引进葡萄柚营养状况与果实品质的相关性

为给果园进行科学、合理培肥提供参考依据,以葡萄柚的9个品种为试材,主要对葡萄柚试验园土壤矿质元素有效性、果实内矿质元素含量、果实内矿质元素间相关关系及果实内矿质元素含量对果实糖、酸、维生素C、可溶性固形物含量的影响等方面进行了研究。结果表明,本试验园葡萄柚各品种种植区的土壤养分含量较均匀,无明显差异;葡萄柚果实N、K、Ca、Mg、Mn元素的含量较低,均有不同程度的缺乏状态;Fe元素的含量适宜;P元素的含量偏高;对葡萄柚9个品种的果实品质进行了综合评价,结果表明,火焰、亨路比和哈路比品种品质表现较好,而帕利斯品种品质表现较差;葡萄柚果实中矿质元素含量与果实内含物的相关性表现在:总糖与N、P、K、Ca、Zn含量呈极显著正相关,酸含量与N含量呈极显著负相关,Vc含量与P、K、Ca、Zn含量呈极显著正相关,可溶性固形物含量与果实内Ca、Zn含量呈显著正相关。

Correlations between Nutrition Status and Fruit Quality of Introduced Citrus paradisi Macf.

In order to offer reference for scientific and rational fertilization,contents of mineral elements in fruits and soil,correlation of mineral elements in fruits were investigated,and effects of mineral elements on contents of sugars,acids,vitamin C and soluble solids were studied,taking 9 varieties in Citrus paradise Macf.as materials.The results showed that soil conditions between various plots were consistent and no remarkable difference;contents of N,K,Ca,Mg, Zn were all lower than optimum range and at different degree of deficient condition;K content was in optimum range,and P content was higher than optimum range;fruit qualities of Flame,Henderson Ruby,Hudson Foster were excellent in 9 varieties,and that of Perlist was worse than other.There were correlations between contents of mineral elements and inclusion in fruit at different degrees.Contents of N,P,K,Ca,Zn in fruit were extremely significant positive correlate with sugar content in fruit.N content in fruit was extremely significant negative correlate with acid content in fruit.Vitamin C content in fruit was extremely significant positive correlate with content of P,K,Ca,Zn in fruit.Soluble solids content in fruit was significant positive correlate with content of Ca and Zn in fruit.