Received: 25-09-2012 / Accepted: 26-10-2012
The paper presents a mathematical model depicting heat and humidity exchange process in propagation nursery of forest planting materials under of heat control by ventilation or misting hot, cool water onto nursery seed beds covered with polyethylene in the net house. The model permits observation on the effect of the net house structure and the control regimes on the transition of temperature and humidity change in nursery environment. The results of this research further contribute to scientific foundation for designing control device system and selecting optimal heat and humidity regime regulation in the net house nursery for forestry planting materials in Vietnam.