【作者】 王庆材； 宋宪亮； 王振林； 李玉静； 郭英； 孙学振；

【Author】 WANG Qingcai, SONG XIANliang, WANG Zhenlin, Li Yujing ,GUO YING ,,SUN Xuezhen (Agronomy college of Shandong Agricultural University, Shandong Taian 271018,China )

【机构】 山东农业大学农学院；

【摘要】 以中棉所41号和鲁棉研18号两个品种为试验材料,通过人工遮荫,设计3个遮荫水平(不遮荫,遮荫40％,遮荫70％),研究了花铃期不同程度遮荫对棉花纤维品质性状影响的变化规律。结果表明:遮荫使纤维长度变短,遮荫程度增加则变短幅度加大,70％遮荫处理的比40％遮荫处理的平均变短1．01mm,并且遮荫延缓纤维伸长期,CK在25天纤维达最大长度,而遮荫后35 天才到达最大长度。遮荫降低纤维断裂比强度,且随遮荫程度增加,纤维断裂比强度降低幅度增大; 40%和70％遮荫处理都使纤维麦克隆值和成熟度下降,与CK均达极显著差异水平。遮荫对两个供试品种纤维品质性状的影响变化趋势一致。更多还原

【Abstract】 The effect of different shading level on cotton fibre qulity of Zhongmiansuo No.41 and Lumianyan No.18 in blossoming and boll-forming stages was evaluated. We designed three shading levels: no-shading(CK),40% shading and 70% shading.The results showed that with the shade increasing, the maximum fiber length of cotton decreased and elongation period increased. Fibre length of 70% shading treatment is 1.01mm shorter man that of 40% shading treatment .Fibre reaches it’s maximum length 25 days after anthesis without shading, while fibre of two shading treatments reach it’s maximum length 35 days after anthesis . Fibre gauge tenacity was also decreased as the shading increasing ,and it s rate was increased when sunlight dropped . Fibre maturation and fibre maturity were increased as fibre developed and the increase rate decreased with the boll age .Both 40% shading and 70% shading treatment decreased the fibre maturation and fibre maturity, which were significantly different from that of CK. The rate was increased when the sunlight decrease rate went down ;A11 the indexes were not changed when we only changed the kind of variety.更多还原