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作 者 ：凌丽俐 彭良志 淳长品 江才伦 曹立

期 刊 ：植物营养与肥料学报 2012年 18卷 4期 页码：947-954

关键词：赣南；纽荷尔脐橙；营养元素；果实品质；

Keywords:southern Jiangxi province, Newhall navel orange, nutrient elements, fruit quality,

摘 要 ：为了探讨赣南产区纽荷尔脐橙果园叶片营养状况与果实品质的相互关系，测定了9个县（市、区）58个脐橙园叶片的矿质营养元素、果实可溶性固形物（TSS）、可滴定性酸（TA）含量和单果重（SFW）。结果表明，大部分果园叶片氮含量高于适宜范围，而所有果园叶片磷、钾含量均处于适宜范围或以上；分别有87.9%、55.2%、5.2%的果园叶片镁、钙、硫含量低于适宜范围；所有果园叶片的钼含量均处于适宜范围，铁含量处于适宜范围或以上，少量果园的叶片硼、锰含量低于适宜范围，接近1/3果园的叶片铜含量低于适宜范围，96.6%果园的叶片锌含量低于适宜范围；随着果园果实品质的提高，TSS与TA显著增加，SFW显著下降。相关性分析表明，果实TSS与叶片钾含量呈显著负相关，与镁、锌含量呈极显著正相关；SFW与叶片12个营养元素均无显著相关；TA与叶片氮含量呈显著正相关，与锰含量呈极显著正相关。因而，生产上需要重视补充镁、锌肥，适量补充钙、铜肥，合理控制氮、磷和钾肥的施用量。

Abstract:To explore the relationship between leaf nutrients and fruit quality of Newhall navel orange (Citrus sinensis Osbeck), 12 nutrient elements in leaves, the fruit total soluble solid (TSS) content, titratable acid (TA) content and single fruit weight (SFW) of Newhall navel orange (Citrus sinensis Osbeck) on trifoliate orange [Poncirus trifoliata (L.)] rootstocks were investigated in 58 orchards in southern Jiangxi province. The results show that the leaf N levels of most orchards exceed the optimum range, while the P and K levels of all orchards are within or above the optimum ranges. About 87.9%, 55.2% and 5.2% orchards are below the optimum Mg, Ca and S ranges, respectively. For microelements, the Mo levels are within the optimum range, and the Fe levels are within or above the optimum range for all orchards. Furthermore, there are several orchards in which both the B and Mn levels are below the optimum ranges, and one third of the orchards in which the leaf Cu levels are below the optimum range. The Zn levels of 96.6% orchards are below the optimum range. With the improvement of the fruit quality, TSS and TA are increased significantly, while SFW is decreased significantly. There is a significantly negative correlation between the fruit TSS and the leaf K level. However, the correlations between the fruit TSS and the leaf Mg and Zn levels are significantly positive, and there aren’t any significant correlations between the fruit SFW and the 12 leaf nutrient elements. For the fruit TA, it shows remarkably positive correlations with the leaf N and Mn levels. For the fertilizer practices of Newhall navel orange in south Jiangxi province, it should be focused on supplements of Mg and Zn, moderately supplements of Ca and Cu, and decreasing in N, P and K applications.

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