1. What are the coverage of Shading nets?
In the southern area, the coverage of the shade net is mainly covered with floating surfaces, large, medium, and small flat sheds, large, medium, and small arch sheds covered, and there are also a small amount of greenhouse coverage.
1. Floating surface coverage
It refers to the coverage of the coverage directly on the ground or plant with a Shading net.The annual use of this method is mainly used for the coverage of vegetables from sowing to the seedling period, and the Shading net is unveiled after the seedlings.The effects of Shading, cooling, moisturizing, and riot rain in summer, the effects of preventing rain, heat preservation, and moisturizing in winter to create favorable conditions for seeds germination and seedlings.During the day, the method of unveiled at night to shorten the seedling period and improve the seedling rate. In addition, it can be used to cover the floating surface 7-10 days before the harvest of the late summer and autumn.
2. Single -type small flat shed covered
For the main coverage of leafy vegetables, bamboo poles, bamboo pieces, wooden sticks, cement columns and other materials can be used on the noodles of about 1 meter to cover the shade net.Generally, floating surface coverage after sowing or transplantation, the long-visited types of crops, weather and other conditions of the coverage time are depends on. The high temperature during summer and autumn should be covered by 15 days.Gaerry and cauliflower are covered with 20-25 days. Symphony, small mustard, lettuce, kale, celery, etc. can be covered with full fertility period. When the weather turns cold in autumn, kale, mustard, Chinese cabbage, broccoli, cauliflower, lettuce, etc.Cover 15-20 days.
3. Zhongping shed coverage
Use 1.5-1.8 meters long, 0.33 cm Planted pipes to set up a simple flat shed on the noodles, cover the sunshade net, and the Shading net should be flat and straight, about 1.5 meters high.50 cm, preventing the typhoon from being blown down. This method is simple, the cost is low, the field operation is also convenient, and the ability to resist typhoons is better.Suitable for leafy dishes, early or full -blooming.

4. High flat shed coverage
The height is 1.8-2.0 meters, and the cement column with a length of 2.2 meters and a thick 12 cm X10 cm is used as a water pipe and iron wire fixed bracket.There are more materials, installation, and low ability to resist typhoons.Suitable for leafy vegetables to cultivate or eggplant fruits, early coverage of melon Beans, etc.
5. Small and medium arched sheds cover
It refers to the use of the skeleton of small and medium arch sheds as support, covering the coverage of the shade net.It is mainly used for seedling, transplantation, early cultivation of autumn vegetables or anti -season cultivation.The center of the small shed is about 0.5-1.0 meters high, about 1.0-1.5 meters wide, 7-8 meters long or base blocks.The center of the middle shed is about 1.0-1.5 meters, 2-3 meters wide, 10-15 meters long or base blocks.
6. Greenhouse coverage
It refers to the use of cement, steel, etc. to cover the shade net for skeleton materials or cover the Shading net on a plastic film greenhouse.It is mainly used for seedling, summer and autumn vegetables delayed or early -maturing cultivation, and can also be used for some vegetables such as leafy dishes or some fruits of winter and anti -season cultivation.The center is about 2.5-3.0 meters, 6-12 meters wide, 40-55 meters long, and covers an area of 333.3-666.7 Square meters.
7. Greenhouse coverage
It refers to the coverage of the Shading net on the greenhouse.It can be divided into two ways: flat sheds on the top of the greenhouse and the flat shade net sky curtain in the greenhouse.Outdoor coverage is better than indoor coverage. It is good for ventilation and heat dissipation and cooling.It is mainly used for anti -season cultivation, postponed cultivation in summer, or early -maturing cultivation of autumn vegetables.
2. precautions for covering the shade net in summer
Covering the Shading net is the most commonly used cooling method in the high temperature season, but the wrong coverage method will affect the cooling effect and even play a negative role.
1. It is best not to close the shed
Black Shading nets absorb more heat, which will directly pass the heat to the shed to shorten the life of the shed film. At the same time, the heat of the coverage of the shed is slowly disappeared, and the ideal effect of cooling down can not be achieved.
How to use it correctly: It is recommended to keep a distance of 0.5-1 meters from the shade net and the shed surface to ensure that the air between the shade net and the shed surface can flow, which can accelerate the loss of heat in the shed, but also achieve a good Shading effect, reduce the shed shed sheds, reduce the shed sheds.Heat is hot.
Practice has proved that compared with the setting of the shade net and the shed film, the temperature in the former is 5 C or more than the latter.
How to make the shade net and the shed film open?
When a single greenhouse is covered with a Shading net, vegetable farmers can put two earth Bags with two film pressure membranes on the steel frame structure or large bamboo pole at a certain distance.
For bases or parks and places where greenhouses are relatively concentrated, automated Shading equipment can be used.During the specific settings, the steel pipe stent is preset at the back wall, the gables on both sides and the front face, about 1 meter from the shed, and the shed surface is equipped with a steel wire, covering the shade net on the steel wire, and the support network is set at 0.5 meters.Rope to fix the Shading net.
Finally, install the nose of the machine on the steel pipe at the front face of the greenhouse. In this way, just hold the remote control and press the button to easily complete the stretching of the shade net.At the same time, the Shading area can be flexibly adjusted in combination with weather conditions.
2. The Shading time should not be too long
The coverage of the shade net is too long, which will affect the photosynthesis of vegetables and is not conducive to the normal growth of vegetables.Vegetable Shading should be combined with weather conditions, vegetable types and vegetable growth stages. The requirements for light intensity and temperature are flexibly grasped.
Materials used for Shading, such as Shading nets, generally use sunny covers and unveil on cloudy days; lid at noon, in the morning and evening;If there are many rainy weather and the temperature is not too high. After the vegetables are planted, the shade material can only be covered in the slow seedling stage.In addition, when a long -term sun or root disease occurs, vegetable farmers can also use Shading nets to avoid the occurrence of plant withering.