笃斯越橘果实、叶片矿质元素和土壤肥力因子与果实品质的多元分析

doi:10.3864/j.issn.0578-1752.2018.01.016

Abstract

Abstract: 【Objective】In order to improve fruit quality through the soil and fertilizer management technology, this study explored the relationship between fruit and leaf nutrients, soil fertility and fruit quality (total phenols, flavonoids, anthocyanin, glucose, fructose, soluble sugar) of V. uliginosumin the Greater Xing'an Mountains, screened the main soil fertility factors affecting the accumulation of flavonoids and saccharides in the fruit of V. uliginosum by influencing the content of mineral elements in the leaf. 【Method】The V. uliginosum which grew in three site types were used as material. The three site types included Meadow bog with soil layer type, meadow bog Carex soil layer type and mountain slope type. The canonical regression analysis was used to study the correlation between soil fertility, leaf and fruit mineral element and fruit quality. Multivariate linear regression analysis was used to establish the regression equation, and to filtrate the main soil fertility factors which affected leaf mineral element in V. uliginosum. 【Result】The total contents of monosaccharide glucose and fructose in the fruits grew in Meadow bog with soil layer type and mountain slope type accounted for 84.20% and 95.11% of soluble sugar, respectively. Glucose and fructose were mainly accumulated at fruit maturity in terms of soluble sugar. The phenomenon only occurred in Meadow bog with soil layer type and mountain slope type, the total content of monosaccharide glucose and fructose in the fruits grew in meadow bog Carex soil layer type was measured only 56.95% of soluble sugar. The contents of total phenol and anthocyanin showed significantly differences in three different site types (P＜0.05). The canonical regression analysis indicated that the content of total phenol showed high significant positive correlation with the contents of Ca, Mg, Fe, Mn in fruit, and significant negative correlation with P element. Fruit K and Zn contents significantly influenced fruit quality characteristics, and K content had high significant positive correlation with flavonoid and significant positive correlation with anthocyanin and soluble sugar, the content of Zn was highly negatively correlated with flavonoids, anthocyanin, glucose and fructose in fruit. The contents of Ca and Fe in leaves had significantly positive and negative correlation with flavonoids, anthocyanin, glucose and fructose, respectively, but Ca in leaf had high significant correlation with Zn. Soil fertility had weak relation to the indexes of fruit quality. The contents of N, P, K in leaf were significantly positively correlated with N, P, K in fruit. P in leaf had high significant correlation with K in fruit, Zn in leaf was negatively correlated with Ca and Fe in fruit. Only Mg and Cu in fruit were significantly correlated with soil nutrients, and the soil nutrients mainly affected the leaf mineral content. Besides, the relationship between mineral elements in leaf and soil fertility was complex. Multivariate linear regression analysis indicated that soil pH had the greatest effect on mineral element in leaf, followed by soil organic matter. The content of N, P, K, Mn in leaf increased as the increase of soil organic matter, but the content of Zn decreased. 【Conclusion】The key technical strategies for soil management of V. uliginosum are to improve soil organic matter and ammonium N content, and enhance acidity in soil. Improving the content of K, Ca, Mg, Fe, Mn contents and reducing the content of Zn element in fruit are important measures to improve the fruit quality of V. uliginosum.

Key words: Vaccinium uliginosum L., fruit, leaf, soil, mineral nutrition, fruit quality, Vaccinium uliginosum L., fruit, leaf, soil, mineral nutrition, fruit quality

BAI YongChao, WEI XuFang, CHEN Lu, WAN RuMeng, HOU ZhiXia. Multivariate Analysis of Fruit Leaf Mineral Elements, Soil Fertility Factors and Fruit Quality of Vaccinium uliginosum L.[J].Scientia Agricultura Sinica, 2018, 51(1): 170-181.

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