fertilizing data and amount. The soil database was developed from
the national database and seven types of soils were identified in
this area (Yu et al., 2007). The national database was updated with
the soil properties that were analyzed and the detailed features
were covered in a previous paper (Ouyang et al., 2013b). The
involved daily weather data (precipitation, maximum and minimum
temperatures, relative humidity, wind speed and hours of
sunshine) from 1970 to 2011 were obtained from two local weather
stations.