通过对吉林西部3个工作区土样的微量营养元素全量、有效量以及土壤pH值和有机质含量的测定,分析了土壤微量营养元素有效量特征及其影响因素。结果表明,吉林西部有效B基本不缺乏;有效Mn含量极丰富;有效Cu含量农安极丰富,明显高于其它2区,大安有效Cu含量样点间差异较大;土壤有效Zn基本不缺乏;有效Mo严重缺乏,且地区差异性较大;吉林西部有效Fe含量极丰富。土壤有效Mn、Cu和Fe含量受全量控制;B、Zn元素有效量受土壤pH值的制约;土壤有机质则与有效Mn和Fe呈极显著正相关。 Through the determination of the total amount and effective amount of soil micronutrients and soil pH value and organic matter content in the three working areas in the west of Jilin Province, the effective amount of soil micronutrients and its influencing factors were analyzed. The results showed that the available B in the west of Jilin Province was basically lacking; the effective Mn content was extremely abundant; the effective Cu content was very rich in agricultural security, significantly higher than the other two districts, the effective Cu content in Daan was significantly different; the available Zn in soil was basically lacking; Mo is seriously lacking, and the regional difference is greater; the effective Fe content in western Jilin is very rich. Soil available Mn, Cu and Fe contents were controlled by the total amount. The effective amount of B and Zn elements was controlled by soil pH value. Soil organic matter had significant positive correlation with available Mn and Fe.