In The Current Rapid Development Of Facility Agriculture,Multi-span GreenhouseBy Emphasizing Control Over The Natural Environment, It Has Become A Key Facility For Promoting Large-scale And Standardized Agricultural Production. It Is Not A Simple Assembly Of A Single Greenhouse, But A Comprehensive System That Integrates Structural Design, Intelligent Technology, And Planting Needs. While Improving Crop Yield And Quality, It Also Provides A New Path For Sustainable Agricultural Development.
1、 Core Considerations Before Construction
The Construction Of Multi Span Greenhouses Needs To Be Scientifically Planned Based On Regional And Demand Factors. In Terms Of Site Selection, Priority Should Be Given To Areas With Flat Terrain, Sufficient Sunlight, Convenient Water Sources, And Far From Pollution Sources. In The North, Avoid Air Vents To Reduce Heating Energy Consumption, While In The South, Ensure Smooth Drainage And Prevent Waterlogging. The Scale Design Needs To Match The Planting Target. Family Farms Or Small And Medium-sized Bases Can Be Built With An Area Of 5000-10000 Square Meters, While Large Agricultural Parks Can Be Planned With An Area Of Over 50000 Square Meters, While Reserving Mechanical Operation Channels And Equipment Installation Space. In Terms Of Cost Control, The Economical Option Includes Thin Film Coverage And Basic Control System. With Sufficient Budget, It Can Be Paired With Glass Coverage And Intelligent Devices To Balance Initial Investment And Long-term Returns.
2、 Key Technology Upgrade Direction
Nowadays, Connected Greenhouses Have Undergone A Transformation Towards "intelligence". In Terms Of Environmental Regulation, In Addition To Traditional Temperature And Humidity Control, A CO ₂ Fertilization System Has Been Added, Which Monitors Concentration Through Sensors And Timely Supplements To Improve Crop Photosynthesis Efficiency; Some High-end Greenhouses Have Introduced AI Algorithms To Automatically Adjust The Duration Of Window Opening, Heating, And Supplementary Lighting Based On Weather Data, Achieving Precise Management. In Terms Of Energy Utilization, Photovoltaic Greenhouses Have Become A New Trend. Installing Photovoltaic Panels On The Top Not Only Meets The Lighting Needs Of Crops, But Also Generates Electricity For The Greenhouse's Own Equipment, Reducing Energy Consumption Costs; Northern Greenhouses Can Also Be Equipped With Ground Source Heat Pumps For Heating, Utilizing The Underground Constant Temperature Characteristics To Achieve Energy-saving Heating.
3、 Significant Economic Benefits And Ecological Value
In Terms Of Economic Benefits, Multi Span Greenhouses Can Increase Land Productivity Through Annual Production. For Example, Tomato Planting Can Yield More Than 20000 Kg Per Mu, Which Is 3-4 Times Higher Than Open Field Planting, And The Product Quality Is Uniform, With A Large Premium Space. Meanwhile, Mechanization And Intelligence Reduce Manual Labor Input, Saving 2-3 Labor Costs Per Acre. In Terms Of Ecological Value, The Integrated Water And Fertilizer System Significantly Reduces The Waste Of Water Resources And Fertilizers, And Is Combined With Physical Pest Control Measures Such As Insect Nets And Sticky Insect Boards To Reduce Pesticide Use, Which Meets The Requirements Of Green Agriculture Development; Some Greenhouses Can Also Achieve The Recycling Of Planting Waste, Crushing Dead Branches And Leaves As Organic Fertilizer Raw Materials, Forming An Ecological Closed Loop.
4、 Future Development Trends
In The Future, Multi Span Greenhouses Will Pay More Attention To "functional Integration". In Addition To Planting, They Can Also Integrate Leisure Picking, Agricultural Research And Other Functions To Create An "agriculture+cultural Tourism" Model And Enhance Comprehensive Income. Technologically, Blockchain Traceability Will Gradually Be Applied, And Consumers Can View The Entire Process Of Crop Growth Data By Scanning The Code, Enhancing Product Trust; Material Innovation Will Continue, And New Types Of Lightweight, High Transparency, And Aging Resistant Covering Materials Will Further Reduce Greenhouse Construction And Maintenance Costs, Promote The Popularization Of Multi Span Greenhouses In More Regions, And Help Accelerate The Development Of Agricultural Modernization.
