关键词: 毛刷丛, 水质净化, 健康养殖, 奥尼罗非鱼, brushes, water purification, healthy aquaculture, tilapia

Abstract: Using the brushes hanged in cement pool and formed a biofilm attached by microbial algae to purify water quality, we carried out a tilapia （T.aureus♀×T. nilotica♂）culturing test. The test, which cultured 2400 tilapia seedlings with body length of 2~ 3 cm in 4 open-air cement pools, began on May 6th in 2011. After 182 day culturing, the two test pools harvested 1,179 individuals with average body weight of 197.0 g, the survival rate was 98.25% and the total output was 232.25 kg. The two control pools harvested 906 individuals with average body weight of 197.6 g, the survival rate was 75.50%, and the total output was 179.02 kg. The experimental results showed that, the test pool could improve water transparency, maintain the water temperature relatively stable, purify water quality, and not exchange the water or reduce the water exchange quantity, so as to reach the result of health cultivation. Key words: brushes; water purification; healthy aquaculture; tilapia