广西富川纽荷尔脐橙园土壤和叶片营养状况研究与评价

Analysis and Evaluation on Nutritional Status in Soils and Leaves of Newhall Orange in Fuchuan of Guangxi

对广西富川县60个纽荷尔脐橙园土壤和叶片样品进行营养成分检测分析。结果表明,土壤全部偏酸,有效硼普遍不足,有效锰不足的现象也较多,土壤有机质、碱解氮、有效磷、交换性镁和有效铜含量中等,有效铁含量较丰富,有效钾、有效锌、交换性钙含量高;叶片中磷、钾、铁、锰、镁含量基本处于适量至高量水平,氮也较丰富,钙不足现象明显,铜缺乏现象严重,全都缺锌;土壤pH值与交换性镁呈极显著正相关,与有效钾呈极显著负相关;土壤有机质与有效锌呈极显著正相关;土壤交换性钙与叶片钙含量呈显著正相关,土壤交换性镁与叶片镁含量呈显著正相关,土壤交换性钙、交换性镁与叶片锰含量呈极显著负相关。

The nutrients in soil and leaf samples from 60 Newhall orange orchards in Fuchuan of Guangxi were detected and analyzed.The results showed that all the soil samples were acidic.The available B and Mn were generally deficient in these soils.The content of available K,available Zn,exchangeable Ca was high;the content of soil organic matter,available nitrogen,available P,exchangeable Mg and available Cu were medium.The content of P、K、Fe 、Mn、Mg in most of the leaf samples were from optimum to high,while that of Cu、Zn was deficient.Soil pH values were significantly positively correlated with the content of exchangeable Mg but negatively corrected with available K.The content of soil organic matter and that of available Zn were in a significantly positive correlation.The content of soil exchangeable Ca and leaf total Ca also showed a significantly positive correlation,and so did the content of soil exchangeable Mg and leaf total Mg.The content of both soil exchangeable Ca and Mg showed a significantly negative correlation with the content of leaf total Mn.