A STUDY ON THE CALCULATION MODEL OF THE SOIL MODIFICATION COEFFICIENT FOR LAND POTENTIAL PRODUCTIVITY EVALUATION IN ZHUOLU COUNTY,HEBEI PROVINCE
土地生产潜力评价中土壤修正系数模型的研究：以河北省涿鹿县为例

In order to accurately express the effect of soil conditions (including some geographic conditions, such as slope and groundwater) on land potential productivity, soil medification coefficient is suggested in this paper, which is defined as the degree to which the physiological and ecological requirements of crop growth can be satisfied by a certain soil under given climatic and imput level conditions.A calculation model of soil modifying coefficient is also designed and its calculation results correspond well with the judgements of the experts of land evaluation.