田间的排灌渠道经过几年的冬冻春化、风雨水流的冲蚀,沟底逐渐淤塞,并长满杂草。因此,清淤是农田基本建设的一个重要项目。过去,清淤全靠人工,工效低,劳动强度大,迫切要求机械化。近年来,不少单位研制了各种类型的清淤机,虽然都处于研制阶段,但已积累了不少经验。为了交流情况,现介绍几种清淤机,供各地参考。 Field irrigation and drainage channels after several years of winter vernalization, erosion of wind and rain, ditch gradually silted, and covered with weeds. Therefore, dredging is an important project of farmland capital construction. In the past, dredging was based entirely on labor, low efficiency, labor intensity, and urgently required mechanization. In recent years, many units have developed various types of dredging machines. Although they are under development, they have accumulated a great deal of experience. In order to exchange information, several dredging machines are now presented for reference.