青海耕层土壤微量元素含量分析

[目的]为贵德县土壤微肥科学施用、作物合理布局和配方肥的确定提供基础数据。[方法]采用姜黄素比色法和原子吸收分光光度法，测定贵德县376个耕层土壤微量元素含量。[结果]贵德县有效微量元素平均含量B为0．339mg／kg，Cu为0．688mg／kg，Fe为3．798mg／kg，Mn为13．145mg／kg，Zn为2．554mg／kg，其中Fe、B含量缺乏，Cu、Mn含量适中，zn含量丰富。[结论]不同乡镇耕层土壤有效微量元素丰缺程度差异明显。不同土壤中有效微量元素含量之间差异不明显。

Analysis of Trace Elements in Topsoil of Qinghai Province

[ Objective ] The research aimed to provide the basic data for the scientific application of soil trace elements, the regular distribution of crops and the determination of formula fertilizers. [ Method] Using the curcumin colorimetric method and atomic absorption spectrophotometry, trace element contents of 376 topsoils in Guide County were studied. [ Result ] The county＇ s average content of available trace element B was O. 339 mg/kg, Cu was O. 688 mg/kg, Fe was 3. 798 mg/kg, Mn was 13. 145 mg/kg, and Zn was 2. 554 mg/kg. The content of Fe and B wasn＇ t enough, Cu and Mn content was moderate, and Zn content was rich. [ Conclusion] Among different villages and towns, soil trace element con- tents in topsoil were different obviously, and differences among different effective trace elements content in soil species weren＇t obvious.