棉花是纤维、蛋白质、油料三者并重的经济作物,全身都是宝,棉花的根、茎、叶、花、果(棉铃)都能提供各种工业原料。棉花起沅于赤道附近热带地区,经过人类长期的选择和驯化,棉花栽培地区不断向南北推移和扩展。目前世界棉花生产分布十分广泛,自北纬47°至南纬32°之间70多个国家从事棉花生产。棉花是当今世界种植面积最大、分布区域最宽的工业原料作物。近二、三十年来,尽管化学纤维大量发展,但棉花具有吸湿、透气、舒适等优点,其生产量和消费量仍处于上升的地位。近期,国际市场纺织品和服装越来越趋向“天然化”,将促进棉花消费的稳定增长。因此,棉花被世 Cotton is a cash crop with balanced fiber, protein and oil. The whole body is a treasure. The roots, stems, leaves, flowers and fruits of cotton can provide a variety of industrial raw materials. Cotton rose Yuan in the tropical region near the equator, after long-term human selection and domestication, cotton cultivation areas continue to move north and south and expansion. At present, the cotton production in the world is widely distributed. Cotton production takes place in more than 70 countries between 47 ° N and 32 ° S. Cotton is the largest planted area in the world, the most widely distributed industrial raw materials crops. In the past two or three decades, cotton has the advantages of hygroscopicity, breathability and comfort in spite of the large-scale development of chemical fibers, and its production and consumption are still on the rise. Recently, the international market, more and more tend to textiles and clothing “naturalization” will promote the steady growth of cotton consumption. Therefore, the cotton was worldly