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通过中国系统二化性品种间杂交,筛选出中×中杂交原种,定名为“云蚕1”;又用日本系统品种间杂交育种,筛选出日×日杂交原种,定名为“云蚕2”.云蚕1×云蚕2的正反交具有卵形大,卵化齐,眠性快,食桑旺,蚕体大,抗性强,容易饲养等优点;在经济性状上具有茧型大,茧层率高,茧丝长,解舒易,净度好,丝质优的特点。这个四元杂交新组合经不同季别、不同海拔多点试养,结果证明适合云南春秋兼用,经济效益好,己在全省推广.
Through the crossbreeding of the two Chinese varieties, the medium × medium hybrid was screened and named as “Silkworm 1”. In addition, the Japanese × Japanese hybrids were screened by crossbreeding between Japanese varieties and named as “ 2 ”.The reciprocal cross of the silkworm 1 × cloud silkworm 2 has the advantages of large oval, oviposition, fast dormancy, fasting mulberry silkworm, large silkworm body, strong resistance and easy feeding and so on; Large, cocoon shell rate, long cocoon, Xie Shu easy, good clarity, excellent silk quality. The new quadruple hybrid combination of different seasons, different elevation test, the results prove suitable for both spring and autumn in Yunnan, good economic returns, has been in the province to promote.