lolium perenne,Festuca elata and Crotalaria pallida;Shrub plants: Amorpha fruticosa,Lespedeza bicolor;Arbor: Robinia pseudoacacia.(2)In the indoor pot experiment design,a mixed seeding experiment and two repeated experiments were carried out in the new green substrate:In the experiment of combination 1,the optimal ratio of Festuca elata,Lespedeza bicolor and Amorpha fruticosa was: Festuca elata,Lespedeza bicolor and Amorpha fruticosa = 3:1:1,grass irrigation ratio was 3:2;In the experiment of combination 2,the results showed that the best ratio of Lolium perenne,Festuca elata,Crotalaria pallida,Robinia pseudoacacia and Amorpha fruticosa was 5:5:4:8:8.(3)In the experiment of planting concrete mixed seeding,the concrete samples made according to a certain proportion were conserved by reducing alkali,and then the new greening base materials were poured and planted with soil.Finally,the best ratio of two different combinations was selected:In the experiment of plant concrete mixed seeding of combination one,the optimal proportion of Festuca elata,Lespedeza bicolor and Amorpha fruticosa was as follows:plant proportion 4:3:3,grass irrigation proportion 2:3;In the experiment of planting concrete,the best proportion of combination 2 " Lolium perenne,Festuca elata,Crotalaria pallida,Robinia pseudoacacia and Amorpha fruticosa" was 5:5:2:4:4.The test results can provide a feasible greening scheme for bare rock slope greening. |
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