【摘要】 统计 1998～ 2 0 0 0年新疆参加棉花品比区试资料 ,得出地区之间棉花比强差异与各地生育期、铃期呈反相关。内地各品种在南疆种植生育期、铃期延长 ,比强下降 ;各品种在吐鲁番种植生育期缩短 ,比强增大。同一地区同样品种 ,铃期、生育期短的比强大更多还原

【Abstract】 By the material of contrast cotton varieties in the region test it obtained that the difference of cotton specific strength, between areas and period of duration and period of boll are back correlation. The period of duration and period of boll of all cotton varieties in the interior of our country planted in south of Xinjiang were postponed, specific strength decreased; The period of duration of all varieties planted in Turpan shortened, specific strength increased. The period of duration and period of boll of the same variety of the same area shortened and specific strength increased.更多还原