以没有放流幼虾的1987年的河口区仔虾相对数量和8月份幼虾数量比值(109)为系数(a),以ni=axi式(ni是i年自然补充量,x_i是i年河口区仔虾相对数量),估算胶州湾中国对虾有关年份自然补量。将各年8月份幼虾数量(Ni)扣除自然补充量后,再按捕捞系数(k)为0.75,以Ci=(Ni—ni)k/R式估算放流虾的回捕量和回捕率(C)。结果表明,1985,1986和1988—1990年回捕率分别为16.05,11.23,8.49,13.69和17.40％。对虾放流增殖效果显著。 Taking the ratio of the relative number of juvenile delvo in 1987 and the juvenile shrimp in August (109) as the coefficient (a), we use ni = axi (ni is the natural supplement for year i, Area relative number of larvae), estimated Jiaozhou Bay shrimp year natural complement. After subtracting the natural supplements from juvenile shrimp (Ni) in August of each year, the catch coefficient (k) was calculated to be 0.75 and Ci = (Ni-ni) k / (C). The results showed that the recovery rates in 1985, 1986 and 1988-1990 were 16.05, 11.23, 8.49, 13.69 and 17.40% respectively. The multiplication effect of shrimp discharge was significant.