【摘要】 系统分析了影响大枣品质的生态地质因素。研究认为 :品质优良的大枣主要产在黑云斜长片麻岩分布区 ,是由于黑云斜长片麻岩较其他类型的岩石风化层厚 ,裂隙发育 ,P、Sr、稀土元素含量高 ,K含量高并以缓效态赋存在黑云母中 ,较其他岩石类型中的K易被植物吸收 ;从土壤地球化学背景分析表明 ,优质大枣分布区与P、Sr、Na和稀土元素总量的富集区吻合性最好 ,Ni、Cr含量低 ,其他元素的分布相对稳定 ,在优质区没有明显的富集特征 ;优质大枣主要分布在海拔 5 0 0m以下的阳坡区 ,在 5 0 0m以上的低温湿润区枣树的分布相对较少 ,品质较差更多还原

【Abstract】 This paper systematically analyzes the factors of ecological geology influencing the Chinese date quality. It is because the mantle rock is thicker, cracks are well developed, contents of P,Sr,K,Na and ∑REE are more in the biotite-plagioclase gneiss than in the other rocks and K occurred mainly in other rocks that the Chinese date in good quality are principally distributed in biotite-plagioclase gneiss. On the basis of an analysis of the soil geochemical environment, the Chinese date in good quality in this area tallies with the area rich in P,Sr,Na,∑REE,while Ni and Cr are lower. The Chinese date in good quality are mainly distributed below the height of 500m above the sea level. The Chinese date trees in low temperature and moist grow less in the area above 500m and the quality is lower than those in the area below 500m.更多还原