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养虾的重点在于预防虾病。而虾病的预防又取决于日常观察。通过对池水透明度、水色、虾体外观及其活动状态的细心观察,发现异常,及时采取对策,可有效预防虾病的发生,把握虾病防治的主动权。1观察透明度养虾期间,池水的透明度一般应控制在30—40cm。当透明度低于30cm,应停止施肥,并适量换水;当透明度高于40cm时,说明浮游生物太少,应适当施肥。
Shrimp focus is to prevent shrimp disease. The prevention of shrimp disease in turn depends on the daily observation. Through careful observation of water transparency, water color and body appearance of shrimp and their activity status, we found abnormalities and adopted timely countermeasures, which can effectively prevent the occurrence of shrimp diseases and take the initiative to prevent and control shrimp diseases. 1 Observation of transparency During shrimp culture, water transparency should generally be controlled at 30-40cm. When the transparency is less than 30cm, fertilization should be stopped, and the amount of water change; when the transparency is higher than 40cm, the plankton too little, fertilization should be appropriate.