根据 1990、1998年鲢、鳙渔获物的年龄组成 ,相关年份的放养尾数及 1995年后的历年捕获量 ,结合可捕群体、补充群体等假设条件 ,利用修正的“恒定参数系统法”拟合分析了 1995年溢洪后大伙房水库鲢、鳙的残存率、死亡系数、回捕率 ,探讨了′95溢洪对该水库鲢、鳙渔业的影响 ,并根据理论捕获量推算出溢洪造成的损失分别为鲢 2 50～ 350t ,鳙 2 37～ 4 36t。 According to the age composition of silver carp and gray catfish in 1990 and 1998, the stocking mantissa in the relevant years and the catch in the past years after 1995, combined with the assumptions of the catchable population and the supplementary population, the modified “Constant Parameter System” The residual rate, mortality and recovery rate of silver carp and bighead carp in Dahuofang Reservoir after spill-over in 1995 were analyzed to explore the effect of spillway95 on the silver carp and bighead carp in the reservoir, and the spillover was calculated according to the theoretical catch Caused by the loss of silver carp 2 50 ~ 350t, 鳙 2 37 ~ 4 36t.