Study on the dynamic modeling of leaf age and leaf area index change of potato

Based on five-year different protected and common cultivation field experiments and by using Oringin and SAS software intergraded with the principles of bio-mechanism, dynamic models of leaf age development and leaf area index change of potato were submitted. The simulated results showed that the methodology was of easy usage, clear mechanism and high accuracy. The approaches of using isotope tracing techniques to develop the crop population development simulation for digital agriculture were analyzed. (authors)