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根据吉林省第二次土壤普查资料 ,对黑土中微量元素B、Cu、Fe、Mn、Mo和Zn的全量、有效态含量、它们在土壤剖面中的迁移分布等环境地球化学特征及其影响因素进行了研究 ,得出如下结论 :①吉林省黑土B、Mn、Mo、Zn的全量缺乏 ,Cu、Fe的全量略低 ;②黑土B、Cu、Zn的有效态含量缺乏 ,其中Zn严重缺乏 ;③黑土剖面中 ,B、Cu、Fe、Mn、Mo、Zn等微量元素全量与有效态含量分布相似 ,均以淋溶层最低 ,表层和淀积层较高 (Mo的全量除外 )。微量元素有效态含量剖面分布中淀积层层次较深 ,表层富集程度稍强 ;④黑土中B、Fe、Mn、Mo、Zn的有效态含量与土壤有机质含量呈显著的正相关 ;B、Mo的有效态含量与 pH值呈显著正相关 ,而Cu、Fe、Mn、Zn的有效态含量则与pH值呈负相关 ;黑土B、Cu、Fe、Mn、Mo、Zn有效态含量与其全量均达到显著相关水平。根据吉林省黑土中微量元素全量和有效态含量分布的特点 ,需施用微量元素肥料 ,增加黑土中微量元素的含量 ,促进该地区农业的可持续发展
According to the data of the second soil survey in Jilin Province, the environmental and geochemical characteristics of trace elements B, Cu, Fe, Mn, Mo and Zn in black soil and their distribution in the soil profile and their influencing factors The conclusions are as follows: ①The total amount of B, Mn, Mo and Zn in the black soil of Jilin Province is scarce and the total amount of Cu and Fe is slightly lower; ② The available content of B, Cu and Zn in the black soil is deficient, (3) In the black soil profile, the contents of trace elements such as B, Cu, Fe, Mn, Mo, Zn and so on are all distributed in the same order with the lowest content of leaching layer and the highest of surface layer and deposit layer. The effective content of trace elements in the profile distribution of deep deposits, the surface enrichment degree slightly stronger; ④ black soil B, Fe, Mn, Mo, Zn effective content and soil organic matter content was significantly positively correlated; B, The effective content of Mo was positively correlated with pH value, while the effective content of Cu, Fe, Mn and Zn was negatively correlated with pH value. The effective content of B, Cu, Fe, Mn, Mo, All reached significant correlation level. According to the characteristics of total and effective contents of trace elements in black soil in Jilin Province, trace element fertilizers need to be applied to increase the content of trace elements in black soil so as to promote the sustainable development of agriculture in this area