As we all know, temperature is the basic condition to ensure the normal growth of crops. Greenhouse is a thermal insulation agricultural facility for the normal and rapid growth of crops. Heat preservation is an important work in greenhouse agricultural production, so suitable covering materials must be selected. Generally speaking, glass greenhouse is better than glass greenhouse, glass greenhouse can play a decorative role in appearance, and the aging and damage problems of glass greenhouse can be relatively small compared with plastic greenhouse; in terms of performance, due to the complexity of the environment, glass greenhouse can resist various loads (wind load, snow load, etc.). Aluminum alloy (or stainless steel) + plexiglass, ordinary glass, low-cost bamboo ponds and plastic films with beautiful and durable, windproof, rainproof, sunscreen, heat preservation effect and cost, can also be equipped with sunshade and sprinkler system. Plants usually need plenty of light and better glass. Of course, the one-time investment cost of plastics is lower, but the later maintenance cost is also higher, and plastics are easy to age.
Three major cooling measures for greenhouse. If winter is over, can summer be far behind? With the increase of summer temperature, how to cool the greenhouse properly has become an important work of daily management. Below, the editor of Tengchong greenhouse will introduce the following six cooling measures. First, external sunshade system. In order to minimize heating costs and improve efficiency, how to enhance the heat preservation capacity of Baoshan greenhouse and reduce heat loss has become a concern of many greenhouse users. Is to cover the excess sunlight outside the greenhouse to form a shade to protect the crops in the greenhouse, so that the temperature in the greenhouse is kept at a suitable temperature. This can effectively block direct sunlight crops without affecting the natural ventilation in the greenhouse, and the cooling effect is better than that of internal shading, but external shading materials are required to be sturdy, durable, flexible and anti-aging
The left side of the car body is equipped with an external kitchen function for passengers to use when having an outdoor picnic, and the sunshade above is expanded to expand the range of activities when parking. The external pull-type stove is equipped with a single-eye stove, which can control the heat size independently, which improves the portability of outdoor use and increases the viewing at the same time. The design of the board is unique for passengers to place items for outdoor picnics, and items such as kitchen condiments can be placed in the internal area. The door is equipped with electric pedals to facilitate passengers to get on and off the bus.
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This is a high-rise residential building with many levels of changes on the facade and two external shading methods are used on the windows. One is a lightweight perforated metal sunshade picked out from the outer wall, one neatly arranged on the outside of the window, keeping a great distance from the outer wall. This kind of baffle sunshade can effectively block the low-angle sunlight projected from the front of the window. The surface of the sunshade is painted red and stands out on the facade. Another way is that the upper entrance of the window hole and the U-shaped sunshade panels with horizontal and vertical shading on both sides of the window can effectively block the sunlight projected from the front and side of the window. The exterior of the U-shaped sunshade is painted white, in sharp contrast to the red of the metal sunshade.
3. Sowing, seedling and transplanting of fruits and vegetables should be done in time. Sowing seedlings or transplanting seedlings at noon in sunny days should be used in time to improve the strong seedling rate and survival rate. In the near future, it is necessary to do a good job in sowing and raising seedlings of melons in the greenhouse, laying electric heating lines to raise seedlings, covering the inner film early and late in sunny weather, revealing the film at noon in cloudy and rainy weather, covering the sunshade net or non-woven cloth on the small arch shed at night, artificial lighting and warming should be carried out in case of continuous low temperature and overcast and rainy weather to cultivate strong seedlings.
If you build a color steel activity room mainly for the recommendation of growing flowers in winter, it is required that the size of the container activity room should be well measured, appropriate sunshine, plastic windows should be selected for peripheral maintenance, and a color board activity room with a larger skylight is opened on the glass roof. The price of this kind of mobile room is lower, but the indoor temperature is higher in summer and sunshade is needed. If you are because of the small housing area, in order to expand the living space, the privacy of the built mobile house requires high privacy and low economic level, then you can choose thermal insulation board roof, plastic steel window and thermal insulation wall as peripheral maintenance products. Although this kind of products are not strictly resident containers, they are cheap, economical and practical. The disadvantage is poor lighting and general ventilation. If the skylight is added, it will be greatly improved. Choose the right materials and learn how to maintain the container office so that we can live comfortably and comfortably.
It can reduce the harm of cold current. When the temperature in the shed is below ℃ for a long time, the mulch such as straw bag non-woven sunshade net should be covered in the greenhouse at night to prevent frost damage and take basin fire or furnace fire to heat temporarily. Open fire can not be used when heating, in order to prevent smoke damage, it is necessary to set up a flue to put harmful gases outside, focusing on the heat preservation and anti-freezing of vegetables and seedlings in the greenhouse. For eggplant seedlings which are in the early stage of raising seedlings, measures such as artificial light supplement and temperature increase can be taken. Prevent seedling frost injury or overgrowth; cover should be removed properly during rainy days.