我国棉花合理布局的定量分析

根据棉花布局的目标和发展规模的制约因素，设计了三个指标，对我国棉花合理布局，进行了定量分析。棉花布局指数是从全国种植业层次衡量各地单位棉田布局的增产效益指标，其分布特点是；全国北高南低，北方平原高于山区，南方山区高于平原。根据棉花纤维品质综合评价值可知，我国各地棉花品质的优劣依次为；新疆，江汉平原，长江下游，黄淮海平原，辽河流域和西南地区。

QUANTITATIVE ANALYSIS OF RATIONAL DISTRIBUTION OF COTTON PLANTATION IN CHINA

The article frames three indexes on the basis of the goal of cotton distribution and restrictive factors for the scale of its development,giving quantitative analysis of rational distribution of cotton in China.The distributional index of cotton is an index for gauging the benefit of increased cotton yield per unit area in cotton plantations distributed over various parts of China.On the whole,it is higher in northern part of China than in southern part,higher in plain area than in upland area in the north,and higher in upland area than in plain area in the south.The guality index denotes an integreted evaluation of cotton quality,from which we can arrange cotton quality for various parts of China in the descending order of Xinjiang,Jianghan plain,lower Yangtze plain,North China plain,Southwestern China and Liao River Valley.Saturation index reflects the potentiality for the expansion of cotton plantation.According to the above three indexes,we can classify orientation and sequence of the adjustment of cotton distribution in China into two categories and four types.From now on the tendency of adjustment for cotton distribution in China will be:southern cotton plantations,move to North,upland cotton plantations move to lowlands.