新疆土壤微量元素的含量与分布

本文论述了新疆土壤中Fe,Mn,Zn,Cu全量和有效态含量及其分布.Fe的全量0.3-5.1%(平均值为2.4%),有效态含量0.16-504.00ppm(18.20ppm);Mn的全量59-1550ppm(564ppm),有效态含量0.38-41.60ppm(4.86ppm);zn的全量9-216ppm(75ppm),有效态含量0.08-11.84ppm(1.00ppm);Cu的全量5-145ppm(28ppm),有效态含量0.06-19.20ppm(1.22ppm).

CONTENT AND DISTRIBUTION OF TRACE ELEMENTS IN THE SOILS OF XINJIANG

This paper deals with the distribution and the total and available contents of Fe, Mn, Zn,and Cu in soils of Xinjiang.The content of the total iron in soils of Xinjiang is very high (0.3-5.1%), but with a greater fluctuation of available iron (0.16-504ppm).Some of the soils such as brown desert soil, gray desert soil, relic saline soil, saline soil and rakyric soil are deficient in iron.The content of the total manganese (59-1550 ppm) in soils is moderate,but the content of the available Mn (0.38-41.6ppm) is very low.It has been found that the brown desert soil, gray brown desert soil, gray desert soil,sterozem soil, saline soil and takyric soil in Xinjiang are severely deficient in manganese.The contents of the total Zn (9-216 ppm) and available Zn (0.08-11.84 ppm) in siols are lower.The brown desert soil, gray brown desert soil,sierozem soil, brown soil and saline siol in this region are severely deficient in zinc.The contents of the total Cu (5-145ppm) and available Cu (0.06-19.20 ppm) in soils are higher.Most of the soils in the region are adequate in Cu with the exception of brown desert soil and gray brown desert soil which are mainly distributed in the gravel gobi.