The Selection Of Sunshade Accessories Should Take Into Account The Type Of Greenhouse, Crop Characteristics, And Cost Budget, And Follow The Principle Of "precise Matching And On-demand Selection" To Avoid Weak Crop Growth And Low Yield Due To Improper Shading Rate.
（1） Adapt According To Greenhouse Type
Due To The Relatively Enclosed Space Of The Solar Greenhouse, Lightweight Knitted Sunshade Nets Are Preferred, Combined With Side Ventilation Systems To Form A Cooling Combination Of "sunshade+ventilation"; The Multi Story Greenhouse Needs To Adopt An Inner And Outer Double-layer Shading System, With A High Reflectivity Aluminum Foil Curtain On The Outer Layer To Block Strong Light, And An Adjustable Light Transmittance Curtain On The Inner Layer To Regulate The Light Distribution Inside The Greenhouse; For Seedling Greenhouses, It Is Necessary To Use Shading Nets That Can Be Quickly Harvested And Expanded. The Shading Intensity Should Be Flexibly Adjusted According To The Growth Stage Of The Seedlings. For Example, High-density Nets With 80% -90% Shading Rate Should Be Used During The Seedling Stage, And Medium Density Nets With 50% -60% Shading Rate Should Be Switched After Slow Seedling Growth.
（2） Customize According To Crop Needs
The Light Saturation Point Of Crops Is The Core Basis For Selection: Crops With Low Light Saturation Points Such As Chili Peppers And Lettuce Need To Choose Shading Materials With A Shading Rate Of 50% -70% To Ensure That The Light Intensity Inside The Greenhouse Is Maintained At Around 30000 Lux; Cucumbers And Eggplants With High Light Saturation Points Should Use Products With A Shading Rate Of 35% -50%, Retaining Effective Light Of Around 50000 Lux. Flower Planting Requires Higher Precision In Lighting. For Example, If Red Palm Needs To Avoid Direct Sunlight, An Aluminum Foil Sunshade With A Shading Rate Of 60% Can Be Used, Combined With A Diffuse Design To Create A Uniform Lighting Environment.
（3） Balance Between Cost And Lifespan
The Economical Option Is To Use Flat Woven Sunshade Nets Made Of New Materials, Which Have Lower Initial Costs And A Service Life Of Up To 3-5 Years; It Is Recommended To Use Aluminum Foil Sunshades With Intelligent Driving Systems For High-end Greenhouses. Although The Initial Investment Is High, It Can Reduce Winter Energy Consumption By 30% And Summer Cooling Costs By 20%, Making It More Cost-effective In The Long Run. Be Cautious Of Recycled Sunshade Nets Sold By Weight, As Their Shading Rate Is Uncontrollable And Prone To Aging And Damage, Which May Increase The Cost Of Replacement In The Later Stages.
4、 Maintenance Points: Key Measures To Extend Lifespan And Ensure Efficiency
Scientific Maintenance Can Extend The Lifespan Of Sunshade Accessories By More Than 50%, With A Focus On Material Maintenance, Mechanical Inspection, And Seasonal Protection
（1） Daily Material Maintenance
The Dust And Fallen Leaves On The Surface Of The Sunshade And Sunshade Shall Be Cleaned Every Month To Avoid Blocking The Mesh And Affecting The Light Transmission And Ventilation; When Damage Is Found, It Should Be Repaired Promptly With Specialized Tape. If The Damaged Area Exceeds 1 Square Meter, Partial Replacement Is Required. After Each Year Of Use, The Sunshade Material Should Be Removed, Cleaned, And Dried. It Should Be Folded And Stored In A Dry And Ventilated Place To Avoid Aging And Mold Growth Caused By Exposure To Sunlight Or Humid Environments.
（2） Mechanical System Maintenance
Check The Operating Temperature Of The Drive Motor Every Month, And Shut Down For Troubleshooting When It Exceeds 60 ℃; Add Lithium Based Grease To The Gear Reduction System Every Quarter To Ensure Smooth Winding; Regularly Check The Tension Of The Support Screen Line And The Pressure Screen Line, Replace Broken Or Loose Components, And Prevent The Sunshade Screen From Deviating And Jamming. The Scroll Of The Multi Span Greenhouse Needs To Be Checked For Levelness Every Year, And Any Bends Should Be Corrected In A Timely Manner To Avoid Mechanical Damage Caused By Uneven Stress.
（3） Seasonal Special Protection
Before The Strong Wind Weather In Summer, It Is Necessary To Reinforce The Fixed Connections Of The Sunshade Net And Tighten The Pressure Film Line To A Strength That Can Withstand Wind Force Of Level 8; After The Rainstorm, The Ponding On The Surface Of The Sunshade Material Shall Be Cleaned In Time To Prevent The Tensile Deformation Caused By Gravity. During The Winter Shutdown Period, It Is Necessary To Remove The Sensors Of The Intelligent Control Components And Store Them Indoors. The Exposed Circuits Should Be Wrapped In Insulation Cotton To Avoid Low-temperature Freezing And Cracking, Which May Affect Their Use In The Following Year.
