Choose the shade net reasonably! Don't judge the shade net by its color

2023-06-02

At present, sunshade nets on the market are mainly black and silver gray. Black sunshade net has high shading rate and fast cooling. It is suitable for short-term covering use in fields requiring fine management in hot summer. Silver gray sunshade net low shading rate, suitable for light - loving vegetables and long-term coverage.

Tomatoes, for example, are light-loving plants, and as long as they get 11 to 13 hours of sunlight, they will grow robustly and bloom early. Although the effect of light duration on tomato was less important, light intensity was directly related to yield and quality. Insufficient light, easy to cause plant malnutrition, growth, flowering reduced. Tomato light saturation point is 70 thousand lux, light compensation point is 30 thousand to 35 thousand lux, general summer noon light intensity is 90 thousand to 100 thousand lux.

The shading rate of black sunshade net is high, which can reach 70%. If black sunshade net is used, the light intensity cannot meet the normal growth demand of tomato, which is easy to cause the tomato to grow and the accumulation of photosynthetic products is insufficient. The shading rate of most silver gray sunshade nets is 40%~45%, and the light transmittance is 40,000 ~ 50,000 lux, which can meet the normal growth demand of tomato. So tomatoes are best covered in a silver gray sun shade.

At present, there are two kinds of sunshade net production materials on the market. One is made of high density polyethylene added color masterbatch and anti-aging masterbatch produced by petrochemical enterprises through drawing and weaving; the other is made of recycled old sunshade net or plastic products through reprocessing. It is understood that the sunshade net produced with recycled materials is not only low finish, hard feel, more with pungent smell, and short service life, most can only be used for one year. And high density polyethylene sunshade net anti-aging, durable, its service life can reach 3-5 years.

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