论文部分内容阅读
1.施放固氮菌法在里海渔业研究所曾将固氮菌当作肥料施放在池塘中,可明显提高鱼产量。施用方法;注水前先在干燥的池底施足厩肥,注水后再施放绿肥,投放鱼种后每公顷再施纯固氮菌培养基2公斤和过磷酸钙60公斤。2.脂肪饲料法英国西部渔业实验站曾用半精制饲料添加4～8%的脂肪(以脂肪酸甘油三酯为最好)喂养鱼苗,可使鱼苗生长速度提高30%,死亡率降低18%。3.水浸稻草法英国水生生物研究中心发现,在池水中浸泡稻草或麦草,既能抑制水中杂
1. Nitrogen-fixing bacteria method In the Caspian Fisheries Research Institute, nitrogen-fixing bacteria were used as fertilizers in the ponds, which could significantly increase fish production. Application method; before watering in the bottom of the pond facilities enough manure, water and then cast green manure, put the fish after re-application of pure nitrogen-fixing bacteria medium 2 kg and superphosphate 60 kg. 2. Fat Feed Method The Western Fisheries Experiment Station in the United Kingdom used semi-refined feed to feed fry with 4-8% fat (the best is fatty acid triglyceride), which increased the fry’s growth rate by 30% and the mortality rate by 18%. 3. Immersed straw France Aquatic Biological Research Center found that immersing straw or straw in the pool of water, can inhibit the water miscellaneous