The benefits and selection methods of thermal insulation quilts in vegetable greenhouses

Vegetable greenhouse insulation is made of chemical fiber and chemical fiber, and professional anti-radiation treatment is carried out on the surface. The corrosion degree is light and slow in specific acidic and alkaline environments. Therefore, it can be stored for a long time without deterioration. The self-corrosion resistance of the vegetable greenhouse insulation quilt is less than 150-200 microns in the greenhouse, which can guarantee a 15-year service life. For greenhouses with wood or steel welded truss structures, the greenhouse construction should consider its durability. It is required to use a large load for design wind and snow load; a simple greenhouse with bamboo and wood structure has a service life of 5-10 years, and a large load of 15 years is required for design wind and snow load. Due to the long-term operation of the greenhouse in a high temperature and high humidity environment, it is necessary to ensure that the surface anti-corrosion treatment is carried out every year. Make the reflective efficiency reach more than 95%. The concave and convex points on the surface make the light evenly illuminate the plant surface and accurately simulate the effect of sunlight. The light source is specially designed and manufactured according to the solar spectrum. The spectral range, the multifunctionality of light production required for plant growth. In winter, it is necessary to strengthen heat preservation, prevent cold and frost, the climate in winter is cold, the temperature is low, and strong winds and cooling weather often occur to prevent vegetables from being damaged by low temperature. Therefore, heat preservation is so important in terms of cold protection and warmth. In production, shed farmers use multiple mulching cultivation techniques. In layman's terms, they are covering the ground with plastic film to increase the heat capacity of the soil; covering the greenhouse in winter can effectively adjust the indoor temperature. But for the sake of science, the thermometer should be hung again. The indoor thermometer should be hung on the upper part of the plant. The air temperature of different parts during the day is basically proportional to the height, especially when the plant is lush and high. Due to the shading effect of branches and leaves, the temperature drop gradient is very obvious when measured from the growing point to the ground. Take brightening measures to increase the light intensity and prolong the light time. The cleaning benefits of the vegetable greenhouse insulation quilt: 1. It enables sunlight to irradiate the golden greenhouse and is absorbed by the plants for photosynthesis; 2. It is particularly important to improve the daylighting rate, especially in the cold season, and the production of the insulation quilt is very important; 3. Corrosion and materials, basically no lint in use, and can absorb the dust on the greenhouse film; 4. Keep the greenhouse film clean and bright, and improve the amount of light in the greenhouse; 5. The quality of the crops produced by increasing the temperature difference is greatly improved. It is especially suitable for planting melon and fruit crops; 6. The thermal insulation quilt cleans the greenhouse film, and there is no need to clean it, which reduces the damage to the greenhouse film; 7. Since the thermal insulation quilt is softer than that of straw, it greatly reduces the The degree of damage to the greenhouse film caused by the use of the roller shutter machine. Selection method of insulation quilt for vegetable greenhouse: 1. Detect the degree of insulation. The advantage of insulation quilt over straw curtain is that it is not ventilated, and the insulation effect is greatly improved. The main factor that determines the insulation effect is the application of insulation layer. There are mainly miscellaneous cotton and silk wool on the market. , Foaming pearl cotton. Miscellaneous cotton has high cotton content, good thermal insulation effect, and the price is suitable. It is the main component of thermal insulation quilts in the market. The advantage of silk cotton is that its chemical composition is stable, but it is ventilated, light in weight and high in price. Generally, the amount of use is very small. Foamed pearl cotton has just been applied in the past 3 years. In the vegetable greenhouse insulation quilt, the advantage is that it can be fully waterproof, and the disadvantage is that the price is high and the transportation cost is high. 2. What kind of fabric is used for tensile and top use, and thermal insulation is a facility with a large one-time investment. Compared with straw curtains, the service life has an account. Nowadays, there are no tensile, corrosion-resistant and affordable fabrics on the market. Spinning and making quilts are generally used for 6-10 years. Of course, according to the selection of raw materials and processing technology, the product grades are also divided into several levels. For 500g flower material, the air-laid fiber is short, the processing technology is simple, and the quality is poorer. , the price is generally about 1.3-1.6, the high-speed carding and laying fiber is long, the needle punch is dense, the quality is good, the price is generally between 1.5-1.7, the black material and the gray material have more fiber content than the flower material, the silk is long, and the price is more expensive per square meter About 0.5-0.6 yuan, the fabric determines the service life of the thermal insulation quilt, so vegetable farmers and owners need to pay attention when choosing. 3. Processing technology and internal control system determine product quality, such as the selection of quilting threads, the internal and external application of tension belts, the composition of thread buckles, and whether the product ingredients are sufficient. It is not only to consider the production capacity of an enterprise, but also to examine the integrity of a business owner. and work style. 4. The selection of thermal insulation quilts should take into account the regional factors. The relative temperature in Henan and Jiangsu is high in winter, and the quilt can be made thinner. In the northwest and northeast, the thickness of the quilt should be increased. Secondly, consider the plant habits. The choice of cold-resistant and warm-loving plants is different. For example, the quilt of the tomato shed can be thinner than that of the cucumber shed. It is also necessary to consider the structure of the shed, such as brick walls, earth walls, and whether there are heating facilities.