娄烦县总耕地面积28.5万亩,马铃薯播种面积8万多亩,占总耕地面积近30％,马铃薯间作豆类(豇豆、尖豆)4.1万亩,占马铃薯播种面积的50％。马铃薯亩产由以前的1,440斤提高到1,590斤,平均每亩多收豆类 Loufan County has 285,000 mu of arable land and 80,000 mu of potato sown area, accounting for nearly 30% of the total cultivated land. There are 41,000 mu of intercropped bean (cowpea and bean), accounting for 50% of the sown area of ​​potato. The yield of potato increased from 1,440 pounds to 1,590 pounds in the past, with an average of more beans per mu