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根据1997年、1998年、1999年气候斑发生的情况，并结合当时气候因素及有关技术资料，分析其发生规律。在气温陡降、土壤湿度增加、烟株周围环境臭氧含量达到一定浓度时，烟叶易发生气候斑，尤其在烟株生长发育旺盛阶段。气候班主要由外界条件引发，在制定生产技术方案时，应结合当地气候条件，合理安排播栽期，使烟叶旺长期处于稳定的外界环境中，同时要科学施肥，提高烟株的营养抗性。
According to the occurrence of climate patches in 1997, 1998 and 1999, and combined with the prevailing climatic factors and relevant technical data, the occurrence regularity was analyzed. When the temperature dropped sharply and the soil humidity increased, the ozone content around the tobacco plants reached a certain concentration, the tobacco leaves were prone to climate spots, especially during the vigorous growth and development of tobacco plants. Climatic classes are mainly triggered by external conditions. When formulating production technologies, the planting period should be reasonably arranged in line with the local climatic conditions so that the tobacco leaves will be in a stable external environment for a long time and scientific fertilization should be conducted to improve the nutrition resistance of tobacco plants .