前言众所周知,要使室外静水池内养鱼的产量增加,必须有充足的氧气.近年来国外对增氧引起了重视,已见到各种增氧装置对于鱼类生产效果的报告(Rappaport等,1976).作者等通过以往的研究得知,人为地使池水循环可以阻止沉淀层的形成(伊藤等,1974)和进行增氧(里见等,1975)来提高投饵养鱼的生产率,以及在此条件下的各循环 Preface As we all know, in order to increase the production of fish in outdoor hydrostatic pools, there must be sufficient oxygen. In recent years, foreign countries have paid much attention to aerobic aeration and have reported on the effects of various aerobic plants on fish production (Rappaport et al., 1976 ). According to previous studies, the authors have found that artificially circulating water in a pond can prevent the formation of sediment layers (Ito et al., 1974) and aeration (see, et al., 1975) to increase the productivity of fed fish The cycle under this condition