What are the benefits of a greenhouse?
1. Meet the quality requirements of urban consumer groups. Most of the vegetables we produce are sold to urban dwellers. Now the living standards of urban residents are improving rapidly, and there are strict requirements for the hygiene, safety, quality and commerciality of vegetables. Off-season, pollution-free vegetables, melons and fruits are popular with the public, and the prices are often higher.
2. Advanced technologies can be promoted and applied faster and better in agriculture. As greenhouse production utilizes natural energy, and fully implements rain shelter cultivation technology, water-saving irrigation technology, formula fertilization, and standardized production technology, the added value of products can be greatly increased, and it is more conducive to the establishment of a large-scale production base of high-quality agricultural products.
3. Reduce investment risks in planting industry. Agricultural planting is an open-air factory, and natural disasters are frequent. In March of this year, after a snowfall, I saw that nearly 100 mu of plastic-film potatoes in several surrounding villages suffered severe freezing damage and suffered heavy losses. But the potatoes planted in bamboo greenhouses are growing very well. This year, greenhouse potatoes were launched in early April, with high prices and considerable benefits. Potatoes grown in the open air were launched in late May, and the output value was about one-third of that in greenhouses. Open-air planting varieties are relatively single and concentrated, with poor quality, and the benefits can be imagined. Through greenhouse facility cultivation technology, investment risks can be effectively controlled or reduced, and the return on investment in planting industry is relatively high. Although the cost of open-air cultivation is low, the natural risks and sales risks are great, and the benefits are unstable.
4. Effective use of natural light energy in winter to produce high-quality off-season vegetables. Farmers are idle for about four months (November to March of the next year) after harvesting in the field, and these four months are the best period for greenhouse vegetable production. The new film is used in the greenhouse, and the light transmission is good (the light transmission of the new film is more than 90%, the old film is less than 60%) and the temperature rises quickly. On sunny days, the temperature in the greenhouse is more than 20 degrees higher than the outside world, and it is 2 to 3 degrees higher at night. Since the best temperature for most vegetable production is 20 to 30 degrees, and the minimum temperature for growth is at least 5 to 8 degrees, winter vegetable production can be completed through greenhouse facilities. The temperature difference between day and day in the greenhouse is large, and the nutritious production period is long.
