青草直接喂鱼,其利用率低,如果将青草先打成草浆然后再喂鱼,其营养利用率可提高50%以上,而且还可起到投饵和施肥双重作用。其原因是:草浆中有很多与浮游生物大小相同的颗粒,可供滤食和杂食性鱼类利用。而较大的碎片,则被草鱼、鳊鱼、团头鲂等草食性鱼类摄食。未被鱼类摄食的草? Grass feed directly to the fish, its utilization rate is low, if the grass first labeled straw and then feed the fish, the nutritional utilization rate can be increased by 50%, but also play a dual role of feeding and fertilization. The reason for this is that there are many particles in the straw that are of the same size as plankton and can be used by both filter feeders and omnivorous fish. Larger fragments, however, are consumed by herbivorous fish such as grass carp, bighead carp and bighead carp. Grass that is not consumed by fish?