根据广东省惠阳县 1985 - 1986年网箱养殖的生产统计数据 ,拟合了真鲷的生产函数。该生产函数为二次模型 ,解释变量包括放养密度、鱼种规格、养殖期、饲料系数及其平方项和叉乘项。模型的决定系数为82 .8%。根据生产函数计算了在不同水平的养殖期、鱼种规格、鱼种价格及成鱼的市场价格等条件下获得最大经济效益的放养密度。 According to the production statistics of cage culture in 1985-1986 in Huiyang County, Guangdong Province, the production function of the red sea bream was fitted. The production function is a quadratic model. Explanatory variables include stocking density, species size, culture period, feed coefficient, square terms and fork multipliers. The model’s coefficient of determination is 82.8%. According to the production function, the stocking density which obtains the maximum economic benefit under different levels of cultivation period, species size, species price and market price of adult fish is calculated.