The task of the fishery machinery mating and its application is one of the research subjects listed in the eomprehensire technical experiments in pond culture of great area with high productivity in Shanghai suburbs.The researchists have compared various fishery machines, suitble in experiments for the modcl selection, provided a special technical training course for the farmers and carried out a practical experiments in Liantang country, Qingpu county in the meantime in order to accomplish this task well in practical way. On the grounds of these the author put forward in this paper three models of fishery machinery mating with deferent productive scales,such as 500, 750, 1000kg/per mu as net productivity.
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