河南省灵宝县纪家庄乡,农民有间作苜蓿的习惯。据在光明农业社的调查:1951年在互助组时,春上把一块地边约有2分地的苜蓿挖掉种上了棉花,秋收以后这2分苜蓿茬棉花收了50斤籽花,比未轮栽的2分棉花多收籽棉18斤。转社后,在1954年又将小麦和苜蓿轮栽,试验结果:苜蓿茬的1亩小麦收 Jiarong County, Henan Province Jiacheng Township, farmer intercropping alfalfa habits. According to the investigation of Guangming Agricultural Association: In 1951 in the mutual aid group, on spring a piece of alfalfa about 2 points on the ground planted on cotton, autumn harvest after 2 points alfalfa crop received 50 pounds of seed cotton, compared with Unsupported 2 points of cotton received more than 18 pounds of cotton seed. After the transfer to society, in 1954 again turn the wheat and alfalfa rotation, the test results: alfalfa crop of 1 mu of wheat harvest