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How much do you know about sunshade nets

With the increase in the benefits of planting large cherries in greenhouses, the planting area in various places has continued to increase; however, in recent years, the drought and lack of rain have led to high summer temperatures and long light hours, resulting in an increase in deformed fruits (twins or even multiple births) of large cherries, affecting the yield of fruit trees; At the same time because of the increased labor costs of fruits and vegetables. Experiments have found that when the light intensity reaches above 100,000LUX and the ambient temperature reaches 35 degrees for 5 hours for several days, the incidence of deformed fruit increases significantly; form. Therefore, in the temperature-sensitive period of flower bud differentiation, if the temperature is extremely high, short-term shading by tree top covering to reduce air temperature and solar radiation intensity can effectively reduce the occurrence of double pistil flower buds, thereby reducing the deformity of the next year . fruit happens. Using the sunshade net to shade and cool the big cherries in the facility has become an essential operation every summer. In summer, in order to prevent high temperature obstacles, fruit and vegetable farmers often use shading methods to reduce the temperature in the shed. In actual production, there are various ways of shading, some are covered with black or silver-gray sunshade nets to cool down, and some are poured with mud and ink on the shed film to cool down. These different coloring methods will definitely have different coloring effects.

Scientific and reasonable selection of sunshade net
The main function is to block the strong light and reduce the temperature of the greenhouse. However, if you choose an inappropriate sunshade net, it will not only cause the plants to grow too long, but also not conducive to flowering and fruit setting. Therefore, the screen must be selected scientifically and reasonably.
1. Don't judge the quality of sunshade nets by color: the sunshade nets on the market are mainly black and silver gray. The black shade net has a high shading rate and quick cooling, and is suitable for short-term coverage in fields that require careful management in hot summer; the silver-gray shade net has a low shading rate, and is suitable for light-loving vegetables and long-term coverage.
2. The quality of the sunshade net is not determined by the color, the color of the sunshade net is added during the raw material manufacturing process. Therefore, different vegetables should choose shading nets with different colors and different shading rates. For example, tomato is a light-loving crop. As long as 11-13 hours of sunshine are met, the plants will grow vigorously and flower early. Although light duration is less important for tomatoes, light intensity is directly related to yield and quality. Insufficient light can easily cause malnutrition, leggy growth, and reduced flowering. The light saturation point of tomato is 70000lux, and the light compensation point is 30000-35000lux. Generally, the light intensity at noon in summer is 90,000-100,000 lux.
3. The shading rate of black shading net is as high as 70%. If black shading nets are used, the light intensity cannot meet the normal growth needs of tomatoes, which will easily cause leggy tomatoes and insufficient accumulation of photosynthetic products. The shading rate of most silver-gray sunshade nets is 40% to 45%, and the light transmittance is 40,000 to 50,000 lux, which can meet the normal growth needs of tomatoes. So tomatoes are best covered with silver-gray sunshade nets.
4. In order to achieve different shading ratios, the weaving density of each sunshade net is different. It is generally divided into three types; the shading rate of two needles is 45%; three needles are 70%; four needles are 90%. Therefore, when choosing a sunshade net, the density of the sunshade net should be selected according to the crops planted.
According to the growth characteristics of large cherries, the light intensity is the same as that of ginger, and it is recommended to use 2-pin sunshade nets.

Avoid the following mistakes when choosing:
1. Fruit growers who use sunshade nets can easily buy nets with higher shading rate when purchasing sunshade nets. They will think that the higher the shading rate, the cooler. However, the shading rate is too high, the light in the shed is weak, the photosynthesis of the crops is reduced, and the stems are slender, which reduces the crop yield. Therefore, the shade net must be selected according to the light intensity of the crops to be planted.
2. The thermal shrinkage characteristics of the sunshade net are easily overlooked by everyone. It shrinks the most in the first year, about 5%, and then gradually decreases. As it shrinks, the shading rate will also increase. Therefore, heat shrinkage characteristics should be considered when fixing with the card slot.

Color Stripe Shade Net 100GSM
Color Stripe Shade Net 100GSM
6-pin color-striped shade net with tonal stitching. The sunshade net is made of polyethylene (HDPE) material with about 1-5% UV stabilizer and antioxidant. The size can be customized, and its maximum width can reach 12 meters. The weight per square gram of the shading net is 100 grams, and the shading rate can reach more than 90%. The color-striped shade net is woven in 4-color intervals, namely white, blue, yellow, and green. The interval of different colors makes it more colorful, which is favored by merchants and suitable for commercial streets.