Abstract:

The multi-site plots were chosen on the Farms of Xinjiang, to compare the difference of fiber qualities between machine picking and hand picking, explicit the effect of cotton picker on cotton fiber qualities, to explore the strategy for improving cotton fiber. The results showed that there was a significant difference of machine picking on fiber quality. Fiber length and micronaire had no significant changes between machine picking and hand picking, and little changes in multi-site plots and varieties. Compared hand picked cotton, fiber strength, uniformity index and spinning consistency index decreased significantly. Especially, changes of fiber strength and spinning consistency index were lager, at less than 11.3 % and 25.8 % separately, and 62.5 % of varieties decreased significantly. Change of short fiber index was most significance among six fiber quality indicators, short fiber index of cotton picker increased 51 % than it of hand picking cotton, at more than 90 % and 130 % separately in multi-site plots and varieties. Therefore, to explore the changes of fiber quality on cotton picker, choosing suitable varieties and reasonable layout were main means for improving fiber quality.