新疆棉区秋季热量条件及其对棉花产量的影响

The Heat Conditions of Cotton Regions in Autumn and its Effects on cotton Yield in Xinjiang

本文通过对新疆棉区秋季热量条件的分析 ,探讨了其对棉花产量的影响。得出 :( 1 )九十年代以来 ,虽然气候变暖 ,但秋季气温不稳定性加大。 ( 2 )喀什、阿克苏、巴州棉区中 ,以喀什棉区秋季热量条件最好 ,阿克苏棉区较差。影响棉花产量的秋季热量条件 ,巴州棉区是 9月气温和从开花至 1 5℃终日的≥ 1 5℃积温 ;阿克苏棉区是棉花生长的基本热量条件 ,即≥ 1 0℃积温的多少 ;喀什棉区是花铃期适宜温度 2 0℃持续时间的长短 。

This paper gives some analysis about the heat conditions of cotton regions in autumn in xinjiang, and discussions about its effects on cotton yield. Rusults show that:(1)Since the 1990's, climate has been becoming warm,but the unsteadiness of the temperature in autumn has been increasing. (2)Among the heat condition of three cotton regions, kashi is the best,Akesu is the worst. The heat conditions of effecting on cotton yield in autumn in Bazhou, is the temperature in september and the accumulated temperature of ≥15℃,from flowering stage of cotton to latest day of ≥15℃, in Akesu,is the accumulated temperature of ≥10℃(basic heat condition of cotton growth), and in kashi,is the accumulated temperature of ≥20℃ and the continuing times of good temperature -20℃ in blooming and boll period.