Soil Fertility in Different Sand-mulching Years and Nutritional Quality of Selenium Sand Melon(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Soil Fertility in Different Sand-mulching Years and Nutritional Quality of Selenium Sand Melon

Author(s):: KAI Jianrong; WANG Xiaojing; (Ningxia Research Institute of Quality Standards and Testing Technology of Agricultural Products，Yinchuan，Ningxia 750002)

Keywords:: age of grave-covered field; soil fertility; selenium sand melon; nutritional quality

Abstract:: In order to ascertain the variation trend of soil fertility with the increasing year of sand-mulching and establish the quality indicator system of the selenium sand melon，gravel-sand mulched land of different ages (3，10, 20 years) in Sanhe village and Tuozhai village，Xingren county and Sanyanjing village，Xiangshan county，Ningxia were taken as the research object.For each kind of soil，9 kinds of soil nutrients were analyzed and principal component analysis on 7 quantitative characteristics of the selenium sand melon were conducted.The results indicated that soil fertility decreased significantly with the increasing age of the gravel mulched field.Therefore，in order to ensure sustainable use of gravel-sand mulched fields，people must fertilize and cultivate scientifically and rationally in the process of farming.For selenium sand melon，the nutritional quality largely depends on the contents of soluble solids，total sugar，total acid，vitamin C，nitrate and lycopene，some of which were correlated with each other.The coefficients of variation of these seven quantitative indexes were ranged from 6.01% to 47.16%.A significant positive correlation was found between the contents of total acid and lycopene，as well as nitrate and the edge soluble solids of selenium sand melon.The soluble solids and lycopene had the greatest impact on the nutritional quality of selenium sand melon.

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Last Update: 2017-03-22