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今年养虾者面临着比去年更为严峻的形势,很大程度上是因为对虾种质退化,虾苗质量更为低劣。据业内人士估计,今年上半年对虾苗放养大塘之后迅速发病,广东、海南、福建、广西有超过60%以上的养殖池塘不得不整塘排掉,重新放苗,江浙沪一带也开始出现了大量排塘现象。结合去年对虾苗放养形势,业界有反映:自从南美白对虾引进以来,轰轰烈烈养了四五年,种质退化问题越来越严重。如果种质问题不得到彻底解决,对虾养殖会不会象当年中国对虾与斑节对虾养殖那样从高峰跌落低谷?
Shrimp farmers this year are facing more severe conditions than last year, largely due to degradation of shrimp germplasm, shrimp quality is even more poor. According to estimates from the insiders, in the first half of this year, the rapid emergence of shrimp ponds after the stocking of Datang, Guangdong, Hainan, Fujian, Guangxi, more than 60% of the ponds had to drain the entire pond, re-seedlings, Jiangsu, Zhejiang and Shanghai began to appear a lot Row of pond phenomenon. The combination of last year’s shrimp stocking situation, the industry has reflected: Since the introduction of P. vannamei, vigorous support for four or five years, the problem of germplasm degradation is more serious. If the germplasm problem can not be completely solved, shrimp farming will not be as shrimp and spotted shrimp farming that peak from the peak trough?