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在柞蚕生产上应用杂交种,是一项经济、有效的增产措施。实践证明,放养柞蚕杂交子一代和子二代比放养纯种增产20％左右,最高达30～40％。目前,在柞蚕生产上一般采用春季杂交制种放养子一代,秋季继续放养子二代。此法简单易行,既有利于春蚕丰产,又能保证秋蚕用种,同时秋蚕的增产效果与春蚕基本一致。有条件的地区,可春放一个杂交组合的二个亲本品种,秋季制种时进行杂交,其增产效果更为显著,但第二年
The application of hybrids in the production of tussah is an economical and effective stimulation measures. Practice has proved that stocking tussah hybrid generation and two generations of purebred than the stocking yield increased by about 20%, up to 30 to 40%. At present, the production of tussah is generally used in spring hybrid seed stocking generation, autumn continue to stocking two generations. This method is simple and easy, not only conducive to the high yield of spring silkworm, but also to ensure autumn silkworm use, at the same time autumn silkworm yield and spring silkworm basically the same. Conditions in the region, the spring can be a hybrid combination of two parental varieties, hybrids in autumn seed production, the yield is more pronounced, but the second year