Polyethylene greenhouses are becoming more and more popular in modern agriculture,
mainly for the following reasons:
1. Greenhouses have advantages of environmental control
Film greenhouse has temperature regulation
Film greenhouse has good thermal insulation properties and film greenhouse can effectively block heat loss when the outside temperature is low. For example, in early spring, late autumn and even winter, polyethylene greenhouse can create a relatively warm growth environment for crops, so that some vegetables, flowers and other crops that can only be planted in warm seasons can be planted in advance or the harvest period can be extended. On the contrary, during high temperatures in summer, measures such as covering sunshade nets and ventilation can appropriately reduce the temperature, prevent crops from being harmed by high temperatures, and allow cool-loving crops to grow better during hot periods.
Film greenhouse has humidity control
Through reasonable ventilation design, the air humidity can be effectively controlled in the film greenhouse. For example, in the growth stage when crops need more water, ventilation can be appropriately reduced to maintain a high humidity for growth; in the stage where diseases are prone to breed, ventilation can be increased to reduce air humidity, reduce the probability of disease occurrence, and create humidity conditions suitable for different growth periods of crops.
Film greenhouse has light regulation
Sufficient light can be ensured by using covering materials such as plastic films with good light transmittance. At the same time, for periods of excessive light, auxiliary facilities such as sunshade nets can be used to adjust the light intensity and duration to meet the differentiated needs of different crops for light. For example, some shade-loving flowers can obtain an ideal light environment in the polyethylene greenhouse through shading and other means to avoid strong light burns.
2. Greenhouses have ability to resist natural disasters
Plastic roll greenhouse has windproof
The sturdy polyethylene greenhouse structure can withstand strong winds of a certain intensity. Compared with open-field planting, plastic roll greenhouse greatly reduces the risk of crops being blown down or broken by strong winds, ensuring the normal growth of crops. Especially in windy areas such as coastal areas, the windproof role of polyethylene greenhouses is particularly critical. For example, film greenhouses for growing vegetables on the coast can allow vegetables to grow stably in windy seasons.
Plastic roll greenhouse has rainproof
In the rainy season, the plastic roll greenhouse can prevent excessive rain from directly eroding the crops, preventing water accumulation in the soil from causing hypoxia and root rot in the crop root system, and can reasonably drain rainwater through the drainage system combined with the film greenhouse terrain to maintain a good soil and crop growth environment. For example, some melon and fruit crops that are sensitive to water can better avoid the harm of heavy rain in the polyethylene greenhouse.
Plastic roll greenhouse has snow prevention
In areas in the north where snow falls in winter, a properly designed polyethylene greenhouse can withstand the weight of a certain thickness of snow, prevent crops from being buried or crushed by heavy snow, maintain a relatively stable space in the polyethylene greenhouse, and ensure the safety of crops in the facility overwintering. For example, in the plastic roll greenhouse where strawberries are grown in the north, a solid trellis structure can protect the normal growth of strawberry plants during the snow season.
3. Greenhouses can improve land utilization and crop yield and quality
Plastic roll greenhouse has multi-crop planting
Plastic roll greenhouse can achieve multi-crop planting, shorten the crop growth cycle, and plant multiple crops in a year, which increases the multiple cropping index of the land and enables limited land resources to produce more agricultural products. For example, leafy vegetables can be planted 3-4 times or even more in a year in a polyethylene greenhouse, while open-field planting may only have 1-2 times.
Plastic roll greenhouse has precision management
Plastic roll greenhouse is convenient for precise irrigation, fertilization, pest control and other agricultural operations. Water-saving irrigation methods such as drip irrigation and micro-sprinkler irrigation can be used to accurately supply water, accurately apply fertilizers according to crop needs, reduce fertilizer waste, and facilitate timely detection of pests and diseases and take targeted prevention and control measures to make crops grow strong, thereby increasing yields, and improving the appearance, taste and other qualities of agricultural products, producing higher-quality products that are more in line with market demand. For example, off-season fruits grown in film greenhouses often have good appearance, high sweetness, and are more popular with consumers.
4.Greenhouses can extend the supply period of agricultural products and increase economic benefits
Polyethylene greenhouse has off-season supply
Film greenhouse can break the seasonal restrictions of traditional planting and produce off-season agricultural products. In the market, when a certain agricultural product is in the off-season, the products produced in the film greenhouse can fill the market gap and obtain a better price advantage. For example, greenhouse cucumbers, tomatoes and other vegetables in winter can often be sold at a much higher price in the market than in the peak season, which greatly increases the income of growers.
Polyethylene greenhouse has stable supply ensures stable prices
Through film greenhouse planting, we can ensure a relatively stable supply of some agricultural products throughout the year, avoid large fluctuations in supply caused by seasonal changes, and cause large price fluctuations. It is also of positive significance for stabilizing the market price of agricultural products and ensuring the daily consumption needs of consumers. In the long run, film greenhouse is also conducive to the sustainable development of the planting industry.
5.Greenhouses can expand the scope of agricultural planting and the selection of planting varieties
Polyethylene greenhouse breaks through regional restrictions
Some crop varieties that were originally not suitable for local open-field planting can be successfully planted in the area with the help of greenhouses. For example, in some cold areas in the north, tropical and subtropical fruits such as dragon fruit and bananas can be planted in film greenhouse for experiments, demonstrations, and even industrial production, film greenhouse broadens the boundaries of agricultural planting and enriches the types of local planting crops.
Polyethylene greenhouse has special crop planting
Polyethylene greenhouse is suitable for the planting of some special flowers, medicinal plants, and other crops that have special requirements for the growth environment, polyethylene greenhouse provides conditions for the diversified development of the agricultural industry. For example, some precious Chinese medicinal materials can be artificially cultivated in film greenhouse to simulate their native environment, which promotes the development of new agricultural forms such as characteristic agriculture and urban agriculture.
