Can hold back drainage canal of farmland runoff trophism pollutant

The utility model discloses a can hold back drainage canal of farmland runoff trophism pollutant, including the irrigation canals and ditches main part, the left side fixedly connected with setting tank of irrigation canals and ditches main part inner wall bottom, the left side of setting tank and the left side fixed connection of irrigation canals and ditches main part inner wall, the left bottomof irrigation canals and ditches main part is provided with the inlet tube, the right -hand member of inlet tube runs through the inside that irrigation canals and ditches main part and setting tankjust extended to the setting tank from a left side to the right side in proper order. The utility model discloses a setting tank, inlet tube, sediment are collected box, spout, slider, fixed block, fixed rope, mounting panel, pulley, connecting block, bracing piece, supporting shoe, antifriction bearing, rotatory pivot, reel, carrier of microorganism and outlet pipe and is mutually supported, andbe more ideal to the treatm