GREENHOUSE

Greenhouse film

1. Film Selection GuideParameterIdeal SpecificationCherry BenefitThickness0.15-0.20mmWind/snow load resistanceLight Transmission75-80% PARBalanced growth/fruit sugarUV Treatment380nm cut-offPrevents sunburn on fruitThermal Properties50% IR reflectionFrost protection (-4°C)Anti-CondensationActive drip controlReduces bacterial canker
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2. Climate Control Optimization

✔ Temperature Management

Flowering Stage: 12-18°C (extends pollination window)
Fruit Swelling: 20-25°C daytime/10-15°C nighttime
Pre-Harvest: 2-3°C diurnal variation (enhances color)

✔ Light Spectrum Adjustment

Blue Light (450nm): Improves fruit firmness
Far-Red (730nm): Accelerates ripening uniformity
UV-A Transmission: Enhances anthocyanin development

3. Structural Requirements

✔ High-Tunnel Design

Peak Height: 5-6m (for tree architecture)
Sidewalls: 2m retractable (for bee pollination)

✔ Film Installation

Triple-layer system (outer UV + middle insulation + inner anti-fog)
Sloped roof (≥25° for rain/snow shedding)

4. Cherry-Specific Benefits

Variety	Film Adaptation	Quality Improvement
Sweet Cherry	Light-diffusing	30% less cracking
Sour Cherry	UV-blocking	Thicker cuticle
Dwarf Rootstocks	Thermal film	2-week earlier harvest

5. Maintenance Protocol

✔ Dormancy Period

Full film removal for 800+ chilling hours
Apply dormant sprays before re-covering

✔ Growing Season

Weekly cleaning (maintain 85% light transmission)
Monitor for microtears near tree branches

✔ Post-Harvest

Remove film for summer hardening
Inspect/replace clips and battens

Economic Analysis

Factor	Film Greenhouse	Open Field
Yield	15-25kg/tree	8-12kg/tree
Market Window	4-6 weeks early	Standard season
Premium Price	3-5x market rate	Baseline

Advanced Technologies:
→ Smart films (automated PAR adjustment)
→ Rainwater harvesting integration
→ Phase-change materials (stabilize spring temps)

(Complies with GlobalG.A.P. and IFOAM organic standards)

Keywords: Cherry greenhouse film, Early maturation, Fruit cracking prevention, Pollination management

Technical Services:
→ Variety-specific climate recipes
→ Hail protection simulations
→ ROI analysis for high-density systems

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