吉林省梨树县地处松辽平原腹地的黄金玉米带上,是国家商品粮生产基地县之一。多年来,由于对土地掠夺性生产、化肥的大量使用和传统落后的耕作方式,致使土壤不断板结、硬化和盐碱化,耕层逐渐变浅、犁底层不断加厚、地力逐年下降,严重影响作物的产量和品质,导致粮食产量徘徊不前。近2年来,梨树县按照吉林省 Lishu County, Jilin Province is located in the hinterland of Songliao Plain gold corn belt, is one of the country’s commodity grain production base counties. Over the years, due to the predatory production of land, the heavy use of chemical fertilizers and the traditional backward farming methods, the soil is constantly knotted, hardened and salinized, and the tillage layer gradually becomes lighter and the ground plow is continuously thickened. The ground force decreases year by year, seriously affecting The yield and quality of crops have led to stagnant food production. The past two years, Lishu County, according to Jilin Province