Soil suitability evaluation method and device

The invention provides a soil suitability evaluation method and device and belongs to the soil assessment technical field. The soil suitability evaluation method comprises the following steps that: any one method is selected from a fuzzy mathematic method, a gray relational analysis method and an comprehensive index evaluation method as a first soil evaluation method; 2, any one method is selectedfrom the fuzzy mathematic method, the gray relational analysis method and the comprehensive index evaluation method as a second soil evaluation method; the soil fertility parameters of soil to be evaluated are calculated according to the selected first soil evaluation method, and with the obtained soil fertility parameters adopted as suitability evaluation factors, the second soil evaluation method is adopted to perform soil suitability evaluation to obtain a soil suitability coefficient; and a soil suitability evaluation level corresponding to the soil suitability coefficient is searched. With the above process adop