脐橙品质与自然土壤中稀土元素相关性分析

Correlation Analysis Between Navel Orange Quality and REE in Natural Soil

在赣南稀土高背景区和稀土低背景区不同地质环境脐橙果园分别取岩石、土壤、脐橙植物样24组,用ICP-MS法测定其中15种稀土元素的含量;检测脐橙果实有机营养物质总糖、总酸、粗纤维、维生素C、类胡萝卜素、氨基酸等含量,并对稀土元素在土壤和脐橙植物体内的含量与脐橙有机营养物质含量的相关性进行了研究。结果表明,稀土高背景区脐橙稀土含量非常低,而各项有机营养物质指标均略高于稀土低背景区脐橙,表明稀土元素有益于脐橙有机营养物质的形成和提高;通过相关性分析和通径分析,表明稀土中与脐橙有机营养物质相关程度最高的是轻稀土元素Pr、La、Nd、Ce。

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.