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在施足基肥的盐碱地新池塘中,将有机肥、无机肥氮、磷、微量元素按比例连续不断地配方施肥和水质调控,使水体中 NH4+ N+ NH3 N为 0.835 8 mg/L, PO43- P为 0.128 6 mg/L, SiO2为 1.49 mg /L, N/P为 6.02∶ 1。微量元素 Fe、 B、 Mn、 Zn、 Mo、 Co分别按 60、 50、 50、 5、 5、 5μ g/L施入池水,隐藻、硅藻为优势种群的浮游植物总生物量达到 46.939 mg/L,叶绿素为 233.572μ g/L,浮游动物为 20.730 7 mg/L。小三毛金藻的生物量控制在 0.05 mg/L以下,占总生物量的 0.11%,成功地预防了小三毛金藻对鱼类的危害。使粘附着微量元素和附生着大量微生物的有机腐屑占有机悬浮物的 75%。试验池塘获得了平均 50 g/尾以上的大规格鱼种 382.7 kg/667*u的高产量,节约了饲料和肥料。
In the Shizujiao new salinization ponds, organic fertilizers, inorganic fertilizers nitrogen, phosphorus, trace elements in proportion to the continuous formula fertilization and water quality control, so that the water NH4 + N + NH3 N 0.835 8 mg / L, PO43 -P was 0.128 6 mg / L, SiO2 was 1.49 mg / L, N / P was 6.02: 1. The total phytoplankton biomass of trace elements Fe, B, Mn, Zn, Mo, Co was 60, 50, 50, 5, 5 and 5 μg / L, respectively. / L, chlorophyll was 233.572μ g / L and zooplankton was 20.730 7 mg / L. The biomass of C. parviflora was controlled below 0.05 mg / L, accounting for 0.11% of the total biomass, which successfully prevented the harm of C. parviflora to fish. So that the adhesion of trace elements and attached to a large number of organic micro-organic organisms accounted for organic suspended solids 75%. The experimental ponds achieved a high yield of 382.7 kg / 667 * u, a large size fish species on average over 50 g / tail, saving feed and fertilizer.