山东省土壤微量营养元素含量分布

本文论述山东省土壤中B、Mn、Zn、Cu、Fe有效态含量及分布。有效硼含量0.04-6.79ppm,平均0.48ppm;易还原态锰9-1345ppm,平均169ppm;有效锰1.5-175.9ppm,平均17.1ppm;有效锌0.04-14.56ppm,平均0.54ppm;有效铜0.03-20.64ppm,平均1.08ppm;有效铁1.6-162.0 ppm,平均12.6ppm。不同土壤类型微量元素含量有明显差异,主要特征为:棕壤、褐土缺硼,潮土、砂姜黑土缺锌,水稻土富铁、锰、铜,盐土富硼。其分布呈明显的地域性,可分为山地丘陵(鲁东和鲁中南)低硼、中锌、高锰区;泛滥平原(鲁西北)低锌、中硼锰区。

CONTENT AND DISTRIBUTION OF TRACE ELEMENTS IN THE SOILS OF SHANDONG PROVINCE

This paper deals with the distribution and available contents of B, Mn, Zn, Cu and Fe an soilis of Shandong Province. The range and mean value of the available contents of B, Mn, Zn, Cu and Fe in the soils are 0.04-6.79 ppm with an average of 0.48, 1.5-175.9 ppm with an average of 17.1 ppm, 0.04-14.56 ppm with an average of 0.54 ppm, 0.03-20.64 ppm with an average of 1.08 ppm and 1.6-162.0 ppm with an average of 12.6 ppm respectively. The range and mean value of easily reducible Mn is 9-1345 ppm with an average of 169 ppm. The content of available trace elements in different soil types varys greatly. It has been found that the Brown earth and Cinnamon soil in Shajia Shandong are severely deficient in B, the Fluvio-aquic soil and Shajiang black soil are deficient in Zn, the paddy soil is rich in Fe, Mn and Cu, and the Saline soil is rich in B. The availability of trace elements in soils influenced by many factors. The available trace element contents in the soils are offen increased with lowing of soil pH and increasing of organic materials. The contents of available trace elements soils of Sliandong have a regional distribution obviously. The soil in hilly region have a lower B content, moderated Zn content., and higher Mn content. The flood plain has a lower Zn content, moderate B content and moderate Mn content.