用建立效益函数的方法确定对虾适宜放苗的水温指标的探讨

A SURVEY ON WATER TEMPERATURE CRITERIA FOR PRAWN BREEDING BY USING BENEFICIAL FUNCTION

通过试验研究得出如下结论：1、对虾适宜放苗的湿度范围为16.0—20．0℃，为常年的4月下旬到5月下旬，大约30－40天的时间．2、水温17．5℃时放苗，放苗后两个月内生长最快；但是，水温17.0℃时是放苗养殖，效益最为理想。3、水温14．0℃时放苗成活率虽然已达56％，但生长缓慢，效益低下是不可取的。

Following results were obtained by the survey:1. The appropriate water temperature for breeding was 16. 0- 20. 0℃.2. The prawn firstly being bred at 17℃ grew quickly at water temperature 17. 5℃ for two months. 3. 56% prawn were alive when it bred at 14℃ but grew much slowly later on