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.
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
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.
There is still a large cold spell after the Beginning of Spring, which causes freezing and chilling injury to eggplant and fruit vegetables in the greenhouse. To this end, it is necessary to continue to do a good job in preventing cold and freezing. At this time, eggplant fruit vegetables have had a large growth, so it is necessary to cover with two layers of film in the greenhouse. Melons are more likely to be frozen than eggplant fruits, in addition to using two-channel film cover, rice straw bundles can be stacked in the skirt position around the greenhouse to enhance resistance to cold air invasion around the greenhouse; melon seedlings, which are still in the seedling raising stage, can be covered with sunshade net, straw curtain or non-woven cloth on the small arch shed at night to enhance heat preservation capacity; in case of strong cold air coming, we must do a good job of anti-freezing and heat preservation measures.
The optimum temperature for strawberry seedling growth was 25 ℃ ~ 30 ℃, and the stolon stopped growing when it exceeded 32 ℃. Therefore, in the early stage, the greenhouse should do a good job of heat preservation, improve the air temperature and substrate temperature, and promote the early emergence of stolons. In the southern region, the temperature from mid-May to early July is suitable for the occurrence of stolons, during which the number of stolons is large and the interval between stolons is short. From mid-July to August, with high light intensity and high temperature, the greenhouse should be covered with a sunshade net with a shading rate of 60% from 9 am to 5 pm every day, so as to reduce the temperature and ensure the normal growth of mother and offspring. In addition, moderate shading in the later stage of seedling cultivation can meet the low temperature and short day conditions needed for strawberry flower bud differentiation and promote strawberry flower bud differentiation.