Abstract: During the late rice production in plain region along the Yangtze river in 2017, there was a catastrophic weather by the combination of extreme high temperature and oligophores rainy, which had a serious impact on late rice production, the yield was greatly reduced. By analyzing the main weather processes during the growth of late rice in Lujiang county, a typical area of plain region along the Yangtze river, the effects of meteorological conditionsand catastrophic weather processes on the yield and formation of late rice were discussed. The results indicated that the continuous high temperature weather from July 12 to August 7 showed the characteristics of high average temperature, high extreme temperature and long duration, and the "strength" and "force" of temperature were the highest in the past ten years. The continuous oligarine rainy weather from August 29 to October 19 showed the characteristics of many days of widowhood and concentration, long duration of rain and heavy rainfall, the number of days of oligophores was the highest in the past decade. The combined catastrophic weather reduced the development quality of late rice population in different degrees, severely reduced the indicators of various economic traits, aggravated the occurrence of major pests and diseases, and the actual yield fell by 30 percent in late rice. Some countermeasures were put forward for the future production of late rice in plain region along the Yangtze river.

Key words: catastrophic weather, late rice, production, effect, plain region along the Yangtze river