防病养虾塘水质管理模式

THE MODEL OF WATER QUALITY MANAGEMENT FOR THE PRAWN CULTURE POND FOR DISEASE PREVENTING

养殖中国对虾的试验塘，以防病养虾塘水质管理模式加以管理，养殖周期为８７－１５９天，取得较好的经济效益。虾塘水的主要理化因子基本符合要求，ＮＨ３－Ｎｔ〈１ｍｇ／，０．００５ｍｇ／Ｌ≤ＮＯ２≤０．０１６ｍｇ／Ｌ，溶氧处于过饱和状态，ＣＯＤＭｎ〈１２ｍｇ／Ｌ，池塘单位水柱毛产氧量约为７ｇ（ｍ＾２．ｄ），总耗氧量约为５－１１ｇ／（Ｌ．ｄ），并借助增氧机补足池水所缺需氧量。

The test ponds for culturing Chinese prawn (Penaeus chinensis ) were managed under the modl of water quality management for preventing prawn diseases. The culture periods were 87 -159 days and good economic benefits were obtained. The main physical-chemical factors were fit with prawn's requirements, such as NH3- N＜1mg/L, CODMn＜12mg/L, 0.005mg/L＜ NO2-N＜0.016mg/L, O2% ＞100%. Gross oxygen daily productions and total oxygen consumptions of water column in each square meter of prawn ponds were about 7g/(m2·d). The lack contents of oxygen in prawn ponds were made up definciencies by aerators.