用青草直接喂鱼,其营养利用率低。如果把草打成草浆再喂鱼,其营养利用率可提高50％以上,常用还可起到投饵和施肥的双重作用。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 Direct feeding of grass with grass, its low nutritional utilization. If the grass hurled straw fed fish, the nutritional utilization rate can be increased by 50% or more, commonly used can 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 the plankton and are available for both filter feeders and omnivorous fish, whereas