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[Objective] The present paper aimed to understand chemical properties and available microelement characteristics of soil for growth of wild Bletilla striaes, explicit suitable soil environment of Bletilla.striaes cultivation and provide a reference for soil environment selection of Bletilla.striaes artificial cultivation. [Method] The microelement effective state and chemical properties of soil for growth of wild Bletilla.striata were investigated by field survey and the sufficient and lack level was analyzed by indoor analysis to discuss restriction factors affecting soil available microelement content. [Result] The pH and content of organic matter, total nitrogen, total phosphorus, total potassium, available nitrogen, available phosphorus, rapid available potassium, available Cu, available Zn, available Fe and available Mn in soil of Bletilla.striata cultivation are 7.65-7.99, 26.86-280.58 g/kg, 1.55-14.44 g/kg, 0.47-0.99 g/kg, 1.89-19.52 g/kg, 99-641 mg/kg, 2.40-18.75 mg/kg, 70-122 mg/kg, 0.45-1.70 mg/kg, 0.83-14.66 mg/kg, 11.80-119.85 mg/kg and 24.88-52.55 mg/kg respectively. [Conclusion] The suitable soil environment for Bletilla.striats growth is alkalescence and needs higher content of organic matter, total nitrogen, total phosphorus, available nitrogen, available phosphorus and rapid available potassium. The soil organic matter, N, P and K content has no obvious effect on Cu and Mn content in soil. The content of organic matter, total nitrogen, available nitrogen and available phosphorus in soil is positively related to Zn and Fe content very significantly.Selecting the soil with higher content of organic matter, total nitrogen, available nitrogen and available phosphorus can improve available Zn and Fe content in soil during Bletilla.striata artificial cultivation process, which is beneficial to growth and quality of Bletilla striata. [ABSTRACT FROM AUTHOR]

[Objective]The aim of this paper was to explore the distribution characteristics of soil nutrients in different recovery modes of rocky desertification control, and to provide scientific basis for further optimizing the vegetation allocation of rocky desertification control. [Method] Taking soil from five sampling sites as the study object, including Zanthoxylum bungeanum, Lonicera japonica, mixed forests, cardamom and abandoned farmland in Huajiang Rocky Desertification Control Demonstration Area in Guizhou. Soil layers of 0 - 10, 10 -20 and 20 -30 cm were sampled and monitored for 3 years before, during and after rainy season, and the distribution characteristics of soil nutrients under different recovery modes were analyzed. [Result] With the restoration of vegetation, compared with abandoned farmland, average values of soil bulk density, soil retention ability and capillary porosity in the four plots decreased respectively by 0.61 %, 7.97 % and 1.12 % , soil organic carbon, total nitrogen, total phosphorus and total potassium increased by 53.45 %, 45.72 %, 80.81 % and 1.44 % respectively, hydrolyzed nitrogen and available phosphorus increased by 53.36 % and 25.80 % , respectively. In the same plot, the contents of soil organic matter and soil nutrient contents were all shown as during rainy season > after rainy season > before rainy season. With the increase of depth of the soil layer, content of soil nutrients of different recovery models decreased, nutrients mainly concentrated in the surface layer. [Conclusion] There were differences in nutrient contents between different restoration models, and vegetation restoration in karst rocky desertification area had an ameliorative effect on ecological environment. [ABSTRACT FROM AUTHOR]