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| THE DISTRIBUTION OF SOIL ELEMENTS AS WELL ASITS INFLUENCE ON THE QUALITY OF DONGZAO (WINTER JUJUBE) IN ZHANHUA DONGZAO GROWING AREA |
| WANG Cun- long1, LIU Hua-feng1, XIA Xue-qi2, LIU Zhong-ye1, WANG Hong-jin1, ZHENG Wei-jun1 |
1. Shandong Institute of Geological Survey, Jinan 250013, China;
2. School of Earth Sciences and Resources, China University of Geosciences, Bei-jing 100083, China |
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Abstract Researches on the soil data of ecological geochemical environment in Zhanhua winter jujube growing area show that some important factors such as distribution, transform rule and modes of occurrence of beneficial and harmful elements in soils affect Zhanhua winter jujube quality and food safety. The elements such as Mo, Cd, Co, Hg, S, N and Se have the great influence on the quality of the winter jujube, and high content of Mo, Cd, Co, Hg and S, especially Hg, S and Cd, will reduce the fruit quality. Where these elements reach a certain content, they will severely reduce the fruit quality. On the contrary, the elements N and Se can improve the fruit quality of the winter jujube. It is suggested that the increase of the effective state content of Fe, K and water-extracting Se or decrease of the effective state content of B, Cu, P and N is favorable for the improvement of the winter jujube quality. The results obtained by the authors indicate clearly the way forward for fertilizer application and field management in growing winter jujube.
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Received: 25 May 2011
Published: 10 August 2012
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