河蟹生态养殖池塘PVC管底层微孔增氧机的使用效果  

Research about using the microporosity PVC pipes bottom aerators in the crab ecology culture ponds

作　　者：戴恒鑫[1] 李应森[1] 马旭洲[1] 王武[1] 徐敏[1] 李祖军 

机构地区：[1]上海海洋大学水产与生命学院,上海201306 [2]大通湖天弘渔业有限公司,湖南益阳413000

出　　处：《广东农业科学》2012年第13期166-169,共4页Guangdong Agricultural Sciences

基　　金：国家星火计划项目(2011GA680001);农业部优质蟹种规模化繁育与养殖示范项目(nyhyzx07-045);上海市重点学科建设项目(Y1101);上海市中华绒螯蟹产业技术体系建设项目;上海高校知识服务平台

摘　　要：为了探索河蟹生态养殖池塘底层增氧机的使用规律,分别测定了12:00～14:00和0:00～6:00增氧时,距增氧机输出口1、3、5、7、10 m各点的溶解氧含量。结果表明,功率为2.2 kW的PVC管底层微孔增氧机持续开机2 h后,可以显著增加10 m内水域溶解氧含量;且试验组溶解氧含量显著高于对照组。根据河蟹生态养殖模式的特点,总结PVC管底层微孔增氧机的使用规律为:晴天中午开,日出前夕勤开;阴雨天夜晚长开;闷热天气延长开,大风天气可少开。To research the rule of using the microporosity PVC pipes bottom aerators in the crab ecology cuhure ponds, we determined the dissolved oxygen at daytime and dark in the points where the distance to the PVC pipes were 1 m, 3 m, 5 m, 7 m and 10 m. The results showed that if we sustaiuly used the microporosity PVC pipes bottom aerators about 2 hours, the dissolved oxygen could significantly increase within 10 meters, that the total power of the microporosity bottom aerators was 2.2 kW. At the same time, the dissolved oxygen of the experimental group was significantly higher than the matched group. According to the characters of the crab ecology culture pattern, the rule of using the microporosity PVC pipes bottom aerators could be summarized, we should turn on the microporosity bottom aerators in sunny day noon, and frequently turn on it before sunrise; we should sustainaly use the microporosity bottom aerators in the nighttime of rainy days; we could use the microporosity bottom aerators for more hours without wind, and for less hours with wind.

关 键 词：河蟹 溶解氧 底层微孔增氧 生态养殖 

分 类 号：S951[农业科学—水产养殖]