Abstract:

The purpose of this study is to clarify the growth status of wild Corylus chinensis Franch in Guizhou karst plateau, analyze the nutrient relationship among fruits, soil and leaves, and provide a theoretical basis for the resource development and cultivation of wild Corylus chinensis Franch. The soil, leaves and fruits of wild Corylus chinensis Franch in Panzhou City were used as materials to determine the content of mineral elements. Simple correlation analysis was adopted to analyze the correlation among those mineral elements and the path analysis was used to study the effects of mineral elements on the fruit indexes. The results show that the soil of wild hazel contains relatively high contents of major elements. The contents of trace elements in soil are relatively low except available zinc. The crude fat and protein content of fruits are 39.88% and 18.52% respectively, and the unsaturated fatty acid content is 87.62%. The correlation analysis and path analysis show that Mn has a major effect on the fruit quality, so Mn is an important element for Corylus chinensis Franch fruit. N in fruits, Mg in soil, and Mg and P in leaves have great effect on the fruit quality. Corylus chinensis Franch has the potential for further development because of its high contents of protein, crude fat and unsaturated fatty acid. In its cultivation, diagnosing and analyzing the mineral elements in leaves and soil and regulating the Mn content in plants can improve the fruit quality. The appropriate adjustment of N, Mg and P content in soil is also important to improve the fruit quality.

Key words: Guizhou karst plateau, wild Corylus chinensis Franch, soil, leaf, fruit, mineral elements