(一)合理调整水位蟹池的水位一般以平台的地方为准,控制在0.8米左右,蟹池四周沟槽的水位有可能保持在1.5米左右。经过长时间的饲养,蟹池水质变老、变肥,对河蟹生长不利,因此要定期加注新水,以改善池塘水质。初夏每10～15天加水1次,每次加水20%;6-9月份每周加水1次,每次加水30%～40%。(二)控制水色与透明度蟹池中水体的颜色是生产中常用的辨别水质好坏的指标之一。通常 (A) a reasonable level of water crab pool water level to the platform generally prevail, control at 0.8 meters around the crab pool around the groove may be maintained at about 1.5 meters. After a long period of feeding, crab pool water quality becomes old, become fat, detrimental to the growth of crabs, it is necessary to regularly add new water to improve pond water quality. In the early summer, water is added every 10 to 15 days for one time, each adding 20% ​​of water; and 6 to 9 times of weekly adding water for 30 to 40% each time. (B) control of color and transparency Crab pool water color is commonly used in production to identify one of the indicators of water quality. usually