PROBING INTO THE METHODOLOGY FOR CLASSIFYING CAUSES TYPES OF MEDIUM- LOW YIELD FARMLAND
中低产田成因类型划分方法的研究

According to satisfiability for environmental factor calculation,a quantitative analysis on the major limiting factors of the medium low yield farmland was carried out.Based upon this,the cause types of the medium low yield farmland was classified which is of practical value to certain degrees to the exploitation and transformation of the medium low yield farmland.