Correlation Analysis Between Navel Orange Quality and REE in Natural Soil
脐橙品质与自然土壤中稀土元素相关性分析

24 groups of samples of rocks, soils and plants were collected in the orchards?of navel oranges grown in different geological circumstances with high and low REE-background areas in South Jiangxi Province. The contents of 15 kinds of rare earth elements in the rocks, soils, and navel orange plants were determined with the method of ICP-MS. The organic nutrients including the total sugar, total acid, crude fiber, Vitamin C, carotenoid and amino acid etc of the navel orange fruits were measured. The correlations between REE contents in soils, navel orange plants and the contents of organic nutrients of navel oranges were studied. The results showed that the contents of REE of navel oranges in high REE-background areas were very low, but the contents of organic nutrients were a bit higher than low REE-background areas, which indicated that REE are beneficial to form and increase organic nutrients of navel orange. The correlation analysis and path analysis showed that Pr, La, Nd, Ce of light-REE correlated maximally with organic nutrients of navel orange.