1. Crop response to elevated carbon dioxide concentration;Acock,1985
2. Global climate change and US agriculture;Adams;Nature,1990
3. The versatile soil moisture budget;Baier,1979
4. Interpolation tables for daily values of meteorological elements;Brooks;Q. J. R. Meteorol. Soc.,1943
5. The effects of elevated CO2 concentrations on growth, photosynthesis, transpiration, and water use efficiency of plants;Carlson,1980