河南省开封县农科所豫东砂区人均耕地多,肥料严重不足,花生地很少施肥甚至不施肥,加上花生面积大,一年一熟、年年重茬以及冬春干旱风蚀危害,造成有机质缺乏,养分比例失调,花生产量低而不稳,多年徘徊在100斤左右。针对上述问题,从1980年秋开始在我县范村砂区试种毛叶苕子,进行花生绿肥轮作试验研究。 Kaifeng County, Henan Province, Agricultural Science Institute of East sand area per capita arable land, a serious shortage of fertilizers, peanut little fertilizer or not fertilization, coupled with a large peanut area, a year of cropping, annual dry cropping and winter and spring drought damage caused by wind erosion, resulting Lack of organic matter, nutrient imbalance, low and unstable peanut production, hovering for many years at about 100 pounds. In response to the above problems, from the fall of 1980, we started to test the leaf mullet in the Fancun sand area of ​​our county for the experimental study on the peanut green and fertilizer rotation.