“要养好一池蟹,先种好一池草”,这一点已为蟹区养殖户所共知。但是在河蟹养殖生产中却往往很难种好水草,究其原因有以下两个方面:一是品种不对路,表现为水草净化水质的作用差或该品种水草的再生能力弱,造成生长不良或很快被河蟹吃光;二是管理不善,使种植的水草生长不良或很快? “To keep a pool of crabs, a good kind of pool grass,” which has been known to crab farmers. However, it is often difficult to grow aquatic plants in the production of crab farming. There are two reasons for this: one is the breach of species, the poor water quality of aquatic plants or the weak regeneration ability of aquatic plants, resulting in poor growth or Quickly eaten by crabs; second, poor management, poor growth of planted plants or quickly?