Abstract:

In order to evaluate the soil properties of karst rocky desertification (KRD) objectively in different area of Yunnan Province, so as to provide theoretical basis for revegetation of karst rocky desertification in different area of Yunnan Province. The author analyzed particle size, physical and chemical properties, and elements of 5 soil samples, which were collected from typical rocky desertification area in Kunming, Yiliang, Mile, Jianshui and Wenshan. The results showed that: the sand and power particle were dominated in 5 soil samples from typical rocky desertification area, bad retention water and weak drought resistance. The content of organic matter, N, P, K, available P, available K were low in soil of rocky desertification area, poor soil fertility. Rocky soil mineralization serious, the content of mineral elements, soluble and not soluble calcium magnesium was high in rocky soil samples, low degree of soil weathering, it was difficult to grow for plants on soil of rocky desertification area. There were differences of physical and chemical properties in Kunming, Yiliang, Mile, Jianshui and Wenshan of Yunnan, but the differences were not significant, similar recovery mode could be used in 5 soil samples from typical rocky desertification area of Yunnan.