Large and medium-sized cities are densely populated. High-rise buildings are in a decent competition. There is a lack of urban afforestation area. Many buildings are flat-roofed roofs, and some residential buildings have terraces or roof terraces. Even greening is now used in many countries in the world. The air on the roof platform is good, the light is sufficient, the temperature difference between day and night in summer is large, the soil temperature is high, and the fertilizer is easily decomposed, which is beneficial to plant growth. The following points should be noted for the cultivation of flowers on the roof: 1. To reduce the load on the building, the use of sawdust, vermiculite, ash, etc. mixed with soil, can reduce weight, in order to facilitate loose soil permeability, promote root growth, increase the capacity of absorbent fertilizer. At the same time, the soil thickness is controlled to a minimum. Generally, the turf and herbaceous flowers are cultivated to a depth of 16 cm; the shrubs are 40-50 cm deep; the trees are 75-80 cm deep. 2. Place heavy objects such as flower pots, planting tanks, and flower pots on bearing walls or columns. 3. Smooth drainage, do not allow water to build up the roof. After the ponds and pots are watered and showered, excess water must be drained in time. Irrigation equipment should also be convenient. It is best to have a shower device to increase the other air humidity. The roof is strong and the air is dry. Check out the latest buying information every day. 4. The wind on the roof is large, windbreak protection should be provided, and proper shade in summer. 5. The type of plant should be Xiyang, drought-tolerant and well-developed root systems. The best is fibrous root flowers. Because of their well-developed horizontal root systems, they can adapt to shallow soil layers. Shelfs can also be erected to plant climbing flowers. In the next few species of negative-tolerance flowers, or tables and chairs can be arranged for rest. 6. If only for the cooling of the sun, you can plant ground cover plants, midnight and other ground cover plants. According to practice, the temperature of the roof can be lowered by 4-5°C. It also protects the roof structure. Now think. Roses such as rose, Milan, Jasmine, rose, spring, June snow, and pomegranate Tangpu can all grow well on the roof. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
1. Imported PET film is used, with high transparency, high acid and alkali resistance, and scratch resistance; Disposable Medical Face Shield,Medical Face Shield With Visor,Medical Face Shield Visor,Medical Face Shield Jilin Sinoscience Technology Co. LTD , https://www.jilinsinoscience.com
2. Reasonable structure, suitable for workers of various head shapes, can directly cover myopia glasses, convenient for work;
3. This product can effectively avoid the infection of the medical staff caused by the blood and body fluid splashing of the virus carriers in the process of receiving medical treatment and accident treatment;
4. Light weight, ergonomic design, built-in soft pad to reduce the pressure of the cap body on the forehead, comfortable to wear, no pressure;
5. The anti-fog performance is good, the PET protective sheet disperses the fog faster than the ordinary film, and a unique fog dispersing port design is added to give you a clear vision at any time;
6. It is firm and reliable to wear, and you will not feel inconvenience when bending over or bowing your head;
7. The protection area is large, the effect is good, and the protection range can reach the entire face. Because of its economical and cost-effective characteristics, it is very popular among users.
[Features of this product]: This product is a new protective product that integrates eye, mouth, nose and nose protection. It is composed of high-transparency anti-fog film, sponge, resin buckle and rubber band. It is suitable for hospitals, dentistry and other health research institutions, pharmaceuticals , food, cosmetics and other industries, wearing it on the forehead can not only absorb sweat, but also relieve the pressure formed by wearing it for a long time. The unique groove sponge design can increase the air flow and increase the comfort of medical staff when wearing it.