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Effects of Seaweed-Extract-Based Organic Fertilizers on the Levels of Mineral Elements, Sugar-Acid Components and Hormones in Fuji Apples

文献类型： 外文期刊

作者： Yang, Song 1 ; Wang, Hairong 1 ; Wang, Guiping 1 ; Wang, Jinzheng 1 ; Gu, Aiguo 2 ; Xue, Xiaomin 1 ; Chen, Ru 1 ;

作者机构： 1.Shandong Inst Pomol, Tai An 271000, Peoples R China

2.Jiangsu Prod Qual Testing & Inspection Inst, Nanjing 210007, Peoples R China

关键词： seaweed extract; organic fertilizer; mineral elements; sugar-acid components; hormones

期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）

ISSN：

年卷期： 2023 年 13 卷 4 期

页码：

收录情况： SCI

摘要： Seaweed extracts, which are naturally degradable and environmentally friendly, have become important components of organic fertilizers for fruit. In this study, the effects of seaweed-extract-based organic fertilizers on the levels of mineral elements, sugar-acid components, and hormones in 'Fuji' apples were evaluated. Eleven-year-old 'Fuji' apple ('Yanfu 3'/M9/Malus robusta) trees were sprayed with seaweed-extract-based fertilizers SE1 (contained >= 20 g/L of algal polysaccharides, >= 100 g/L of amino acids, and >= 30 g/L of EDTA-Ca) and SE2 (contained >= 100 g/L of algal polysaccharides, >= 160 g/L of Ca, and >= 10 g/L of Mg) from early May to early October at two-week intervals in 2020. Water spraying was used as a control treatment. The preliminary results showed that SE1 and SE2 significantly increased the net photosynthetic rate, chlorophyll content and Rubisco enzyme activity in 'Fuji' apple leaves. SE1 and SE2 improved the quality of 'Fuji' apples. Compared to the single-fruit weight, soluble solid content (SSC), soluble sugar content, sugar-acid ratio, vitamin C (VC) content, and free amino acid content of control apples, those of SE1-treated and SE2-treated apples increased by 10.74% and 8.94%, 12.16% and 9.76%, 21.96% and 11.90%, 45.12% and 28.55%, 56.12% and 47.96%, and 17.15% and 13.42%, respectively. SE1 and SE2 significantly improved the levels of fructose, glucose, sucrose, and sorbitol, but decreased the levels of malic acid, oxalic acid, and tartaric acid in 'Fuji' apples. Meanwhile, SE1 and SE2 increased the levels of potassium, calcium, magnesium, iron, zinc, and boron in 'Fuji' apples. SE1 and SE2 significantly improved the levels of indole-3-acetic acid, zeatin riboside, and gibberellic acid, but significantly decreased the level of abscisic acid in 'Fuji' apples. In conclusion, spraying seaweed-extract-based foliar fertilizer is beneficial to the nutrient accumulation and flavor development in 'Fuji' apples.

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