论文部分内容阅读
近几年,每年三四月份和八九月份,济南美里湖、白云湖,德州市陵县及河北省衡水湖、石家庄的部分鱼塘,相继发生鲢鳙鱼暴死病,给渔民造成很大经济损失。个别户在不到三天内死亡鲢鱼2000多千克。白云湖张柏松8亩鱼塘养草鲢鳙鱼种17万尾,尾重50克,3月18日发生鲢鱼上浮现象,先后采用
In recent years, in March, April and August each year, the deaths of silver carp and bighead carp have occurred in Merrill Lake, Baiyun Lake, Lingshui County in Dezhou, Hengshui Lake in Hebei Province and some fish ponds in Shijiazhuang. Economic losses. Individual households died in less than three days silver carp more than 2000 kilograms. Baiyun Lake Zhang Bosong 8 acres of fish ponds breeding silver carp and bighead carp species 170,000, tail weight 50 grams, silver carp on March 18 floating phenomenon, has adopted