天峨县油茶抚育改造林的土壤与叶片养分特征OA

To provide a reference for scientific fertilization and nutrient management of low-yield Camellia oleifera forests,this study selected 35 C.oleifera tended and transformed forest stands in Tian'e County as the research objects,measured the nutrient status in soil and nutrient element content in leaves,and analyzed the correlation between them.The results showed that the coefficient of variation in soil nutrient content from large to small was AP>Cu>AK>Mg>Zn>OM>AN>TB,and the coefficient of variation in nutrient element content in leaves from large to small was Zn>TB>P>K>Ca>Mg>N.The soil of 35 low-yield C.oleifera forest plots in Tian'e County showed the significant characteristics of excessive N,TB,and Zn,severe deficiency of P and K,abundant OM,but uneven distribution of secondary and micronutrients.The leaves showed excessive N and Mg,but general deficiencies of P,K,Ca,Zn,and TB.The correlation analysis results showed that the leaf Ca content was extremely significantly negatively correlated with the soil OM content and soil AN content,the leaf P content was extremely significantly positively correlated with the soil Zn content and soil Cu content,and the leaf Mg content was significantly posi-tively correlated with the soil AP content and soil Mg content.This study provides a reference for improving the quality and efficiency of low-yielding C.oleifera forests and for precise nutrient management.