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北疆棉区集中产地的精河、车排子、乌苏、沙湾、下野地、小拐、莫索湾等地,位于北纬44°—45°,属世界最北棉区。该棉区夏季热量丰富,能满足棉花对温度的要求。但因生长季节短(平均160—170天),春季温度变化不稳定,常由于低温冷害造成棉花烂种、感染病害;春、秋季较长时间维持低温,还可延迟棉花发育,导致霜后花比例增多,品质不良。近年来,该棉区的种植面积已扩大到百万亩以上,所以,进一步研究棉花冷害问题,采取切实可行的防范措施,对于提高新疆棉花产量与质量均有重要现实意义。
The concentrated areas of northern cotton area, such as Jinghe, Chepaizi, Wusu, Shawan, Xiaobei, Xiaoguai and Mosuo Bay, are located in the latitude 44 ° -45 ° north latitude and belong to the world’s most northern cotton area. The cotton area is rich in heat in summer, which can meet the temperature requirement of cotton. However, due to the short growing season (average 160-170 days), the temperature in spring is not stable and the cotton is often rotten and infected due to chilling injury. The prolonged maintenance of low temperature in spring and autumn can also delay the development of cotton, Increase in the proportion of poor quality. In recent years, the cotton acreage has been expanded to over one million mu. Therefore, further research on the chilling injury of cotton and the adoption of practical precautionary measures have important practical significance for improving the cotton yield and quality in Xinjiang.