机构地区: 四川畜牧兽医学院
出 处: 《四川畜牧兽医学院学报》 2000年第1期30-34,共5页
摘 要: 通过合理的施肥 ,培植饵料生物 ,提高水库养鱼的鱼产量和经济效益 ,为水库养鱼提供了可靠的科学施肥依据 ;同时也对水库养鱼的合理放养密度进行了探讨 ,试验证明 ,促进浮游生物大量生长、繁殖适合的有效氮磷比为 6.9∶1,按肥料有效成份计 ,无机肥的合理施肥量为 0 .67— 1.0 0kg hm2 .年。鱼种放养规格全长 8— 10cm ,放养鱼量 13- 17尾 hm2 ,施肥 (按有效成份计 )换鱼比 1∶3.7,亩产 55— 75kg。 The writers raised reservoir fish production and econonic efficiency as a result of the plankton culturing and reasonable fertilization,. The research supplies scientific fertilization methods as well as the reasonable stocking density for reservoir pisciculture. The test proved that effective nitrogen-phosphorus ratio which promotes plankton growth and repreduction is six point nine to one. Reasonable fertilization volume, according to fertilizer′s effective volume, is 0.67—1.00 kg per hm 2 per year. Fingerling stocking size is 8—10 cm long. Stocking volume is 13 to 17 per hm 2, fertilizer (efficiency volume) to fish rate is 1 to 3.7, fish product is 55 to 75 kg per Mu.