【摘要】 采用杂交育种结合系谱选择方法育成了强健性多丝量品种871、872，通过1993～1994两年攻关点联合鉴定及全国桑蚕品种鉴定，结果表明；万蚕收茧量、万蚕茧层量、万蚕产丝量分别比对照种提高11％～15％、11％～18％、15％，茧丝长1200～1400m，出丝率17．42％～20．68％，净度94～96分，是一对体质较强，丝质优良兼耐氟化物污染，繁育性能较好的优质春、秋兼用多丝量蚕品种。更多还原

【Abstract】 871 and 872, healthy and hypersilkgeneous silkworm races were berd out through cross breeding combined with pedigree selection. From 1993 to 1994, their hybrid wasidentified jointly nationwide and appraised by National Mulberry and Silkworm Apprising Committee. Results showed that its cocoon crop, cocoon shell weight and raw silkweight per 10000 fourth instar silkworms is 11-15 %, 11-18 %, 15% higher respectively than those of the control race. Its length of cocoon filament is 1200-1400 metre,raw silk rate 14. 72-20. 68 %, neatness 94-96 marks. They are hypersilkgeneous silkworm races for both spring and autumn rearing with the characters of healthy physique,highcocoon yield, good silk quality, resistance to fluoride pollution and relatively good inmultiplication.更多还原