北方地区高密度养殖池塘栽植空心菜对养殖水体水质指标的影响

Effect of Mater Convolvulus on the Indicators of Water Quality in High Density Breeding Pond in the North

摘要: 以透明度、溶解氧、pH值、氨氮、亚硝酸盐氮、总氮、总磷、高锰酸盐为主要水质指标研究在北方高密度养殖池塘内以浮床形式栽培空心菜对养殖水质指标的影响。通过跟踪测试，结果表明，在北方地区高密度养殖池塘内以生物浮床的形式栽植空心菜，在空心菜覆盖率为8%和15%的两个试验池塘与正常养殖池塘的对比中，栽植空心菜的试验池塘的透明度明显要高，而氨氮、亚硝酸盐氮、总氮、总磷则明显要低，溶解氧、pH值和高锰酸盐的对比则不明显，试验塘的鱼类产量有所提高。研究说明，在北方寒冷地区高密度养殖池塘内以浮床的形式栽培空心菜能够起到很好的净化养殖水体的作用，并且能够有效地提高养殖的经济效益。

Abstract: Effects of mater convolvulus in the form of the floating floor on the indicators of water quality in high density breeding pond in the north were researched by transparency, dissolved oxygen, pH, ammonia nitrogen, nitrite nitrogen, total nitrogen, total phosphorus and potassium permanganate as the main water quality indicators. The results showed by tracing test that three trails of water convolvulus coverage rate of 0% (control), 8% and 15% in the form of the floating floor were im-plemented in high density breeding pond in the north. Transparency in ponds of planting water convolvulus was significantly higher than that of control pond, but ammonia nitrogen, nitrite nitro-gen, total nitrogen, total phosphorus was significantly lower, dissolved oxygen, pH, potassium per-manganate was not significant, fish yield in test pond significantly increased. Research shows that it can play very good role in purifying aquaculture water for high density breeding pond in the north to plant mater convolvulus in the form of the floating floor and effectively improve the economic benefits of aquaculture.