为了开辟花生大面积高产稳产的新途径,1973—1974年,我县在花生重点产区进行了花生施用石膏的试验示范.1973年在成集等公社设置七个试验,试验面积共4.8亩.1974年又分别在六个公社进行大田多点、大面积试验示范,面积达280亩,均取得显著增产效果. In order to open up new avenues for large-area, high-yield and high-yield peanuts, our county experimented with peanut gypsum in key peanut producing areas from 1973 to 1974. Seven trials were set up in communes such as Chengji in 1973 with a total area of ​​4.8 mu. In 1974, they conducted a series of demonstration projects in fields of more than 280 square meters in large fields in six communes, all of which achieved remarkable yield increases.