鱼苗细小又多如毫毛,过数是一项比较复杂的工作。但过数又很重要,无论在育苗销售、计算运输密度、计算成活率都要求过数。现介绍一种简便的计数方法：过数前先测知一个鱼桶能装多少盆水,一盆能装多少碗水,一碗能装多少杯水,然后在已知容量的鱼桶里放入育苗,使育苗均匀分布,取几杯水计算育苗数,求出 Fry small and numerous, such as hairy, the number is a more complicated work. However, the number is very important, no matter in seedling sales, calculate the transport density, calculate the survival rate are required. Is now introduced a simple counting method: the first few measured before a fish tank can hold how much pots, pots can hold how much bowl of water, how many cups can hold a bowl of water, and then placed in a bucket of known capacity Into nursery stock, so nursery uniform distribution, take a few cups of water to calculate the number of nursery, calculate