Geochemical characters affecting growth and quality of sugar orange produced in Sihui

The authors carried out an eco-geochemistry investigation in three sugar orange plantation fields of Weizheng,Didou and Jianggu in Guangdong Province,collected the surface soils,some leaves,fruits of sugar orange of the garden and measured for beneficial,harmful and nutritional elements.According to the calculated absorption coefficients,and correlations between nutritional quality of sugar orange and elements of soil-in-root,the authors found the characteristic elements affecting growth and fruit quality of sugar orange,which included eleven elements such as SiO2,Fe2O3,MgO,K2O,CaO,OrgC,Na2O and trace elements S,B,V and Co.Finally,the authors analyzed the distribution of characteristic elements in the evaluated area,and realized that Devonian layers were relatively suitable to plant sugar orange.