| Abstrakt: |
The trend of the relative climate change during the growth period of winter wheat in Jiangsu, China and its possible impact on the growth period of winter wheat are analyzed, using agro-meteorological experiment, statistical methods and GIS data analysis technology. The main meteorological elements change over time: the temperature rises, while sunshine duration, amount of precipitation and wind speed decrease. The amplitudes of relative change of climate were ranked as follows: wind > temperature > precipitation and sunshine. The relative climate change in Jiangsu is most obvious in the northeast part of North Jiangsu, along the Yangtze river and southeastern part of South Jiangsu. It might cause the increase of vulnerability of winter wheat production, the aggravation of natural disasters such as drought, waterlogging and freezing during the growth of winter wheat. A significant instability of the yield and quality might also be caused. Climate change mainly occurs in the vegetative period of winter wheat, while relatively small changes occur in the reproductive growth stage. The impact of climate change can be mitigated by breeding new cultivars and promotion of new technology, so as to guarantee the ecological, efficient, high-quality development of winter wheat. [ABSTRACT FROM AUTHOR] |
