为探索绿肥新的种植方法,解决平原黑土地带玉米主产区增粮缺肥,养畜少草的矛盾,在省土肥站的指导下,地区土肥站和庆安县农科所协作,从1982年开始连续三年进行了两垄玉米间种一垄草木樨试验(以下简称2∶1间种)。它是根据作物边际 In order to explore new planting methods of green manure and solve the contradiction between increasing grain and shortage of grass and raising livestock and grass in the main corn producing areas in the black soil area of ​​the plain, under the guidance of the provincial earth fertilizer station, the local earth fertilizer station cooperated with Qing’an Agricultural Science Institute from 1982 Beginning three consecutive years, two rows of maize intercropping a ridge of licorice test (hereinafter referred to as 2: 1 intercropping). It is based on crop margins