论文部分内容阅读
1972年,广东省河源县各蜂场普遍发生中蜂囊状幼虫病,使全县的中蜂从45,361群,下降为12,830群,给养蜂生产造成了严重损失。起初,他们仅从药物治疗入手,虽然取得一定效果,但仍不能控制蜂群大量死亡。1973年蜂群越夏之后,县土产公司发动全县1,000多个养蜂员,大搞中蜂抗病育种的群众运动。经过两年多的实践,在全县范围内选育出了一个比较抗囊状幼虫病的中蜂品系,使全县的蜂群从12,000多群,迅速恢复到3万多群。蜂蜜的收购量,由1973年的2,100担,增至1975年的7,000—8,000担。他们选育抗病品系的具体作法如下:
In 1972, the bee larval cyst was widespread in each of the beehive farms in Heyuan County of Guangdong Province, causing the bee population in the county to decline from 45,361 to 12,830, causing serious losses to beekeeping production. Initially, they started with medication alone, and although they did have some effect, they were still unable to control large numbers of deaths in bee swarms. After the summer swarm became more popular in 1973, the county-level property company launched more than 1,000 bee-bearers throughout the county to promote the mass movement of bumble bees. After more than two years of practice, we have bred a bee-bee strain that is more resistant to cystic larval disease within the county, enabling the bee population in the county to quickly recover from more than 12,000 to more than 30,000. The purchase of honey increased from 2,100 in 1973 to 7,000-8,000 in 1975. The specific practices of breeding resistant strains are as follows: