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麦 (夏 )棉两熟棉铃发育受以温度为主的气候条件和种植方式两个因素影响 ,铃期平均日均温低于 2 0℃的麦套、麦后直播夏棉棉铃发育明显劣于正常播种的单作夏棉 (铃期平均日均温大于 2 0℃ ) ,相同播期、铃期平均日均温均在 18℃左右的套夏棉和麦后直播夏棉的棉铃发育差异较小。铃期平均日均温在 2 0℃以上的套夏棉、麦后移栽夏棉和正常播种的单作夏棉 ,其棉铃发育受种植方式作用较大 ,相同播期条件下的棉铃发育差异因种植方式、棉铃发育指标而异。根据研究结果认为本棉区 2 :1麦套夏棉适宜播期应在 5月底以前 ,麦后直播夏棉是不可行的 ,麦后移栽夏棉在生产上以 5月 15日左右育苗、 6月 10～ 15日移栽为最佳。
The cotton (summer) cotton boll development was affected by temperature-based climatic conditions and planting methods. The average daily temperature of boll stage was lower than 20 ℃, Compared with the normal cottonseed (P <0.05), the normal cottonseed (P <0.05), the average daily average temperature in the boll stage is more than 20 ℃, the same cotton sowing date at the same sowing date, small. The average daily average temperature at 20 ℃ in summer and summer after cotton transplanting and normal sowing of single summer cotton, cotton boll development under the mode of planting larger, the same sowing date cotton boll development Due to planting methods, boll development indicators vary. According to the results of the study, it is considered that the suitable sowing date of 2: 1 wheat straw summer cotton in this cotton area should be before the end of May, but it is not feasible to broadcast summer cotton after wheat straw. After summer wheat transplanting, June 10 ~ 15 transplanting as the best.