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Model-Based Approach to Quantify Production Potentials of Summer Maize and Spring Maize in the North China Plain

^a Institute of Crop Production and Grassland Research (340), Fruwirthstr. 23, Univ. of Hohenheim, D-70593 Stuttgart, Germany
^b Dep. of Agronomy (243), Yuan Mingyuan West Road 2, China Agricultural University, 100094 Beijing, P.R. China

View larger version (39K): [in this window] [in a new window]   Fig. 1. (A) Provinces of the North China Plain and the border of the North China Plain (black line) (Source: Bareth, 2003, adapted and modified); (B) location of the meteorological stations (Source: China Meteorological Administration, 2007).

View larger version (25K): [in this window] [in a new window]   Fig. 2. Sowing date variation for spring and summer maize across the North China Plain.

View larger version (65K): [in this window] [in a new window]   Fig. 3. (A) Precipitation amount (mm), (B) daily average temperature (°C), and (C) average solar radiation (MJ m–2 d–1) during the spring maize (April–September) and summer maize (June–September) growing season.

View larger version (52K): [in this window] [in a new window]   Fig. 4. Simulated potential yields (kg ha–1) of summer maize for different soil texture classes [(A) sand, (B) sandy loam, (C) loam, (D) silt loam, and (E) silt] in the North China Plain.

View larger version (54K): [in this window] [in a new window]   Fig. 5. Simulated potential yields (kg ha–1) of spring maize for different soil texture classes [(A) sand, (B) sandy loam, (C) loam, (D) silt loam, and (E) silt] in the North China Plain.

View larger version (47K): [in this window] [in a new window]   Fig. 6. Mean differences (kg ha–1) between summer and spring maize yields for different soil texture classes [(A) sand, (B) sandy loam, (C) loam, (D) silt loam, and (E) silt] in the North China Plain.

View larger version (45K): [in this window] [in a new window]   Fig. 7. Possible yield levels (kg ha–1) of spring maize by a later sowing date for different soil texture classes [(A) sand, (B) sandy loam, (C) loam, (D) silt loam, and (E) silt] in the North China Plain.

View larger version (45K): [in this window] [in a new window]   Fig. 8. Possible yield levels (kg ha–1) of spring maize by the use of adapted cultivars for different soil texture classes [(A) sand, (B) sandy loam, (C) loam, (D) silt loam, and (E) silt] in the North China Plain.

View larger version (46K): [in this window] [in a new window]   Fig. 9. Possible yield levels (kg ha–1) of spring maize by a later sowing date in combination with the use of adapted cultivars for different soil texture classes [(A) sand, (B) sandy loam, (C) loam, (D) silt loam, and (E) silt] in the North China Plain.