Persimmon is a traditional fruit tree species in Jizhou District of Tianjin. The variety of persimmon planted in the surrounding area of Panshan in Jizhou District is Mopan persimmon. Mopan persimmon is named for its origin in Panshan, a scenic tourist resort. In this paper, the quality indexes of persimmon and the geochemical characteristics of soil in Panshan were studied. According to the results obtained, the average ash content of Panshan Mopan persimmon is 0.38 g/100 g, the average fat is 0.20 g/100 g, the average crude fiber content is 0.67%, the average content of beta-carotene is 77.27 μg/100 g, the average moisture content is 77.92 g/100 g, vitamin C is 25.80 mg/100 g on average, the average total soluble sugar is 14.81%, and the average protein content is 0.63 g/100 g. K, N, P and S, Ca , Mg, which belong to large and medium nutrient elements in soil, are the most abundant elements in the fruit of Mopan persimmon; Mopan persimmon is mainly distributed in and around Panshan granite rock mass; the values of MgO, K2O, Mo and F in the surface soil of the production area are significantly higher than the background values of Tianjin soil; the average content of SiO2 in root soil from top to bottom is higher, and sandiness of soil is beneficial to persimmon tree growth; the average content of K is higher, while the average content of N, P and Corg in root soil is deficient or deficient; soil acidity and alkalinity environment of surface soil and root soil in Mopan persimmon producing area is more suitable for persimmon tree growth. The correlation between root soil elements and fruit quality shows that the superiority of SiO2, Mo, P and K2O content in soil of production area provides favorable conditions for the improvement of nutrient quality of fruits, such as beta-carotene, VC, and protein, which is conducive to the formation of high quality fruits.
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