Spatiotemporal Change of Heat Stress and Its Impacts on Rice Growth in the Middle and Lower Reaches of the Yangtze River

Heat stress will restrict rice yield in the middle and lower reaches of Yangtze River. An understanding meteorological conditions heat production is important for improving accuracy phenology simulation. Based on observations agrometeorological stations this region, as well future scenarios, study analyzed spatiotemporal change its impacts growth region from 1990 to 2009. The results showed that frequency early increased 2000 2009, late single-season decreased. Moreover, advance under conditions. consistency index shows attributed climate changes extreme events. Under it found increase, which have a serious impact production. suggest positive effective measures should be taken adapt