Quantification of Water Stress Factor for Crop Growth Simulation II. Model Establishment and Validation

Based on crop-water eco-physiological relations, water stress factor for crop growth simulation was quantified, which integrates the availability of soil moisture, the sensitivity of crop different development stages and different physiological processes (such as photosynthesis, transpiration, partitioning) to drought and waterlogging stress, and the effect of (waterlogging) duration. With data sets from the pot experiments validations on algorithms of drought and waterlogging stress factors indicated a good performance in reliability.