涝洼地养殖罗氏沼虾试验

Experiment on Culture of Macrobrachium rosenbergii in the Low-lying Land

在水库区和河滩涝洼地挖池试养罗氏沼虾，1996年试养8亩，1997年试养10亩。采取清池肥水、池底设隐蔽物、投喂人工配饵、调控水质等措施，1996年共产罗氏沼虾400kg，平均亩产50kg，平均体长8．0cm，尾重17．5g，成活率30．5％，饵料系数3．5；1997年共产虾525kg，平均亩产75kg,平均体长8．5cm，尾重20g，存活率35％，饵料系数2．5。投入产出比分别为1：2．1和1：2．5。试验认为：山东半岛地区应采用塑料大棚提早培育苗种，以延长生长期，且宜投放大规格健壮苗种（1．5～2．0cm），适宜放养密度为1．5万尾／亩。

In the reservoir area and the flood land were digged ponds for trial culture of Macrobrachium rosenbergii. In 1996 the area of the trial culture was & mu and in 1997, 10 mu. Owing to taking such technical measures as pond clearing and water fertilizing,setting shelter on the pond bottom,feeding on the compound pellets and controlling water quality, 500kg of the M. rosenbergtt were harvested in 1996,per mu yield 50kg,average body weight 17. 5g and body length 8. 0cm,survival rate 30.5 %,feed coefficient 3.5; in 1997 the total output of M. rosenbergll was 525 kg, per wu yield 75 kg, average body weight 20 g and body length 8.5cm,survival rate 35 %,feed coefficient 2.5.The ratio of input and output was separately 1:2.1 and 1:2.5. The trial culture reached a conclusion :In Shandong peninsula use the plastic shed to move up the time for seed-rearing; release bigsized larvae(1.5~ 2.0cm), and the resonable density is 15 thousand larvae per mu.