| Through analyzing the newest research result on nitrogen management of cotton and experimental results, on the base of the different effects from nitrogen on cotton yield, plant height and leaf area, a dynamic knowledge model for decision making on total nitrogen and their distribution among main growth stages of cotton under different environments and yield targets was developed, with the principles of nitrogen balance and by integrating the factors of climate, soil, yield and variety. A comprehensive and intelligent knowledge model-based decision support system for cotton management was established using VC++6.0 and SQL Server 2003. |
