夏播短季栽培模式下棉花产量及纤维品质对脱叶催熟剂喷施时间的响应

谢章书, 荣志凌, 覃业玲, 李侃, 周仲华, 屠小菊, 汪启明, 刘爱玉

Response of Cotton Yield and Fiber Quality to the Timing of Defoliant Spraying under Summer-Sown Short-Season Cultivation Pattern

Xie Zhangshu, Rong Zhiling, Qin Yeling, Li Kan, Zhou Zhonghua, Tu Xiaoju, Wang Qiming, Liu Aiyu

表1 脱叶剂喷施时间对纤维品质的影响

Table 1 Effects of defoliant spraying time on fiber quality

喷施日期（月-日） Application date (month-day) 上半部平均长度 Average length of upper half (mm) 整齐度指数 Uniformity index (%) 断裂比强度 Fiber strength (cN/tex) 马克隆值 Micronaire value 伸长率 Elongation rate (%) 10-03 30.40±0.36a 84.60±0.29b 33.47±0.24a 4.46±0.12b 5.0±0.1a 10-06 30.43±0.43a 84.73±0.35b 33.50±0.69a 4.60±0.09b 5.0±0.1a 10-09 30.50±0.45a 85.20±0.20a 33.90±0.24a 4.83±0.09ab 5.0±0.1a 10-12 30.76±0.55a 85.30±0.31a 34.03±0.17a 4.90±0.12ab 5.1±0.1a 10-15 31.10±0.40a 85.67±0.42a 34.83±1.15a 5.16±0.06a 5.1±0.1a