Multivariate Analysis and Optimization Scheme of the Relationship between Leaf Nutrients and Fruit Quality in 'Bingtang' Sweet Orange Orchards
文献类型： 外文期刊
作者： Cao, Sheng 1 ; Zeng, Bin 1 ; Zhou, Xuan 3 ; Deng, Sufeng 1 ; Zhang, Wen 1 ; Luo, Sainan 1 ; Ouyang, Mengyun 4 ; Yang, Shuizhi 1 ;
作者机构： 1.Hunan Acad Agr Sci, Hunan Hort Res Inst, Changsha 410125, Peoples R China
2.Pomol Variety Innovat Ctr, Yuelushan Lab, Changsha 410128, Peoples R China
3.Hunan Acad Agr Sci, Hunan Soil & Fertilizer Inst, Changsha 410125, Peoples R China
4.Hunan Acad Agr Sci, Hunan Nucl Agr Sci & Space Breeding Inst, Changsha 410125, Peoples R China
关键词： sweet orange; leaf mineral elements; fruit quality attributes; nutrient diagnosis; optimum nutrient concentrations
期刊名称：HORTICULTURAE （ 影响因子：3.0； 五年影响因子：3.2 ）
ISSN：
年卷期： 2024 年 10 卷 9 期
页码：
收录情况： SCI
摘要： Citrus trees require a balanced and adequate supply of macronutrient and micronutrient elements for high yield and fruit quality. Foliar nutrient analysis has been widely used in fruit-tree nutrient diagnosis and fertilization calculation. However, there is no information on ways to produce optimal fruit quality in sweet oranges. In the present study, fruit and leaf samples were collected from 120 'Bingtang' sweet orange [Citrus sinensis (L.) Osbeck] orchards during four consecutive years (2019-2022). Parameters of leaf nutrition and fruit quality were analyzed based on these samples. Diagnostic results based on leaf classification standards indicated that the most deficient elements were Ca, Mg, and B, followed by N and Zn. Fruit quality, determined by single fruit weight (SFW), fruit shape index (FSI), total soluble solids (TSS), titratable acidity (TA), vitamin C (Vc), and maturation index (MI = TSS/TA) during fruit maturation, exhibited inconsistent responses to leaf mineral nutrition concentrations. The leaf-nutrient optimum values for high quality of the 'Bingtang' sweet orange fruit were ranges of 2.41-4.92% N, 0.10-0.28% P, 1.30-2.11% K, 2.99% Ca, 0.26-0.41% Mg, 340-640 mg/kg S, 89.65-127.46 mg/kg Fe, 13.48-51.93 mg/kg Mn, 2.60-13.84 mg/kg Cu, 15.59-51.48 mg/kg Zn, and 53.95 mg/kg for B. These results suggest the leaf-nutrient optimum values for diagnosis can be used not only to identify the nutrient constraints but also to provide guidance for the establishment of fertilization regimes in citrus cultivation.
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