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受厄尔尼诺现象影响，1997年山西特早熟棉区气候异常，持续高温干旱，光照不足，造成棉花生育期缩短，上部结铃减少，但霜前花率提高。只要采取积极措施，仍可获得较高产量
Affected by the El Niño phenomenon, the climate in the precocious cotton area of Shanxi Province in 1997 was an anomalous climate. Due to the continuous high temperature and drought, the light was insufficient and the growth period of cotton was shortened and the upper boll number was reduced. However, the flower rate increased before the frost. As long as positive measures are taken, higher yields can still be obtained