Precision horticultural climate engineering parameters, solar Daily Light Integral (DLI) curves, seasonal thermal screen deployment strategy, and heating/cooling load calculations for Đà Lạt, Central Highlands, Vietnam (Subtropical Highland (Cwb, 1,500m)).
In Đà Lạt, Central Highlands, Vietnam, natural solar Daily Light Integral transitions from 30-36 mol/m²/day during winter solstice to 32-38 mol/m²/day at summer peak. For commercial crops like Bell Pepper, Beefsteak Tomato, Chrysanthemum, Strawberry, target canopy DLI requires dynamic screen management to avoid photoinhibition during midday radiation spikes exceeding 850 W/m².
Screen Specification: Diffused PE Film (>=70% Diffusion) to Prevent Sunscald
Primary Cooling Strategy: Gothic Multi-span Natural Airflow
Maintaining positive day-night temperature differential (DIF) and nighttime dehumidification minimizes condensation on cold structural glass surfaces, suppressing Botrytis and powdery mildew spore viability.
Major protected cropping varieties grown at scale in this regional cluster: Bell Pepper, Beefsteak Tomato, Chrysanthemum, Strawberry.