花铃期遮荫对棉纤维品质的影响

摘要： 以中棉所1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0%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;0%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.

关键词: 棉花, 花铃期, 遮荫, 纤维品质

Abstract: The study on the effects of different shadinglevel at blossoming and boll-formingstages on cottonfiber quality ofZhongmiansuo No.41 and Lumianyan No.18 showed that withincreasing shading,the maxi mumfiber length ofcotton decreased,while the elongation period increased. The fiber length in 70 %shading treatment was 1.01mmshorter than that in 40 %shading treatment. Without shading,the fiber reached its maxi mumlength 25days after anthesis,while in shading treatments,the fiber reached its maxi mumlength 35 days after anthesis.Fiber gauge tenacity was also decreased with increasing shading. Comparing with the control,both 40 % and70 %shading significantly decreased the fiber maturation and maturity. Two test cotton varieties presented thesame change trend under shading condition.

Key words: 　Cotton, Blossing and boll-forming stages, Shading, Fiber Quality

中图分类号: 

S311

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