棉花脱叶催熟剂对纤维品质的影响及应用时间的确定

田景山, 张煦怡, 王文敏, 杨延龙, 随龙龙, 张鹏鹏, 张亚黎, 张旺锋, 勾玲

A method of defoliant application based on fiber damage and boll growth period of machine-harvested cotton

Jing-Shan TIAN, Xu-Yi ZHANG, Wen-Min WANG, Yan-Long YANG, Long-Long SUI, Peng-Peng ZHANG, Ya-Li ZHANG, Wang-Feng ZHANG, Ling GOU

表3 生产30 cN tex^-1和31 cN tex^-1纤维比强度所需要的铃体积、铃直径、铃长度、铃期和脱叶催熟剂喷施时的棉铃铃龄与铃期的比值(R_d/b)及脱叶催熟剂的喷施时间

Table 3 Description of boll volume, boll length, boll diameter, boll growth period, the ratio divided defoliation time by boll growth period and fiber damage (R_d/b) and defoliant application times for producing >30 and 31 cN tex^-1 fiber strength

性状 Trait		生产纤维比强度>31 cN tex^-1要求的参数 Values for producing >30 cN tex^-1fiber strength	生产纤维比强度>30 cN tex^-1要求的参数 Values for producing >30 cN tex^-1 fiber strength
铃体积Boll volume (cm³)		31.8	28.7
铃长度Boll length (mm)		49.7	47.4
铃直径Boll diameter (mm)		36.6	35.6
铃期Boll growth period (d)		60.0	56.8
比强度损伤 Fiber strength damage amount < 0.5 cN tex^-1	脱叶催熟剂喷施时的棉铃铃龄与铃期的比值(R_d/b) Ratio divided defoliation time by boll growth period (d/b)	0.68	0.68
比强度损伤 Fiber strength damage amount < 0.5 cN tex^-1	脱叶催熟剂喷施时间 Defoliant application time (d)	40.9	38.7
比强度损伤 Fiber strength damage amount < 0 cN tex^-1	脱叶催熟剂喷施时的棉铃铃龄与铃期的比值(R_d/b) Ratio divided defoliation time by boll growth period (d/b)	0.72	0.68
比强度损伤 Fiber strength damage amount < 0 cN tex^-1	脱叶催熟剂喷施时间 Defoliant application time (d)	43.3	41.0