Customers in Africa purchased our zigzag greenhouses to grow vegetables. This greenhouse is 60 meters long and 40 meters wide. The greenhouse frame is hot-dip galvanized and covered with a 3-layer PO tape scattering anti-drip film with a 5-year warranty. Equipped with internal shading system and top ventilation system. This ventilation system is suitable for use in tropical and rainy areas. Top ventilation helps the hot air inside the greenhouse escape to the outside of the greenhouse. At the same time, this top ventilation method does not need to be closed even on rainy days. At the same time, this kind of greenhouse has a very good cost performance, so it is recognized and chosen by many customers.

A customer in Uruguay purchased more than 12,000 square meters of film greenhouses. There are fan and water curtain cooling systems, and internal sunshade system. This ordinary multi-span film greenhouse is easy to build and can be put into use quickly. The cost is much lower than that of solar panel greenhouses and glass greenhouses. The only disadvantage is that the service life of the film is 5 years. Generally, after customers use it for 3 years, the customer will replace the film with a new one due to the decrease in light transmittance affecting crop growth. For crops that do not require high light, the film can be used for 5 years or even longer. This greenhouse will be put into operation in 2021 and is currently in good condition.

Greenhouses have come a long way since their humble beginnings, evolving from simple structures to sophisticated technological marvels. This journey reflects the ever-changing needs of agriculture, horticulture, and our quest for a sustainable future. In ancient times, the concept of a controlled environment for plant growth can be traced back to the Roman Empire. The Romans built rudimentary structures known as "specularia," which were used to grow exotic plants. These early greenhouses were essentially large rooms with transparent materials, such as mica or oiled cloth, to allow sunlight to enter. However, they were mainly used for the pleasure of the wealthy and did not have the advanced features we associate with modern greenhouses. During the Middle Ages, the art of growing plants in controlled environments was largely forgotten. It wasn't until the Renaissance that interest in horticulture was rekindled. Wealthy nobles and scholars began to build small gardens with glass-covered enclosures to protect delicate plants from the harsh elements. These early glasshouses were still relatively simple in design but marked the beginning of a new era in plant cultivation. Today, greenhouses are an integral part of modern agriculture and horticulture. They come in a wide variety of sizes and designs, from small backyard hobby greenhouses to large commercial operations. Advanced technologies such as computerized climate control, LED lighting, and hydroponics are being used to optimize plant growth and maximize yields. Greenhouses are also playing an important role in sustainable agriculture by reducing water consumption, minimizing pesticide use, and enabling year-round production in areas with harsh climates.

venlo big glass greenhouse for vegetable tomato planting

Tomato is a temperature-loving vegetable. Under normal conditions, its optimal growth and development temperature is 15℃--29℃, and the suitable temperature for photosynthesis is 20--25℃. When the temperature is lower than 15°C, it cannot bloom, or pollination and fertilization are poor after flowering, resulting in physiological disorders such as flower and fruit drop; when the temperature is lower than 10°C, the plant stops growing; when the temperature is lower than 5°C, it will cause low temperature damage over time; -2°C ~-1℃, it can be frozen and die in a short period of time; when the temperature is higher than 30℃, its assimilation effect is significantly reduced; when the temperature is higher than 35℃, flowering and fruiting are inhibited, and reproductive growth is interfered with or destroyed; short-term High temperatures of 40°C will also interfere with physiological growth, leading to flower and fruit drop or poor fruit development.