Abstarct: Agronomic Modeling progress and evolution can be explain like human life cycle in the form of series stages of birth, infant to maturity. Modell’s can show that a especial management is helpful device for increasing production. Plant modelings are helpful device for increasing our knowledge to understand plant system. This research intend to study the nitrogen movement in corn maize at three cultivating date at 4th may, 9th June and 15 July 2011 to 2012 in Taibad city of Khorasan Razavi. An experiment conducted in the form of factorial on the baxse of randomizes block design in three replications with three treatments. Cultivation date (temperature condition and different day length) in three levels, nitrogen fertilizer with two levels (0 and 250 kg ha-1), vermi-compost in two levels (0 and 3 tone per hectares). To quantify this reaction to temperature and day length, several functions have been used which between them, third degree model and second degree were used for predict and selecting the superior function that can shows the nitrogen percent of leaf and stem which shows decreasing trends and increasing trends in grain during the plant growth.