摘要
随温度降低纤维伸长最大值降低 ,伸长期延长 ;夜间温度对纤维伸长的影响大于日均温。纤维断裂比强度随铃龄增大而升高 ;相同铃龄随温度下降断裂比强度降低。随纤维发育 ,纤维成熟度升高 ;随温度降低 ,成熟度随铃龄增大增幅降低 ,相同铃龄随温度下降成熟度值呈下降趋势。细度随纤维发育逐渐减小 ,全铃期夜均温 16 7℃和≥ 15℃有效积温 1142 9℃是细度变化临界点 ,低于该温度时细度随纤维发育降低缓慢 ;相同铃龄随温度下降呈升高趋势。
With temperature decrease,maximum fibre elongation of cotton decreased and elongation period increased.Night temperature showed larger influence on fibre elongation than daily average temperature.While fibre break strength was increased with cotton boll age,it was reduced when temperature dropped.Fibre maturity was increased as fibre developed and the rate of increase decreased with boll age.Fibre fineness decreased with fibre development.Daily average temperature of 16 7 ℃ and cummulated temperature of 1142 9 ℃(≥15 ℃) are the critical points of fibre fineness.Fineness decrease rate was reduced when temperature was below this temperature.At the same boll age,fineness increased when temperature was decreased.
出处
《华北农学报》
CSCD
北大核心
2000年第4期120-125,共6页
Acta Agriculturae Boreali-Sinica
