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目的:通过对宽叶缬草种植区的土壤肥力进行分析评价,为宽叶缬草的科学合理种植提供理论依据,并为进一步完善宽叶缬草的土壤肥力评价体系奠定基础。方法:对贵州宽叶缬草种植区的22个样品土壤的p H及有机质、全N、全P、速效P、全K、速效K含量等7个因子进行测定,并采用改进的内梅罗综合指数法对土壤肥力进行综合评价。结果:贵州宽叶缬草种植区土壤中可利用的有机质、全N、全P、全K和速效K均属中上水平,速效P水平偏低。结论:贵州宽叶缬草种植区的土壤肥力属于中等偏上水平。本研究采用的综合评价方法,可完善土壤肥力综合评价的定量水平,减少评价过程中主观因素的影响。
OBJECTIVE: To provide a theoretical basis for scientific and reasonable planting of Valeriana officinalis by analyzing and evaluating the soil fertility of Valeriana officinalis plantation, and to lay the foundation for further improvement of the evaluation system of Valeriana officinalis soil fertility. Methods: Soil samples of 22 samples from wide-leaved Valeriana officinalis plantations in Guizhou Province were assayed for p H, total N, total P, available P, total K and available K, and the improved Nemerow Comprehensive index method for comprehensive evaluation of soil fertility. Results: Available organic matter, total N, total P, total K and available K in the soil of Guizhou Valeriana officinalis plantation all belonged to the upper middle level and the available P level was lower. CONCLUSION: Soil fertility in the broad-leaved Valeriana officinalis plantation in Guizhou Province belongs to the middle-upper level. The comprehensive evaluation method adopted in this study can improve the quantitative level of comprehensive evaluation of soil fertility and reduce the impact of subjective factors in the evaluation process.