At present, Jiangxi late rice is at the end of the booting stage to the heading stage. A cold air affects China's main grain producing area from north to south, and the temperature has turned sharply. The lowest temperature in Nanchang has fallen to 16 °C. The late rice in the flowering stage is the biggest test for the production of autumn grain. Cold dew is a cold damage caused by the cold air intrusion in autumn and the obvious cooling down. The reporter saw in Nanchang County, a large grain production county in Jiangxi Province, that local villagers are strengthening the management of late rice through pumping and heat preservation and field fights to reduce the adverse effects of “cold wind”.