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Fiber damage of machine-harvested cotton before ginning and after lint cleaning

Journal of Integrative Agriculture 2018年第5期17卷 1120-1127页

作者： TIAN Jing-shan ZHANG Xu-yi ZHANG Wang-feng LI Jian-feng YANG Yan-long DONG Heng-yi JIU Xing-li YU Yong-chuan ZHAO Zhan XU Shou-zhen ZUO Wen-qing Key Laboratory of Oasis Eco-Agriculture Xinjiang Production and Construction Corps/College of AgronomyShihezi University regimental farm 149 Division EightXinjiang Production and Construction Corps regimental farm 133 Division EightXinjiang Production and Construction Corps regimental farm 12 Division OneXinjiang Production and Construction Corps

Machine harvesting increases the foreign matter content of seed cotton. Excessive cleaning causes fiber damage and economic loss. Most trading companies in the Xinjiang Uygur Autonomous Region, China have indicated reluctance to use machine-harvested cotton. The first objective was to determine how the fiber quality was affected by the ginning and lint cleaning and how the fiber damage during levels of lint cleaning changed. The second objective was to determine the optimum number of lint cleaners for machine-harvested cotton based on fiber damage. Cotton samples were collected from 13 fields and processed in seven ginneries between 2013 and 2015. The results indicated that ginning and lint cleaning didn＇t have significant effect on fiber strength and significantly affected both fiber length and short fiber index. Fiber length was reduced by more than 1.00 mm from six of 13 fields after lint cleaning, then the damage rate on short fiber index from 11 of 13 fields was more than 20%. The third lint cleaning caused great fiber damage, reducing fiber length by 0.35 mm and increasing short fiber index by 0.65%. So, the lint should be cleaned by one lint cleaner in the Xinjiang, however, the stage of lint cleaning was sometimes omitted when the foreign matter content of lint was little.

关键词： Xinjiang machine-harvested cotton lint cleaning foreign matter

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