GREENHOUSE

Greenhouse Film

1. Film Selection by Flower TypeFlower VarietyOptimal Film TypeKey Light RequirementsRosesDiffused Light (0.15mm)60% Haze, 85% PAROrchidsUV-Blocking (0.10mm)≤5% UV TransmissionLiliesClear Film (0.12mm)90% PAR, High EARPoinsettiasPhotoselective (Red)R:FR Ratio 1.5-2.0
Specialty Films:
Anti-condensation (for humidity-sensitive species like gerberas)
Thermal IR-blocking (for tropical flowers in cold climates)

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2. Climate Control Parameters

✔ Light Management

DLI Optimization: 12-20 mol/m²/day (adjustable via film opacity)
Spectrum Control:

Blue light (400-500nm) enhances stem strength
Far-red (700-800nm) accelerates flowering

✔ Temperature & Humidity

Day/Night ΔT: Maintain <5°C for consistent growth
RH Control: 60-70% via anti-fog coatings

3. Structural Adaptations

Film Installation:

Double-layer inflated (5cm gap, reduces heat loss by 40%)
Retractable roof (for hardening-off seedlings)

Light Enhancement:

Prismatic films (increase winter light by 15%)
Supplemental LED (during <10hr daylight periods)

4. Flower-Specific Benefits

Species	Film Feature	Quality Improvement
Tulips	UV-Transmitting	Deeper pigmentation
Carnations	Thermal Film	20% Longer Vase Life
Chrysanthemums	Blackout Film	Precise flowering control

5. Durability & Maintenance

✔ Lifespan: 4-6 years (with 5-layer UV protection)
✔ Cleaning: Bi-weekly (maintains >92% light transmission)
✔ Snow Load: 80kg/m² rating for northern climates

Economic Comparison

Factor	Poly Film Greenhouse	Glass Greenhouse
Initial Cost	$10-25/m²	$150-300/m²
Energy Savings	50-70% less heating	Baseline
Light Adjustment	Instant (film replacement)	Fixed transmission

Advanced Solutions:
→ Smart light-diffusing films (cloud simulation)
→ Self-cleaning nanocoatings (reduce labor by 30%)
→ Integrated spectrum sensors (automated film selection)

(Complies with ISO 14001 environmental standards and Floriculture Sustainability Initiative guidelines)

Keywords: Flower greenhouse film, PAR optimization, Photoperiod control, Ornamental horticulture

Technical Services Offered:
→ Spectral analysis for specific cultivars
→ Retrofitting existing structures
→ Disease-prevention film formulations

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