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棉花干物质积累和生长发育规律的动态变化，国内外有过不少报道，但研究的棉花产量水平一般都在1500Kg·hm－2左右［1－3］。进入九十年代后，新疆的棉花生产发展进一步加快，产量水平不断提高，出现了大面积皮棉产量在2250～2400Kg·hm－2，乃至3000Kg·hm－2的高产棉田。近几
The dynamic changes of cotton’s dry matter accumulation and growth and development have been reported at home and abroad. However, the cotton production levels studied are generally around 1500Kg · hm-2 [1-3]. Since the 1990s, the cotton production in Xinjiang has further accelerated and the output level has been continuously raised. There has been a high-yield cotton field with a large area of lint yield of 2250 ~ 2400Kg · hm-2 and even 3000Kg · hm-2. Recent