斑节对虾养殖过程中常出现个体大小参差不齐、“两极分化”的情况,影响了养虾经济效益。为此,我们在开展斑节对虾养殖高产试验的同时,进行了缩小个体“两极分化”的试验,取得良好效果。实施试验前斑节对虾平均体长4.8cm,5.0cm以上占47.6%,3.5cm以下占30%;试验后20天平均体长7.2cm,7.3cm以上占41%,6cm以下仅为9.8%。养殖89天,收获时平均亩产367.2公斤。一、投饵先粗后精,先干后鲜,少量多餐。对虾个体出现“两极分化”后,我们在试验池设置小吊网投饵观察,发现 Penaeus monodon often appear in the process of uneven size of individuals, “polarization” situation, affecting the economic benefits of shrimp farming. To this end, we carried out experiments to reduce the individual “polarization” while carrying out high-yielding trials of M. monodon and achieved good results. Before the test, the average body length of Penaeus monodon was 4.8cm, 47.6% above 5.0cm and 30% below 3.5cm. The average body length was 7.2cm after 20 days, 41% above 7.3cm and 9.8% below 6cm. Breeding 89 days, the average yield per mu 367.2 kg. First, the bait first fine, dry first, a small amount of meals. Prawn individuals appear “polarization”, we set up a small hanging net in the test pond feeding observation found that