【摘要】 EM有明显的促生长和改善水质的作用，在对虾养殖的早期以2ppm为佳，后期以4～6ppm为宜。各种指标的综合分析表明：EM加充氧和EM混合在饵料中联合使用，可显著地提高对虾的生长和成活率。更多还原

【Abstract】 EM can obvious promote prawn grow and improve the quality of water. Uesing 2ppm EM is very effective in the early period of prawn culture, as well as, uesing 4 - 6ppm in the later period.Analysing Various indexes indicates: uesing EM in replenishing Oxygen and mixing in feed can remarkable improve growth and survival rate of prawn更多还原