◆ 2 is to protect against cold and keep warm. Pay attention to the heat preservation of vegetables, check whether the greenhouse film is broken or not, close the shed timely in the morning and evening, properly uncover the film and ventilation when the temperature is high, adjust the temperature and humidity in the greenhouse, and increase the light. After the air temperature drops below 5 ℃, we should take multi-layer covering and heat preservation, and if necessary, take measures such as electric heating, emergency lighting, etc., especially to do a good job in the heat preservation of vegetable seedling places. Open-field vegetables can be tied around the waist, floating surface covering sunshade net, straw and other anti-freezing.
From the point of view of yield, it is mainly the anti-freezing damage of low temperature in winter. This technique is relatively easy for greenhouse loquat. For Jiangsu and Zhejiang areas, it is necessary to prepare double-film covering materials after entering December, and double-film mulching should be carried out when the cold air comes or the lowest temperature drops below 5 degrees Celsius. When the lowest temperature affected by cold air is below 0 degrees, further heat preservation work needs to be done on the basis of double film. The main measures are as follows: first, sprinkler irrigation should be carried out during the day to increase soil water content and humidity to increase heat capacity. the fog produced by the cooling of high humid air can slow down the temperature drop; second, build a sunshade net on the loquat tree. Third, the heating treatment is carried out in the shed, and the heating time is from the second half of the night to the morning. The prevention index of frost injury during flowering is to keep the temperature in the shed above 0 degrees.
Comprehensively do a good job in cold prevention and warmth protection, ensure that the three-layer thermal insulation cover of the inner and outer shed film and grass curtain is in place, and on this basis, add an inner arch shed apron, and use the abandoned agricultural plastic film or idle sunshade net in stock to cover the grass curtain or non-woven fabric, press the edge, cover it tightly, and set up a two-layer film in the greenhouse if possible. Dangerous shed or damaged and collapsed shed can harvest the vegetables in the shed and store them indoors in advance so as to reduce the economic loss as much as possible.
China stipulated on October 1, 2007, “the visible light transmittance of the front windshield is not allowed to be less than 70%, and the side window glass is not allowed to post mirror reflective sunshade film.” But in real life, there are often many car owners in order to save money, choose to paste a cheap high imitation film in the automobile supplies wholesale market or roadside shop, but do not realize that this kind of inferior film, not only can not work, but also because it contains formaldehyde, benzene and other harmful ingredients to release harmful substances to the car, damage to the health of passengers, less than two years will fade, but also need secondary film, secondary consumption of
To sum up, there are many kinds of automobile interior decoration, but the materials of antibacterial and bacteriostatic testing interior parts can be roughly divided into three categories: fabric, leather and plastic. the main interior parts include steering wheel, seat, sunshade, shift handrail, dashboard, auxiliary dashboard, seat belt, door interior panel, handrail, ceiling, carpet and so on. According to different interior materials and their antibacterial agents, more suitable test and evaluation methods should be selected according to the classification of materials. The Agar plate diffusion method is suitable for rapid qualitative detection, and the absorption method and oscillation method should be selected according to whether the soluble antibacterial agent is soluble or not. The antibacterial evaluation of flat materials such as plastics and coatings by using the film method can more directly reflect the antibacterial effect of the surface materials of finished products.
Because the car audio is mostly installed in the upper part of the dashboard, in order to avoid the exposure of the sun, the effect of using sunshade is better. If the door and window sealing strip is not strict, it should be replaced, otherwise the loudspeaker is easy to rust and damage, or even cause short circuit to burn the main engine. The specific heat of the circuit board and plastic components in the car audio mainframe is different, so it is affected by the temperature change to a different extent. In the scorching sun, it is good to use the sunshade to resist the scorching sun and avoid the direct sunlight.
Yibin curtain wall aluminum veneer manufacturers add external sunshade, awning and properly add the length of southward balcony can play a certain role in shading. A heat-reflecting fabric window cloth plated with metal film is arranged on the inside of the window, and the front has the function of decoration.
Do a good job in repairing and consolidating the damaged greenhouse of Dendrobium candidum. First of all, repair the damaged greenhouse film and close the greenhouse film to prevent cold air from entering the greenhouse. Generally adopt the form of “greenhouse + middle shed + small shed” or “greenhouse + sunshade + middle shed” to carry on the greenhouse multi-layer covering heat preservation treatment. Then reinforce the Dendrobium candidum greenhouse. Along the longitudinal axis of the large (medium) shed, a support such as bamboo is used to support and strengthen the roof every 2-3 meters, so as to improve the compression resistance of the shed and prevent the shed from falling under snow pressure. If there is external shading equipment on the scaffolding, the shading net on the external shading should be tightened to prevent damage caused by snow pressure. Special snow sweeps should be provided.
In the hot summer sun, the temperature in the car can rise to the point where it is impossible to enter, and car shading is a convenience that can slow down the warming rate. But even if they are all called car umbrellas, car sunshades, some are suitable for affixing on the outside of the car, and some can be fixed inside the car; they can also be subdivided into front windshields or side windows, plus the size and function are not the same, how to choose and buy is also a perplexing problem.
3. Use a sunshade. Sunshades are like umbrellas for cars, which can block the sun and prevent ultraviolet rays. It can play a good role in protecting the items in the car, such as navigators. When parking, put the front and rear and left and right sides of the car on the sunscreen, which can reduce the thermal effect of solar radiation on the temperature in the car.
