云南省主要地质背景区钴、铁和硒在岩石—土壤—饲料中的分布与转移规律研究

DISTRIBUTION AND TRANSPORTATION OF COBALT,IRON,AND SELENIUM FROM ROCK TO SOIL TO FORAGE IN MAIN GEOLOGICAL BACKGROUND ZONES IN YUNNAN PROVINCE

对云南省反刍家畜主要生产基地所属的6个地质背景区的土壤、岩石和饲料样品的钴、铁和硒元素进行测定分析。结果表明:土壤和饲料钴、铁和硒元素含量在玄武岩(Ⅴ)和碳酸岩盐红壤区(Ⅰ)较丰富;碳酸岩盐、碎屑岩和玄武岩混合型黄红壤区(Ⅱ)居中;而由碎屑岩(Ⅲ)和变质岩(Ⅵ)发育的土壤区土壤和饲料钴、铁和硒元素最低。饲料中钴、铁和硒的含量受地质背景值,特别是土壤中元素的丰度的影响较大。

Cobalt,iron,and selenium in rocks,soils,and forage plants,of six background zones different in geology in the major ruminant production base of Yunnan were determined and analyzed. Results show that in terms of abundance of cobalt,iron,and selenium in soil and forage,the Paleozoic Basalt Zone (Ⅴ) and Carbonate Red Earth Zone (Ⅰ),are at the top,the Yellow-Red Earth Zone of mixed of Carbonate,Clastic Rock and Basalt (Ⅱ) in the middle and the Purple Earth Zone of Mesozoic Clastic Rock (Ⅲ),the Yellow-Red Earth Zone of Clastic Rock (Ⅳ),and the Dark Red Earth Zone of Precambrian Metamorphic Rock (Ⅵ),at the bottom. The concentrations of cobalt,iron,and selenium in forages are affected by the geological background values,especially abundances of these microelements in the soil.