我省1995年普遍少雨，江北多数地区旱情严重，池塘干涸、小河断流，成鱼塘冬季无法投放。一些灌溉能力较差的地方，连鱼种并塘越冬用水都有困难，虽然将几口塘之水集中于一口塘，但由于渗漏等原因，往往达不到鱼种越冬所需的深度。越冬期池水深度和日常管理是越冬鱼种成活率高 In 1995, our province was generally drier than usual. In most parts of Jiangbei, the drought was severe, the ponds dried up, and the river was cut off. As a result, the fishponds in winter could not be put into operation. Some places with poor irrigation capacity have difficulties even with species of fish and winter wintering water. Although several ponds of water are concentrated in a pond, the depths required by species for overwintering are often not reached due to leakage and other reasons. Overwintering water depth and daily management is the survival rate of wintering species