水产养殖技术的不断发展,促进了池塘养殖品种和放养模式的变化。养殖户为了在较小的空间创造较高的经济效益,他们只有在养殖品种和放养方式上进行科学的调整,用自己池塘的优势发展不同品种的养殖。利用这种方法才能达到预期的目的。现在我区有30%的养殖户发展一年二茬或两年三茬形式养殖,主要的养殖品种以鲫鱼、草鱼、湘云鲫鱼为主,这些品种的养殖面积呈上升趋势。为了及时了解本区的养殖品种、放养模式和经济效益,水产科技人员在2000年对我区养殖重点区域进行一年的调查,主要是为了摸清我区的养殖品种分布和各种品种养殖的经济效益情况,为我区的渔业发展和品种调整提供科学的依据。 The continuous development of aquaculture technology has promoted the changes of pond aquaculture species and stocking patterns. In order to create higher economic benefits in smaller spaces, farmers only have to make scientific adjustments in terms of breeding varieties and stocking ways, and develop different kinds of farms with the advantages of their own ponds. Use this method to achieve the desired purpose. At present, 30% of farmers in our district are cultivating two crops or two crops in one year. The main breeding species are crucian carp, grass carp and crucian carp. The cultivation area of ​​these varieties is on the rise. In order to keep abreast of aquaculture species, stocking patterns and economic benefits in this area, aquaculture scientists and technologists conducted a one-year survey of key areas for aquaculture in our district in 2000 mainly to find out the distribution of farmed species and breeds of various species in our region Economic benefits for our region to provide a scientific basis for the development of fisheries and species adjustment.