关键词: 生理生化, 生理生化

Abstract: In order to reduce the loss of the rice frost disaster, achieve the frost disaster risk management, and to provide a scientific basis for the rational distribution of agricultural production, the authors used the climate data, geographic information and the economy data, the early frost disaster risk and the vulnerability of rice were analyzed, the framework for early frost disaster risk assessment and regionalization was built based on the GIS technology, the characteristics of early frost disaster were also analyzed under the background of climate warming. The results showed that, the rice early frost disaster could be divided into 5 grades according to the hazard and the vulnerability of natural disaster bodies. Each grade regions were different due to the different type of impact factors. Climate warming makes the early frost disasters occurrence decreases, but the climate conditions instability and the adaptability of the human behavior made the potential danger of frost disasters increased.