technique measures were reported for tilapia over-wintering in pond covered with plastic films.
报道了用简易大棚进行罗非鱼越冬的技术措施,包括大棚的选址与建没、进棚越冬鱼的选择要求、进棚时间、密度掌握、消毒办法以及进棚后的管理--温度调节、水质调节、饵料投喂、疾病防治提出具体方法。
In the present experiment,the characteristic and existent problem of air environmental situation in simple plastic shed larg house(shed) was studied by determining five indexs in and outside shed,closed with windows pig house(closed with windows),opened pig house(opened) winter and summer.
通过对大棚舍、砖瓦结构有窗式猪舍（有窗舍）和开放舍３种类型猪舍舍内、外和冬、夏季５项环境指标的测定，分析探讨简易型塑料大棚规模化养猪舍空气环境特点及存在的问题。