Elementary Study On Ecological Distributing Law Of Cotton Fiber Quanlity In Xinjiang

It is well provided with producing varieties of cotton fiber where it has abound temperature and light resource in Xinjiang. The research aimed at well quality on cotton fiber, but the question that type of variety was singleness, difficultly to satisfy market diversification demand, so developing research on the relation between cotton fiber quality and the climate zoology factor of temperature and light as well as the regularities of distribution in cotton fiber quality zoology, it has importance significance to achieve highly active and persistent development in Xinjiang The examination chose south and north in Xinijiang grow area greater,character of cotton fiber quality representation, during 2003~2004, The examination chose south and north in Xinijiang grow area greater,character of cotton fiber quality representation, during 2003~2004, Based on the experiment e with three sowing-date and the experiment of confederated in 23 site .The character of cotton fiber quanlity and The law of the ecological distribution in different light and temperature were analyzed.Based on the analysis,the elementary zonal measure off on high quality of cotton growing site in Xinjiang was established.The primary conclusion as follows:1.The Changes of Fiber Quality at Different Cotton Varieties and Correlation with Meteorological FactorsThe research showed that in common use of cotton fiber index under the climate facter of north xinjiang , the different fiber quality character has the different controlled factors. Fiber length, fiber uniformity and fiber elongation rate were most influenced by the hereditary trait of variety. Fiber strength and micronaire value was effected not only by the hereditary trait of variety but also effected remarkably by meteorological factors. As far as the meteorological factors are concerned, the main meteorological factors which effected the different fiber quality characters are not same. Fiber length and fiber elongation rate was effected mainly by the total sunshine time of cotton boll stage. Fiber uniformity and fiber strength is effected mainly by activity accumulated temperature (≥15℃) of cotton boll stage. Micronaire value was mostly influenced by the highest temperature of cotton boll stage.2 The relation of cotton fiber quality with the meteorological factors and the ecological distribution regulation of quality. The index of fiber quality and meteorological factors during boll stage were curve estimated. The result showed that the fiber length and fiber elongation rate were mostly influenced by the temperature and the relative humidity, and had the relation of quadratic function with the temperature and the relative humidity. When the temperature was 24℃～26℃and the relative humidity was 45%～47%, the fiber length and fiber elongation rate appeared high level, and the fiber length was the shortest when the temperature was about 30℃. Fiber strength and Micronaire value were mostly influenced by the temperature, the hour of sunlight and the relative humidity. Fiber strength had the monadic linear direct ratio relationship with the temperature and the hour of sunlight; had quadratic function relationship with the relative humidity, and when the relative humidity got to 54% or so the fiber strength was the lowest. The Micronaire value had the quadratic function relationship with the temperature and the relative humidity, the monadic linear direct ratio relationship with the hour of sunlight. Micronaire value reached A class and B class when the temperature was 24℃～26℃. With the meteorological resource of each ecological cotton area, we plotted the Xinjing cotton area aptly planting superior cotton primarily, according to the change of fiber quality of different variety in 23 experimental units and cluster analysis of meteorological factor in each area.As the base of produce long-fiber cotton, Tulufan basin of east of Xinjing had the high temperature during the stage of Upland cotton boll developed. The average temperature was about 32℃,during the boll stage, the time of sunlight were about 12h, the relative humidity was 35% or so. The characters of premature Upland cotton acted lower length, uniformity and elongation; higher strength and Micronaire value,which did not good for the development of middle-long-fiber cotton, so in these area we had to plant special high-strenth cotton to spin inferior yarn.Maigaiti,Shufu, Bachu of Yerqiang valley and Kashiger valley in the south of Xinjing, the average temperature of boll stage was 25℃～26℃, the time of sunlight were 10h～14h, the relative humidity was 40%～58%, it benefited for the form of advanced quality fiber. Fiber strength, fiber length, fiber uniformity and fiber elongation rate were all high. The Micronaire value belonged to A class and B class and the fiber synthetic quality were superior. So in these areas we could plant middle and long fiber Upland cotton for weaving high quality yarn, and with suitable variety we could supply high grade cotton for spin enterprise.The latitude were similarity and situated in the same oasis agricultural zone along north area of Tianshan mountain in the north of Xinjiang included Mana-si valley, Kuitun valley and Boer-ta-la valley. In these areas the average temperature of boll stage was 24℃～ 25℃, the time of sunlight were 8h～13h, the relative humidity was 48%～58% and the synthetic index of quality manifested very well if plant premature variety . The length of fiber was more longer and the Micronaire value belonged to A class and B class. Fiber strength, fiber uniformity, fiber elongation rate and so on were mediocre, but the fiber synthetic quality were preferably and the quality of the same variety kept well, they benefited for weave secondary and advanced yarn, and benefited for set up industrialization productive base in which we could plant high strength, middle, long fiber and premature Upland cotton and plant low strength, middle fiber Upland cotton.All indexes of variety were analysed. We could see that though individual variety had their superiority, they matched badly with eath other from Weigan valley,Tali-mu valley,kuche valley of the fringes of Tali-mu basin in the south of Xinjiang to Yili valley in the north of Xinjiang and Hami basin. So we could select all kinds of variety which individual index was exerted filly, and we could supply all kinds of production in these areas.The fiber length of all kinds of variety planted in akusu valley of the south of Xinjiang and peacock river drainage area were all shorter, and all sorts of indexes of fiber quality were all very poor each other, then it was not for the benefit of superior cotton, so we consider those areas as special short fiber cotton areas to weave low quality fiber.