四川蚕茧质量地区差异研究

[目的]研究蚕茧质量与地区环境之间的关系。[方法]以蚕品种菁松×皓月为试材，在四川省选择有代表性的10个基点作为试点，对各试验点测试和调查了22项蚕茧质量指标，研究蚕茧质量的地区差异。[结果]以解舒率为例，10个试点之间存在很大差异，地区7的解舒率最高，达76．2％，而地区9最低，仅54．5％。剖析表明，地区7气候干湿分明、气候凉爽、日温差大等优势地理环境造就该地区蚕茧的解舒丝长，蚕茧质量好，评为3级，而地区9由于气候湿度较大，茧丝塌压，解舒性差，解舒丝短，基本等级为14级，还因气候等原因茧生霉，内霉茧率高达17．50％，使得最终等级降到17级。[结论]蚕茧质量的好坏与地区间的地理环境有很大的关系。

Analysis on Investigation of Area Difference on Cocoon Quality

[Objective] The purpose was to study the relationship between the cocoon quality and area environment.[Method] With silkworm variety Qingsong × Haoyue as tested material,10 representative base points in Sichuan Province were selected as the tested sites to detect and investigate 22 indices of cocoon quality in each area and study the area difference on cocoon quality.[Result] With reelability percentage as the example,there was a great deference among 10 tested sites.The reelability percentage in area 7 was highest,being 76.2%,while that in area 9 was lowest,being only 54.5%.Analysis showed that,the area 7 had dominance geography environment such as clear dry and humid weather,cool weather and great daily temperature difference,which caused the long non-broken cocoon silk and the good cocoon quality that judged as 3 grade in this area,while the greater weather humid in the area 9 made cocoon silk collapse,poor reelability,short non-broken cocoon silk and the basic grade of cocoon was judged as 14 grade,special the final grade decreased to grade 17 because of weather that caused the cocoon to mildew with the inner mildew cocoon rate of 17.50%.[Conclusion] The cocoon quality had great relationship with geography environment among different areas.