我们公社北支大队,地势低洼,去年曾一度出现涝灾。当时公社仅剩余一台东方红—75拖拉机和一台20″丰产50混流泵(参数见后),东方红—75拖拉机输力皮带轮输出功率为52马力,20″丰产50混流泵配套功率为102马力,在这种功率不配套的情况下,我们采用了使水泵降速运行的办法,解决了当时缺乏机械,急需排涝的矛盾。具体作法如下:拖拉机通过平皮带带动水泵进行 North Branch of our commune brigade, low-lying, last year once appeared floods. At that time, there was only one Dongfanghong-75 tractor and one 20 “high-yield 50 mixed-flow pump (see below). At the time, the output power of Dongfanghong-75 tractor power pulley was 52 horsepower and that of 20” high yield 50 mixed-flow pump was 102 Horsepower, in this case of power does not match, we used the pump to run at reduced speed approach to solve the lack of machinery at the time, the urgent need of drainage contradictions. Specific practices are as follows: Tractor driven by a flat belt pump