多熟种植与粮棉矛盾的缓解

通过棉花生产形势分析，指出粮棉争地是棉花生产徘徊的主要矛盾，并提出了粮棉碰撞系数的概念和指标。对不同熟制地区粮棉碰撞系数的研究认为，发展棉田多熟种植是解决粮棉矛盾的有效途径。从今后棉花生产区域布局讲，认为在主攻新疆棉区棉花生产的前提下，应通过套种稳定黄淮海棉区棉花播种面积，适当消减粮棉矛盾突出棉区的棉花播种面积

Multi-cropping and Land Competition Between Cotton and Grain Productions

The analysis of cotton production shows that the land competition between cotton and grain productions is the major factor limiting the development of cotton production.Also, in this paper, the concept of competition index of cotton and graincrops as well as the index parameters is put forward.According to the study of the competition index in different cotton growing regions in China, it is agreed that the extensionof multi-cropping in cotton production is an effective approach to alleviate the land competition between cotton production and grain production.From the view point of the future distribution of cotton production, it is suggested that cotton production in Xinjiangbe improved preferentially, cotton production in the watershed areas of Yellow River,Huaihe River and HaiheRiver by intercropping be stablized and the cotton production beproperly reduced in the areas which have an extremely strong competition between cotton and grain crops.