【摘要】 对新疆喀什、阿克苏及石河子棉区所在气象站 1 961～1 997年 1 0 ,1 5 ,2 0 ,2 5℃ 4个界限温度的初、终日期、持续日数和活动积温等项统计资料的计算分析发现 :①≥ 1 0℃持续日数和积温阿克苏棉区 1 0 ,2 0年际变化很小 ,喀什、石河子棉区变化明显。② 80年代以来北疆棉区热量明显增加 ,南疆棉区则在减少 ;主要界限温度持续日数北疆棉区明显延长 ,南疆棉区呈缩短趋势。90年代是新疆植棉热量变化最大的时期。指出 90年代南疆只宜种植中熟偏早棉花品种 ,北疆棉区则可适当扩大植棉范围更多还原

【Abstract】 Analyzing first day, last day, the day numbers of duration and active cumulative four boundary temperature (10,15,20,25 ℃) during 1961～1997 for the meteorological stations in Kashi, Aksu and Shihhotze cotton areas, main conclusions obtained are as follows: ① The 10 year and 20 year change of day numbers of duration, cumulative temperature of ≥10 ℃ are very little in Aksu cotton area, but great in Kashi and Shihhotze cotton area. ② Heat quantity has increased evidently in cotton areas of Northern Xinjiang since 1980’s; the day number between first and last day for main boundary temperatures has extended evidently in cotton areas in the North of Xinjiang, but decreased in cotton areas of the South of Xinjiang. The period of heat changing most greatly for planting cotton in Xinjiang is in 1990’s. The paper points out that middle mature and early Cmiddle mature cotton breed are only suitable for planting in the South of Xinjiang in 1990’s, but the extent of planting in the North of Xinjiang cotton can be extend slightly.更多还原