The Cluster analysis model and AHP model were used to ascertain the evaluating cell and the weightiness of evaluating element, the Fuzzy model was used to evaluate the level of soil nutrients.

• 长岭县土壤养分水平可分为四类；总体肥力水平较低；养分处于贫乏状态；且分布上呈东高西低的分布规律.