7.Based cost output elasticity, under increased output of milkfish cultivation industry for1%, total cost increases 0.731%;polyculture of milkfish increases 0.817%.

• 由成本产出弹性值可以看出，虱目鱼单养产业产出增加1%25时，总成本将上涨0.；731%25，虱目鱼混养成本将上涨0