1. Shadow Percentage Percentage
- درصد سایهاندازی کاربرد مناسب نمونه گیاهان
- ۳۰%-۵۰% گیاهان نورپسند گوجهفرنگی، خیار، فلفل
- ۵۰%-۷۰% گیاهان با نیاز نوری متوسط گلهای زینتی، کاهو، توتفرنگی
- ۷۰%-۹۰% گیاهان سایهپسند ارکیده، آنتوریوم، قارچ
1. Sex and durability of the greenhouse
a) The sex of the lace:
Polyethylene (PE) + uv stabilized: The most common type, affordable Useful life: 1-5 years (depending on quality) Polypropylene (PP): Better mechanical resistance, but less life against UV Aluminum yarns or coated: More light reflection and decrease in temperature (suitable for tropical regions)
Polyethylene (PE) + uv stabilized: The most common type, affordable Useful life: 1-5 years (depending on quality) Polypropylene (PP): Better mechanical resistance, but less life against UV Aluminum yarns or coated: More light reflection and decrease in temperature (suitable for tropical regions)
b) Resistance to Environmental Factors:
UV resistance → prevent premature caries Wind resistance → in high -density areas should be used with denser tissue.
UV resistance → prevent premature caries Wind resistance → in high -density areas should be used with denser tissue.
1. Greenhouse shaded color
The color of the shade has a direct effect on the inner temperature of the greenhouse and the amount of light absorbed:
Color of Features Applications
- سبز جذب متعادل نور، کاهش دمای ملایم کشت سبزیجات و صیفیجات
- سیاه سایهدهی قوی، جذب حرارت بیشتر مناطق معتدل و مرطوب
- سفید/نقرهای انعکاس بالای نور، خنککنندگی بهتر مناطق گرم و خشک
- آلومینیومی بازتابنده حرارت، کنترل دقیق دما گلخانههای پیشرفته
✅ Recommendation: In hot areas (such as Isfahan, Yazd, Fars) use white or aluminum shade to reduce temperature.
1. Method of installing greenhouse shades
Fixed (Permanent) Installation: For greenhouses that require permanent shading.
Movement (mechanized): Roll -up systems to adjust the shadow based on the season or hour of the day.
Distance from greenhouse coating: It is best to install the shade at a distance of 1–2 cm from the ceiling to improve the ventilation.
1. Benefits of Greenhouse Shade
Reduction of internal temperatures up to 1 ° C in summer
Preventing sunburn and fruits
Water savings (Reduce evaporation)
The ability to control light for sensitive plants
Final Summary and Recommendation
For vegetables and vegetables: 2-5% shade with green or white For ornamental flowers and sensitive plants: 2-4% white shade In hot and dry areas: White shade with a percentage of shade 1-5% If your goal is to cultivate mushrooms or shade plants, use 1-5% shade.
For vegetables and vegetables: 2-5% shade with green or white For ornamental flowers and sensitive plants: 2-4% white shade In hot and dry areas: White shade with a percentage of shade 1-5% If your goal is to cultivate mushrooms or shade plants, use 1-5% shade.