Analysis Of Current Status And Influencing Factors Of The Cotton Fiber Quality In The First Agricultural Division

In this paper,combined with a division of the quality of cotton,from cotton varieties,picking technology and Verticillium Wilt of cotton three aspects of analysis and study of the influence on the quality of cotton fiber,main research results are as follows:(1)the development of cotton production and the status of cotton fiber qualityA division of cotton planting area and yield showed increasing trend,maintain high yield and fiber quality of cotton and no corresponding increase.Cotton fiber quality index and in the division of the prefectures and the cotton fiber quality overall level in the backward position compared to,compared with the domestic and the average of Xinjiang,each index values were lower than the average level.Among them,2013 and 2015 annual average length is 27 mm below Xinjiang and domestic 28 mm level,2014 annual average length for 28.65 mm.Despite the increase,but still lower than the country,in the same year average;cotton fiber breaking strength ratio Average values for the26.68 c N/tex below 27.61 c N/tex Xinjiang average value of and the national average of 2.796 tex;cotton fiber micronaire value mainly distributes in a grade C in the year 2013,cotton fiber maturity degree far behind in the country,Xinjiang cotton fiber maturity status.A division of cotton quality problems is not optimistic.(2)the influence of cotton planting varieties on the quality of cotton fiberA division of the cultivated varieties are many and complex,unstable plant varieties,extensive plantings and the quantity is little,planting varieties and harvesting way does not match the problem,resulting in difficult to improve the fiber quality of cotton.Currently a division of planting area is the largest varieties CCRI 49,Xinluzhong 37 and Xinlu 28,by of the three varieties of test samples,Xinluzhong 37,Xinluzhong 28 in length index higher than Zhongmiansuo 49 one to two levels,fracture than the strength difference is not big,maturity relatively good for now a division of planting varieties,it is recommended of Xinluzhong 37,Xinluzhong 28 to be improved to promote.(3)cotton picking technology on the quality of cotton fiberComparative analysis of the division of a hand picked cotton and cotton picking on the quality index of difference,machine pick up cotton body length 27 mm,28mm scale lengths also accounted for a considerable proportion,and hand picked cotton body length up to 28 mm level and 29 mm level accounted for a certain proportion,machine picked cotton and hand picking cotton in terms of length difference 1-2 grades.Machine pick up cotton fracture than the strength can reach only 0.9%percentage of more than 29.0c N/tex,hand picked cotton fracture than strength in more than 30.9c N/tex reached 10%,from the whole pull bottom a division of cotton fiber quality,and vigorously develop the machinery picking is still a division and the country can not be The trend of the reverse,it is recommended that a division will be a scientific and effective combination of artificial and mechanical picking,the overall improvement of the quality of a division of cotton and picking efficiency.(4)the occurrence and effects of Cotton Verticillium Wilt on cotton fiber qualityCotton infected Verticillium Wilt of cotton yield and fiber quality traits influence,the overall performance of the increasingly heavy cotton disease severity,the cotton fiber quality worse.Studies have shown that with Verticillium index increased,Zhongmian 35 cotton fiber micronaire value showed a trend of first increased and then decreased,fiber specific strength,length,uniformity with the increase of incidence level gradually decreased.Correlation and regression analysis showed that Zhongmian 35 Verticillium level and the cotton fiber length,fracture than the strength of the correlation reached a significant level,and the horse cloning,maturity,neat index was not significantly correlated.Infection Xinlu to Verticillium Wilt in 37 and Xinluzhong 28 Cotton fiber length,fracture than strength and micronaire values were lower than that in the healthy cotton plant,the influence of Xinluzhong 37 yield less than Xinluzhong 28.Show that the influence of Verticillium Wilt of cotton yield and fiber quality of cotton varieties was also different between.