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为解决拖拉机耕湿烂田的问题,上海拖拉机厂、川沙县农机一厂和市农科院农机所协作,于1975年上半年,对二台上海—50型拖拉机变型设计成四轮驱动拖拉机,并设计了配套的斜排耕耙犁,先后在上海、嘉定、青浦等县以及江苏省太仓县作了不同土质的多点试验,到十一月二十日止,共耕地五百多亩,其中配斜排耕耙犁耕地250亩左右,试验情况良好;特别是去年“三秋”雨多田
In order to solve the problem of tractor cultivating rotten rotten fields, Shanghai Tractor Factory, a farm machinery factory of Chuansha County and a farm machinery institute of the Municipal Academy of Agricultural Sciences collaborated. In the first half of 1975, a four-wheel drive tractor was designed for the Shanghai- In addition, a series of oblique tillage harrow plows were designed and tested in different locations in Shanghai, Jiading, Qingpu, and Taicang, Jiangsu Province. Until November 20, a total of 500 mu of arable land was cultivated. Among them, the inclined row rake harrow plowed about 250 acres of cultivated land, the test is in good condition; especially last year, “three autumn” rain more fields