Soil Geochemistry Conditions Of Zizyphus Jujube Cv. Jinsi-xiaozao In Major Growing Areas Of Hebei Province

Zizyphus jujube cv. Jinsi-xiaozao is one of the famous high-quality fruit products in Hebei Province. Cangzhou Zizyphus jujube cv. Jinsi-xiaozao has a long cultivated history and producted over Cangzhou City such as Cang county,Xian county,Botou city,Jiaohe county,Yanshan county,Hejian county,etc. Cangzhou Zizyphus jujube cv. Jinsi-xiaozao also known as Hexi red Jujube because when skinning the dry Jujube, it will present the golden colour, and also has pearl looks and sweet tastes. Cangzhou Zizyphus jujube cv. Jinsi-xiaozao is salability at home and abroad for its good taste and high nutritions, which becoming the Cangzhou main and superiority industry.This article selects Cang county,Xian county and Botou city as the study area which have a large growning area. Using ecological-geology and geochemistry background materials based on previous reasearch results, takes out a geochemistry evaluation of the soil quality, The safety of Zizyphus jujube cv. Jinsi-xiaozao is tested, and especially studied the character of nutrient element's migration and distribution in soil. This study aims to provides scientific basis for the construction of high-quality Zizyphus jujube cv. Jinsi-xiaozao Planting base, so that the structure of agricultural industry can be optimized and the land resources can be used in a more reasonable way. Over all, the main results of the research are as follows:1,It is more practical to reflect the quality status of Zizyphus jujube cv. Jinsi-xiaozao through taking the objective and subjective measure together to definiting indexes weight of comprehensive quality.2,Through Multiple Regression between Zizyphus jujube cv. Jinsi-xiaozao quality indexes and soil elements contents. Combined with soil elements contents between high quality domain and poor quality domain, gets a series elements which impacting Zizyphus jujube cv. Jinsi-xiaozao quality:Fe,Cu,U,Mn,Co,Cl,Na. Further more,there is a positive correlation between quality of Zizyphus jujube cv. Jinsi-xiaozao and Fe,Cu,U, Mn,Co,while the others has a negative correlation.3,Through analysing the distribution character of target elements on surface soil in the study area, it is obviously that the elements are impacted by topography and geomorphology,especially Cl and Na which are higher when it is close to the coastal areas.4,Through evaluation of the soil environmental Geochemistry conditions of the study area, it gets the result that Arsenic, which is one kind of the eight heavy metals in soil,has the highest pollution index with single factor,which also has the biggest contribution rate to the valuation result on comprehensive quality of heavy metals in Soil . In a word, there is only a small piece of place in western Study areas, the boundary region of Botou city North western and Xian county south western has mild heavy metal pollutions. It also finds that there are some fluorides and iodides high-value region in the shallow ground water.5,Based on Zizyphus jujube cv. Jinsi-xiaozao quality elements and soil environmental conditions, it divides the study areas as Zizyphus jujube cv. Jinsi-xiaozao high-quality areas, suitable areas, inferiority suitable area and unsuitable area.