【摘要】 对陕西蚕桑丝绸所保育的７２个家蚕品种的丝质性状调查表明，粒茧丝长中系＞日系＞欧系＞地方品种，其平均丝长９５４ｍ，最长１２５３ｍ，最短４３９ｍ；平均解舒丝长５８５ｍ，最长８７１ｍ，最短２２９ｍ，解舒率平均值为６１．２％，解舒率欧系＞地方品种＞日系＞中系。７１个品种的茧丝量表现为中系＞日系＞欧系＞地方品种；４个系统茧丝纤度表现为日系＞中系＞欧系＞地方品种。５０个品种的茧丝净度平均９３．９分，最高９７分，最低８７．５分。就系统而言，日系品种最好，中系品种次之，欧系品种较差。更多还原

【Abstract】 For length of silk, the average is 954 m,the longest is 1 253 m, the shortest is 439 m and Chinese races >Japanese races >Europen races >Shaanxi local races; for length of nonbroken cocoon filament, the average is 585 m, the longest is 871 m, the shortest is 229 m; for relability percentage, the average is 61.2%, the best is 83.8%, the worst is 30.6% and Europen races> Shaanxi local races>Japanese races>Chinese races. Above results came from 72 varieties investigated in Shaanxi. For 71 varieties, the average weight of cocoon filament is 0.249 g, the heaviest is 0.316 g, the lightest is 0.107 g, Chinese races> Japanese races> Europen races > Shaanxi local races; the average cocoon filament size is 2.359 D, the coarse size is 3.065 D, the fine size is 1.790 D, Japanese races> Chinese races> Europen races> Shaanxi local races. The average neatness is 93.9 point, the best is 97 fen, the worst is 87.5 fen and Japanese races> Chinese races> Europen races.\;更多还原