In the past 10 years, the greenhouse has become an indispensable facility for solving the problem of seasonal food shortage in urban and rural areas in northern China. Its structure and performance have also been continuously optimized. Now introduce some greenhouse structures that have been introduced, designed and built by Shandong Agricultural University. 1. W-2. 1-3. Type 2 modern greenhouse. The greenhouse was introduced from Korea in 1999. 4. It is used for the cultivation of vegetables and flowers. 5. Single span 7m, 6. Height 4.8m. Using galvanized 7. Steel pipe structure, 8. Three consecutive buildings, no wall. Each section has a semi-circular arch shape. 9. In winter, the oil-fired air heater heats up. At night, each slope covered and covered the surrounding greenhouse insulation material. 10. Each floor supported the top horizontal surface covered with a double layer thermal insulation curtain. An automatic environment control system is set up in the greenhouse. 11. Automatic ventilation, cooling and roll-up curtains are realized. Summer facilities. The greenhouse has a simple structure, 12. It is fully functional, 13. The cost is relatively low in the world, and 14. It is also an internationally advanced greenhouse. There are no pillars in each room, 15. No shading, 16. All sides and top can be lighted, 17. Increased light transmittance and land use efficiency. Large interior space, 18. Easy to operate. However, the greenhouse insulation performance is poor, 19. The winter needs dedicated heating equipment 20., 21. The energy consumption is relatively high, 22. The operating costs are high. Applicable to teaching, scientific research institutions, 23. Or perennial professional planting 24, breeding higher value-added products. 25. Double-storey multi-storage intelligent solar greenhouse. This greenhouse is an on-campus tender 26. On the basis of 27. Design by yourself. Completed in 1998, 28. Used for the production of vegetables and flowers, 29. Span 6m, 30. Height 4m. Galvanized 31. Steel frame. The cross-section of the roof is semi-circular in shape. 32. Double-layered plastic film is used as insulation material. 33. Covered with nighttime 34. Warm material. A greenhouse in the north has a back wall and Chong 35. Gables. The wall is a hollow brick, 36. Filled with perlite material. Between the pillars near the rear wall, 37. With cultivation facilities, 38. For stereoplantation 39. Indoors are equipped with temperature, ground temperature, humidity and other prison facilities. There are biogas facilities underground in the greenhouse, and 40. Biomass gas can be heated in the winter. Utilize the solar water heater on the top of the greenhouse to store energy, 41. Through the circulating flow of hot water, 42. Increase the temperature of the digester, 43. Increase the production of biogas. The insulation on the roof is retracted by a motor. In addition to the greenhouse before and after the support, the indoor without pillars, no shading, more lighting surface, strong light. The rear wall was transformed into a planted area, which compensated for the loss of indoor roads, improved land utilization, and achieved three-dimensional planting. The use of solar energy in the winter does not require other heating facilities, energy saving, no pollution, and significant heat preservation effects. This greenhouse has a low cost relative to imported greenhouses, but its automation level is not high. The greenhouse is suitable for the climate characteristics of North China and has a good promotion prospect. General energy-saving solar greenhouse. This solar greenhouse is a curved slope greenhouse. The span is generally 7-10m, the ridge height is 2.5-3.8m, and the back wall thickness is 0.8-1m. Skeletons are mostly made of galvanized steel pipes, with back walls and gables. The slope of the greenhouse is covered with plastic film as insulation material, covered with grasshoppers or space-cotton composite insulation materials in the evening, and retracted with human, manual or electric shutters. This kind of greenhouse structure has good thermal insulation effect and low cost. However, due to the fact that the three sides are walls, the lighting is poor, the indoor low-light area is large, and the land use efficiency is low. Poor ventilation and human or manual retrieving of insulation materials are time-consuming and laborious, and the requirements for the structure and temperature and light performance of greenhouses are getting higher and higher, and technical renovation of such greenhouses should be implemented.
Products collected from living horses include mare's milk, used by people with large horse herds, such as the Mongols, who let it ferment to produce kumis. Horse blood was once used as food by the Mongols and other nomadic tribes, who found it a convenient source of nutrition when traveling. Drinking their own horses' blood allowed the Mongols to ride for extended periods of time without stopping to eat.The drug Premarin is a mixture of estrogens extracted from the urine of pregnant mares (pregnant mares' urine), and was previously a widely used drug for hormone replacement therapy.The tail hair of horses can be used for making bows for string instruments such as the violin, viola, cello, and double bass. They are also used
for shaving and cosmetics products. Tetanus vaccines are still made from
the blood of immunized horses.
Other Horse By Products,Horse Hair,Horse Hair for Wig,Horse Hair for String
Jiangxi Institute of Biological Products Inc. , http://www.jxinstitute.com