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Market Demand: Establishing And Perfecting The Color Level Database Of Cotton

2013/3/15 22:00:00 7

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Cotton Market Cotton Color Grade Cotton Grade Classification

the main problem of establishing and perfecting the color level data library of cotton 
 1. < a href= "http://www.91se91.com" > cotton > /a > wide range of planting. China's cotton planting area is very broad, mainly distributed in the Yangtze River valley cotton area, the the Yellow River River Basin cotton area, the northwest inland cotton area, the northern (especially early maturing) cotton area, the Southern China cotton area, the distribution of each cotton area from south to North has a great difference in temperature, and the precipitation from southeast to northwest gradually decreases, and its dry and wet climate is also very different. The division of the five major cotton regions is still in use so far, which fully reflects the characteristics of each cotton growing area, the different properties and advantages, disadvantages and characteristics of the cotton produced. 
 2. cotton varieties are numerous and miscellaneous. China's participation in the national regional trials has reached nearly 1000 new varieties, of which more than 1/3 have been recommended for production. These varieties can be classified into three types: medium mature cotton, Early Maturing Cotton and Early Maturing Cotton according to their growth stages. According to breeding methods, they can be classified into spangenic cotton varieties, hybrid cotton varieties and conventional cotton varieties. In these large varieties, it is also divided into many small varieties. Too many varieties, suitable environment and different personality characteristics make the diversity of the color class library and the collection of samples have some difficulty. 
 3., cotton planting is scattered and the degree of production intensification is not high. At present, in addition to the Xinjiang production and Construction Corps, most of the cotton growers still stay at the level of small area planting, which is generally relatively scattered, ranging from 10 acres, tens of acres to hundreds of mu, which makes cotton production in a scattered state, and lead to cotton production can not have a relatively uniform organization within a certain range of standardized planting varieties, low degree of mechanization, production intensive degree is not high. 
 4. < a href= "http://www.91se91.com" > cotton purchase > /a > liquidity. At present, the opening of cotton purchase market makes cotton farmers fluidity when selling cotton. Cotton growers will not consider the unified sale of these factors, such as quality and variety, but only consider the price and income, distance and convenience. This will lead to the fact that the cotton varieties acquired by the same purchasing station or ginning factory can not be consistent and the quality uniformity is poor. 
 establishment and improvement of < a href= > http://www.91se91.com/news/ > cotton color level < /a > data library countermeasures /p >
 although there are still some problems in the establishment and improvement of the color level data library and the application of color level data base in the inspection, summarizing the problems and finding countermeasures are the key tasks to further establish and improve the color data library of cotton. Therefore, the following aspects need to be done: 
 1., concentrating superiority and regulating cotton planting varieties. In order to reasonably use and protect high-quality cotton seed resources, standardize breeding and seed production, management and use behavior, we should select cotton varieties with high quality, high yield, strong adaptability and strong resistance to unify the purchase and processing varieties of the same area, the same purchase station or ginning plant, and then realize the regional unification and scale production of the varieties, and ultimately create the high-quality cotton brand. 
 2. encourages cotton production to be large-scale and intensive. Drawing on the development of Xinjiang production and construction corps cotton planting mode, large-scale planting farms and professional cooperatives and other forms, with advanced science and technology and modern management concept, from the variety, capital, production, operation, sales, efficiency and other aspects to adapt to the market demand, in the market comparison, gradually achieve the scale and intensification of cotton production. 
 3. uniform inspection method, perfect color level inspection standard. In the current cotton inspection system, there will still be some problems which are not compatible and not unified. The main problem is that the cotton grade of the current sensory test is not consistent with the color grade of HVI test, and the color level, yellow depth and reflectivity test are only applicable to the package inspection, resulting in cotton grade inspection still at the level of sensory examination. Therefore, the cotton standard should be reformed, and its testing methods should be unified. In particular, the color level of cotton grading should be formulated in more detailed standards. 
 the new cotton standard (GB1103.1-2012 "cotton first part: sawtooth cotton processing fine pile cotton") was released in 2012 and will be implemented in September 1, 2013. Among them, the provisions on the requirements of color grade requirements in the cotton inspection quality standard have been clearly defined, which will further promote the development of cotton color level inspection, and to a certain extent, will promote the improvement of the color level library of cotton. 
 the significance of establishing and perfecting the color level data library of cotton 
 1. is advantageous to the convenient circulation of < a href= "http://www.91se91.com/news/" > cotton commodity < /a >. Although the correlations between Rd and +b of cotton and fiber quality and yarn quality were not significant, they were significantly related to Rd and +b of cotton colored yarn, and the color of cotton was related to retention of dyes, fiber absorption and finishing ability and processing efficiency. The application of textile enterprises to the application of grade is naturally spanferred to the function of color. The limitation of judging the grade of mixed cotton and raw cotton is actually more controlled by the difference of color and color of raw cotton, and it is more accurate and direct to reflect the color of cotton. Considering the high commodity rate of cotton and the requirements of the textile industry, the adoption of color level inspection standards is also more conducive to the unification of commodity circulation and production, operation and consumption standards. 
 2. is conducive to the international trade of cotton commodities. The position of the United States cotton in the international trade of cotton is unquestionable, and its influence on the international market is also very large. Therefore, the standard division of the United States cotton also dominates the circulation of the market. As the United States makes full use of advanced detection technology and equipment, the color grading is quantified. The criteria for classification of upland cotton are also classified into 5 categories and 25 formal color grades according to their color characteristics. Other countries such as Turkey and India also used HVI test results in cotton standard formulation and inspection. Therefore, in order to facilitate international trade, the construction of color level database of cotton should be the direction of China's cotton standard development.