近年来,我镇大力推广的“无公害水芹田养蟹育鳜”技术,取得了667平方米产水芹3000～350千克以上,成蟹36千克、鳜鱼5.千克的综合效益。1.田间工程在水芹田四周开挖环形养殖沟,沟上口宽1.米,下底宽0.8米,深0.6米,进排水口设在田块相对的两角,进水口设在田埂上,出水口设在环沟底部 In recent years, my town vigorously promote the “pollution-free water cedar crab breeding yo” technology, made 667 square meters of cress production of more than 3000 to 350 kg, 36 kg of crabs, catfish 5. kg of the comprehensive benefits. 1. Field works in the cedar fields around the excavation of circular breeding ditches, ditches 1.85 meters wide mouth, the bottom width 0.8 meters, 0.6 meters deep, inlet and outlet located in the opposite corners of the plots, water inlet located in the ridge , The outlet located in the bottom of the ring groove