花铃期遮荫对棉纤维品质的影响  

Effects of shading at blossoming and boll-forming stages on cotton fiber quality

作　　者：王庆材[1] 王振林[1] 宋宪亮[1] 李玉静[1] 郭英[1] 王建 孙学振[1] 

机构地区：[1]山东农业大学农学院,泰安271018 [2]山东省淄博市淄川区农业技术推广中心,淄博255100

出　　处：《应用生态学报》2005年第8期1465-1468,共4页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(30260051);山东省农业良种产业化开发资助项目(2004113).

摘　　要：以中棉所41号和鲁棉研18号为试验材料,研究花铃期不同程度遮荫对棉花纤维品质性状的影响.结果表明,遮荫使最终纤维长度变短,且变短幅度随遮荫程度增加而加大,70%遮荫处理比40%遮荫处理平均变短1.01mm;遮荫延缓纤维伸长期,CK纤维25d达到最大长度,而遮荫后35d达到最大长度;遮荫降低纤维断裂比强度,且降低幅度随遮荫程度增加而增大;40%和70%遮荫处理都使纤维麦克隆值和成熟度显著下降.两个供试品种纤维品质性状在遮荫条件下变化趋势一致.The study on the effects of different shading level at blossoming and boll-forming stages on cotton fiber quality of Zhongmiansuo No. 41 and Lumianyan No. 18 showed that with increasing shading, the maximum fiber length of cotton decreased, while the elongation period increased. The fiber length in 70% shading treatment was 1.01mm shorter than that in 40% shading treatment. Without shading, the fiber reached its maximum length 25 days after anthesis, while in shading treatments, the fiber reached its maximum length 35 days after anthesis. Fiber gauge tenacity was also decreased with increasing shading. Comparing with the control, both 40 % and 70 % shading significantly decreased the fiber maturation and maturity. Two test cotton varieties presented the same change trend under shading condition.

关 键 词：棉花 花铃期 遮荫 纤维品质 

分 类 号：S562[农业科学—作物学]