Studies on the Distribution Law of Pebrine Within Batches of Parent Silkworm Rearing

In this paper,the pebrine infection of mother moth from 4 927 farmers of 478 batches in parent silkworm rearing area was made statistical analysis.The research results showed that the pebrine infection was correlation between the different farmers in parent silkworm rearing areas,but not all correlative,whose distribution were neither random within batch and nor independent each other between different batches in silkworm eggs production farm So we think that it is necessary drawing up the pebrine inspection standards and sampling scheme for the parent silkworm rearing area.