【作者】 周桂生；

【导师】 封超年；

【作者基本信息】 扬州大学 ， 作物栽培学与耕作学， 2006， 博士

【摘要】 本文在分析棉纤维品质的现状及主要存在问题、纤维品质的可调性、产量与纤维品质、关键栽培技术与纤维品质、区域温光因子和纤维品质、棉纤维品质形成、内源激素诱导及源库关系和纤维品质的基础上,通过2003-2004年试验,观察了高品质棉陆地棉渝棉1号和科棉1号的纤维发育及品质形成特点,研究了关键栽培技术如密度、氮磷钾配比和缩节安化控等对高品质棉科棉1号纤维品质的调节效应,分析了氮磷钾配比对伏前桃、伏桃、早秋桃和晚秋桃纤维品质形成的影响,探讨了氮磷钾配比影响纤维品质形成的生理机制,比较了江苏不同生态区温、光因子对纤维品质的影响效应,提出了高品质棉纤维品质调优的关键栽培技术。1.以一般品质棉花品种苏棉16为对照,研究了高品质棉渝棉1号、高品质Bt棉科棉1号的纤维品质形成特点及内源激素的诱导。结果表明,与苏棉16相比,科棉1号和渝棉1号纤维快速伸长期略长,快速伸长期内的日增长速率较高;比强度快速增长期较短,但在快速增长期内的日增长速率较高;科棉1号较早进入单位长度纤维重量快速增重期,在快速增重前期的增重速率较高,在快速增重后期的增重速率较低,渝棉1号在整个快速增重期内的增重速率较高;纤维素含量随着花后更多还原

【Abstract】 Based on the systematic analyses of the current situations and the main problems of cotton fiber quality in China, the significance of developing high-quality cotton production, the feasibility of optimizing cotton fiber quality, the effects of main cultivating measures and meteorological factors on cotton fiber quality, the differentiation and development of cotton fiber as well as the induction of plant hormones on fiber development, the experiments carried out in crop year 2003 and 2004 mainly observed the characteristics of fiber quality development in high quality upland cotton (G. hirsutum L) Yumian 1 and Kemian 1, investigated the effects of different cultivating measures (planting density, the ratio of N:P2O5:K2O, and mepiquat chemical regulation) on cotton fiber quality, studied the effects of N:P2O5:K2O on fiber quality development, discussed the relationship between physiological characteristics in subtending leaves, boll walls as well as fiber and cotton fiber development, analyzed the effects of heat and light factors in different latitudes in Jiangsu province on cotton fiber quality. The main results were as follows.1. With Sumian 16 (conventional cotton, average fiber quality) as the control, the characteristics of fiber quality development and endogenous hormones in high quality cotton (G. hirsutum L.) Kemian 1 (Bt. transgenic cotton, high fiber quality) and Yumian 1 (conventional cotton, high fiber quality) were studied. Compared with Sumian 16, rapid更多还原