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我县地处黄淮中北部,属暖温带气候,年平均气温14℃,热水性鱼类生长期约110天。为探索北方地区淡水白鲳养殖的新路子,推动暖水鱼类养殖在我区的开展,我们于2005年进行了池塘主养淡水白鲳高效养殖试验,取得了较好的效果。现将试验报告如下。一、材料与方法1.池塘条件试验塘为一改
My county is located in northern Huanghuai, is a warm temperate climate, the annual average temperature of 14 ℃, hot water fish growth period of about 110 days. In order to explore new ways of breeding freshwater whitefowl in northern China and to promote the development of warmwater fish culture in our district, we carried out the experiment of high-efficiency cultivation of freshwater whitefly in ponds in 2005, and achieved good results. Now the test report is as follows. First, materials and methods 1. Pond ponds as a test change