机引五铧犁翻地中要留下堑沟,平堑沟是一项繁重的体力劳动,而且耗费人工多。平整每垧地的堑沟,大约平均需二十几个工日。而且人工平整的堑沟,土质干,墒情不好,抓不住苗,贫下中农意见很大。为了解决这个问题,榆树县弓棚公社十二号大队农机队土法上马,群众办科研,经反复试验,去年秋季试制成功了拖拉机牵引的铁木结构的悬挂平沟器(见图)。这种平沟器结构简单,制造方便,使用效果好,成本很低,效率很高。十二号大队去年秋天共翻地960余垧,这些地的堑沟用一台拖拉机牵引的平沟 Machine cited five plow turned to leave trench, flat cut ditch is a heavy manual labor, but also labor-intensive. The trenches of every place are flattened, and on average about twenty dozen days are required. And the artificial trenches, soil quality, moisture is not good, can not seize the seedlings, poor middle peasants have great views. In order to solve this problem, the Yushu County Gongpeng Commune No. 12 Brigade agricultural unit launched the indigenous law, the masses do scientific research, after repeated tests, last autumn trial success tractor traction iron wood hanging suspension ditch device (see photo). This flat ditch structure is simple, easy to manufacture, the use of good results, low cost, high efficiency. On the 12th last autumn, a total of more than 960 tons of land were torn down. The trenches of these areas were dug with a tractor