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- W2386606607 abstract "The objective of this study was to find out the major soil nutrient ratio factors affecting fruit quail- ties, and to obtain the optimum proposal of soil nutrient ratio for good fruit qualities. It will provide basis data for growers in making rational application and increasing utilization ratio of fertilizer in Fuji apple tree. The investigation and analysis were carried out on soil nutrient and fruit qualities in apple orchards of Beijing region from 2008 to 2009. 18 kinds of proportion between soil mineral elements were calculated; methods of canonical correlation analysis and linear program were used to screen major soil nutrient ratio factors affect- ing fruit qualities and to solve the optimum proposal of soil nutrient ratio for good fruit qualities and plentiful yield in Fuji apple. The results showed that soil nutrient ratios vary among different apple orchards, where- in the maximum value of alkaline hydrolysable N/available P, alkaline hydrolysable N/available K, alkaline hydrolysable N/available Zn, available K/Zn and available Ca/Zn was worth 7.95, 7.60, 10.58, 18.76 and 13.47 times the minimum value respectively. Canonical correlation and regression analysis obtained that both alkaline hydrolysable N/available P and available P/Ca were positively correlated with fruit mass, while alka- line hydrolysable N/available Ca was negatively correlated with it; both alkaline hydrolysable N/available Ca and alkaline hydrolysable N/available K were negatively correlated with firmness; alkaline hydrolysable N/available Fe had the greatest effect on fruit soluble solids content, and was negatively correlated with it, while available K/Fe was positively correlated with it. The optimum proposals of soil nutrient element ratio for good apple quality were alkaline hydrolysable N/available P 1.9, alkaline hydrolysable N/available K 0.18, alkaline hydrolysable N/available Ca 0.02 - 0.115, alkaline hydrolysable N/available Fe 1.6, alkaline hydro- lysable N/available Zn 4.0 - 55, alkaline hydrolysable N/available B 80 - 420, available P/K 0.4, available P/Ca 0.028 - 0.22, available P/Fe 3 - 30, available P/Zn 9 - 80, available P/B 600, available K/Ca 280, avail- able K/Fe 5.6 - 33, available K/Zn 125, available K/B 125 - 980, available Ca/Fe 500, available Ca/Zn 120 and available Ca/B 1300 - 11,500. Under this optimum proposal for soil nutrient ratio, the target of fruit qualities of 442.06 g mass, 13.87 kg/cm 2 firmness, 29.37% soluble solids, 0.51% titratable acid will be achieved theoretically. Taken together, it is the key to improve fruit soluble solids content by reducing soil alkaline hydrolysable N, increasing available K and stable available Fe." @default.
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- W2386606607 date "2013-01-01" @default.
- W2386606607 modified "2023-09-26" @default.
- W2386606607 title "Research of Optimum Proposal of Soil Nutrient Ratio for Good Fruit Qualities and Plentiful Yield in Fuji Apple of Beijing Region *" @default.
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