气温、CO2浓度和降水交互作用对作物生长和产量的影响

气温、大气CO₂浓度和降水等气候因子是影响作物生长发育的关键因子,而不同的气候因子对作物的影响并非独立的,多气候因子交互作用对作物的影响目前已成为研究的焦点问题.研究不同气候因子交互作用的影响,其结果更接近作物生长的实际情况,有助于了解作物甚至作物生态系统对气候变化的真实响应.国内外关于不同气候因子对作物影响的报道较多,要全面总结不同气候因子交互作用对作物的影响是非常困难的.因此,本文只对近年来有关气温升高、大气CO₂浓度增加和降水变化交互作用对作物生长发育、光合生理及产量影响的研究进展做一简要评述,并提出目前研究的不足和需要解决的关键问题,以期为气候变化对作物生长发育及产量影响的研究提供参考.

Interactive effects of temperature,CO2 concentration and precipitation on growth and yield of crops

Temperature, CO₂ concentration and precipitation are the key climate factors affecting crop growth and yield. The effects of different climate factors on crops are not independent, and their interactive effects on crops have become a focus in this research field. The study of interactive effects of multiple climate factors on crops could more reliably reflect the actual situations of crop growth, which could help us to understand the crop growth and even the ecosystem response to climate change, and optimize agricultural production managements in the future. In recent years, there are a lot of reports about the effects of different climate factors on crops both in China and abroad, and thus it is quite difficult to conduct a comprehensive review for interactive effects of all climatic factors on crops. Therefore, this review only focused on the results of the interactive effects of warming, elevated CO₂ concentration and changing precipitation on crop growth, photosynthetic physio-logy, and yield in recent years, and identified the knowledge gaps of the relevant studies and the key issues that urgently need to be solved in future research. This would be useful for the researches elucidating the influence of climate change on crop growth and yield.