云南省主要桑品种饲养原蚕的对比试验

Comparative Test of Original Silkworms Rearing with Main Mulberry Varieties in Yunnan Province

[目的]通过对引进的几个桑品种的原蚕饲育成绩进行了初步调查,研究云南省主要桑树品种对原蚕饲育成绩的影响。[方法]用不同桑品种在相同饲育条件下分别饲养原蚕,测定调查龄期经过、蛹期经过、全茧量、茧层量、茧层率、幼虫生命率、虫蛹统一生命率、死笼率、单蛾产卵数、单蛾良卵数、良卵率等指标。[结果]蚕期发育经过及幼虫生命率、虫蛹统一生命率等无显著差异;但死笼率盛东1号较高,育71-1较低的倾向。春期用育71-1的桑叶饲育原蚕的全茧量、茧层量均高于对照,茧层率略高于对照。[结论]春期原蚕繁育用桑适宜选择的桑品种依次为育71-1、农桑14号、湖桑32号、盛东1号;秋期原蚕繁育用桑适宜选择的桑品种依次为湖桑32号、育71-1、农桑14号、盛东1号。

[Objective] To investigate and analyze the rearing performance of original silkworms with several mulberry varieties which were introduced by our institute.[Method] The silkworms were reared with different varieties of mulberry under the same conditions.Their larval duration,pupal duration,whole cocoon weight,cocoon layer weight,cocoon layer ratio,survival rate of larva,dead worm cocoons ratio,spawning,good eggs per moth,etc.were investigated.[Result] There were no significant differences among the duration of larval,the survival rate of larva and the survival rate of pupa;but the dead worm cocoons ratio was higher with the mulberry varieties of Shengdong 1 to rear the silkworms,and lower with the mulberry varieties of Yu 71-1.The whole cocoon weight,cocoon layer weight and cocoon layer ratio of Yu 71-1 were also higher than control.[Conclusion] The suitable mulberry varieties to rear spring silkworms were in order as follows： Yu 71-1,Nongsang 14,Husang 32,Shengdong 1,and the varieties to rear autumn silkworms were Husang 32,Yu 71-1,Nongsang 14,Shengdong 1.