引进家蚕品种的对比鉴定试验

Varieties Test on Two Hybrids of the introduced Silkworm(Bomby × mori L.)

以菁松×皓月及其反交家蚕种为对照，对引进的两对家蚕新品种进行了对比鉴定试验．结果表明，引进种春蕾×镇珠及其反交在本地有较强的适应性，在许多方面，尤其在收茧量和茧层量上都优于对照种，其中万头蚁蚕收茧量增产１３％．万头蚁蚕茧层量增产１７％，克蚁产茧量增产６％克蚁茧层量增产１０％．全茧量增产１２％，茧层量１５％，茧层率３％，具有丰产性能好，经济效益高的特点，有大面积推广价值．

Two introduced varieties of silkworm(Bombyx mori L.)were tested with the QingShong×Haoyue and the reciprocal hybrid as contrasts.The results showed that the introduced varieties-Chunlei×Zhenzhu and its reciprocal hybrid had strong adaptability to the local environment.The introduced breeds were better than the contrasts in many aspects,especially on the yield of cocoon and the cocoon shell weight. The yield of cocoon and the cocoon shell weight per ten thousands newly hatched larvae was increased by 13% and 17%than the control aspectively.The yield of cocoon per gram of newly hatched larvae, the cocoon shell weight per gram of newly hatched larvae,the cocoon weight, the cocoon shell weight and the percentage of cotton shell weight were 6%,10%,12%,15% and 3% higher than the contrast respectively.The introduced breeds had the characters with high yield and high income.So the two breeds were valuable to be popularized in China.