影响四会沙糖桔生长及果实品质的地球化学特征

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

四会地区是中国重要的沙糖桔产区,重点对威整、地豆和江谷三处沙糖桔园进行了生态地球化学调查,采集了沙糖桔园表层土壤以及沙糖桔叶、果实以及配套根系土样品,实测了营养、有益和有害元素。通过计算沙糖桔各部位元素吸收系数、果实品质与根系土营养元素的相关性,获知影响沙糖桔生长及果实品质的特征元素,它包括常量组分SiO2、Fe2O3、MgO、K2O、CaO、OrgC、Na2O和微量元素S、B、V、Co。最后通过分析特征元素在评价区分布状况,获知种植沙糖桔理想区域为泥盆纪地层分布区。

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.