广西大棚养蚕试验初报

Preliminary report on the technique of silkworm rearing in greenhouse in Guangxi

采取1-4龄蚕室育、5龄大棚育的饲养方式，以两广二号为供试蚕品种，研究广西大棚省力化养蚕技术。试验结果表明．大棚片叶育、大棚条桑育及蚕室片叶育3种饲养方式的公斤茧粒数、全茧量、茧层量、茧层率指标之间存在显著差异，大棚条桑育显著优于蚕室片叶育；与蚕室片叶育相比，大棚片叶育节省12．9％的时间，大棚条桑育节省64．5％的时间。对大棚顶上铺设黑白膜并测定了铺设黑白膜前后大棚内外的温度变化，发现铺设黑白膜可以起到日中降温、夜晚保温的作用。

The labor-saving technique of silkworm rearing in greenhouse was studied by rearing Liang Guang silkworm II in room for 1-4 instars, and in greenhouse for 5 instars. The results showed that there were significant differences of cocoon quantity per kilogram, cocoon weight, cocoon shell weight and cocoon shell rate among the three different silkworm rearing methods, and the indices of shoot rearing in greenhouse were superior to that of leaf rearing in room. Besides, the leaf and shoot rearing in greenhouse could save time 12.9% and 64.5% in comparison with leaf rearing in room, respectively. To lower the temperature, we laid the black-and-white film upon the greenhouse, and the temperature variation inside and outside the greenhouse indicated that the film could lower the temperature in day and keep the temperature in night.