Research progress on response and adaptation of global soybean production to climate change^*

Climate change characterized by climate warming has had an important impact on soybean production around the world. Based on the relevant literature at home and abroad, this paper summarizes the current methods applied to the study of climate change and soybean production, summarizes the response of soybean phenology and yield to climate change, and gives management suggestions. The main conclusions are as follows: (1) The research methods of the impact of climate change on soybean production mainly include field experiment observation, statistical analysis method and crop model simulation. The observation method of field experiment is the most intuitive, the statistical analysis method can guarantee the reliability and objectivity of the results, and the model simulation method has strong mechanical rationality and good extrapolation effect. (2) The response degree of soybean phenology and yield to climate change is spatially heterogeneous across the globe. In general, the whole growth period of soybean will be shortened by 5.8d and the yield will be decreased by 6.05% for every 1℃ increase in temperature. With an increase of 10mm of precipitation, soybean yield will increase by 3.66%. For every 10ppm increase in CO2 concentration, production will increase by 1.67%. (3) In terms of adjustment management measures, measures such as variety replacement, sowing date adjustment and technology upgrading should be taken to improve soybean yield potential and make up for the negative impact of climate change.