Small reservoirs can be built where conditions permit. Halophytes are planted around the reservoirs, and the prawns are raised in seawater. As early as 199, teacher Fan Qingmin of Dongying Agricultural School in Shandong Province succeeded in cultivating China prawns into adult prawns through the winter with the salinity of 3g/L. In fact, the salinity of this "salty water" is equivalent to that of Bohai water. There are thousands of economic creatures living in the ocean. High-tech can be used to breed excellent varieties of marine animals and plants (such as those in Bohai Sea) and transplant them into the desert artificial sea. The development of "salt lake agriculture" means that "salt lake and its ecological environment can be developed into a new type of agriculture, which is not only a kind of aquaculture in salt waters, but also closely related to salt-tolerant biota around salt waters, thus forming a new field of research and development of aquatic products-agriculture and animal husbandry." "Salt lake is not only the producing area of inorganic salts, but also a new type of' farmland': it can be used not only for fishing and breeding new crops such as Dunaliella salina, Artemia, Spirulina, some salt-tolerant fish species and birds, but also for applying the special mechanism of salt-tolerant bacteria in salt lake to industry and agriculture, and also for planting salt-tolerant crops around the lake. It is a new field for human beings to obtain protein, food pigments, fats and other foods and a variety of industrial and scientific materials. " Relying on man-made sea, the surrounding areas are widely planted with alkali-bearing desert plants, improving grassland and developing desert tourism, relying on bioengineering, breeding excellent plant varieties resistant to heavy alkali, heavy salt, seawater or salt-loving, salt-secreting, covering bare desert with vegetation, developing agriculture and animal husbandry, and promoting processing industry and tourism.
Academician Zheng Mianping, Research and Development Center of Salt Lake and Hot Water Resources, Chinese Academy of Geological Sciences (1995, 1999) pointed out: "The biological resources of salt lake system include two subsystems: salt marsh zone and salt water area. There are often many halophytes distributed in the salt marsh zone, such as Artemisia halophila, HaloChenopodiaceae, Sesbania, Red Willow, Amorpha fruticosa, Elaeagnus angustifolia, Salix Salix, Salix psammophila, Flower Stick, Seabuckthorn, Herba Ephedrae, Ammopiptanthus ammodendron, Glycyrrhiza uralensis, etc. Most of them are feed or fuel for cattle and sheep, and some can also be used as seedling forests (such as the last three species), so halophytes are used in the salt marsh zone. Some halophytes also absorb a lot of saline-alkali and improve soil quality. For example, Artemisia halophila is rich in crude fat, potassium, calcium and other ingredients, which is not only a favorite feed for livestock, but also a large amount of salt. According to the determination, Artemisia halophila, which grows for 1 year every ．66hm2, can absorb 72kg of salt and 64k9 crude alkali from saline soil. A taciplex halophyte in Australia also has the characteristics of absorbing soil salt and has been used to help India transform saline-alkali land. According to Indian scientists, the plant is an excellent feed and cheap fuel, which is of great significance for transforming saline soil in the desert into fertile land. The United Arab Emirates feeds goats and sheep with two kinds of succulent halophytes of Chenopodiaceae in saline land. The results show that the weight of sheep grows faster than that of ordinary hay. It is estimated that the harvest of halophytes in saline land can support 2 sheep. "
There have been successful examples of greening with continental salt water with mineral concentration equivalent to seawater in China. The Tarim Desert Petroleum Highway is 522 kilometers long, of which 446 kilometers pass through the Taklimakan Desert, which is called the "Sea of Death". It is the first long-distance highway built on a flowing desert in the world. The sand dunes along the highway are tall and mobile, and the natural conditions are harsh, and the wind and sand hazards are very serious. To ensure the smooth flow of the desert highway, sand prevention measures must be taken. The national "Eighth Five-Year Plan" scientific and technological key project "Comprehensive research on sand prevention and control technology of Tarim desert oil highway" selected salt-tolerant sand-fixing plants that can tolerate saline soil and highly mineralized skin water, and conducted comparative screening experiments. The salt crust with a surface thickness of about 2 cm along the Tarim desert oil highway and the salt content in the surface layer are generally 5 ~ 2 g/kg, which is not common in other deserts in northern China. Sand Prevention and Control in Tarim Desert In the high-salinity sandy soil, "irrigated with 25g/L high salinity water, Calligonum Calligonum, Haloxylon ammodendron and Haloxylon ammodendron all grow normally, while halophyte and Erigeron spinosa grow well", which means that Bohai water with salt content of 23g/L ~ 31g/L can be directly used for desert greening. If it can be mixed with salt water (or fresh water) with low salt content produced in the desert, the effect of artificial greening of the desert will be better.
Salt lake brine has a good heat storage function, and humans have begun to use solar salt pools to generate electricity. Solar pond is a kind of salt pond with a certain concentration gradient, which can be used as both solar collector and heat storage. Because of its simple structure, convenient operation, low price, and suitable for large-scale use, it has attracted increasing attention from all countries in the world in recent years.
There are eight deserts in the north of China from east to west, which are: Horqin Sandy Land, Hunshandake Sandy Land, Mu Us Desert, Kubuqi Desert, Wulanbuhe Desert, Tengger Desert, Badain Jaran Desert and Taklimakan Desert, and they are continuous in latitude. In the 21st century, China is facing a serious shortage of fresh water resources. Breaking the traditional mindset, making full use of the vast water in the Bohai Sea and transferring 5 billion to 3 billion cubic meters of water every year will undoubtedly become the most ideal water source for transforming the northern desert! In a word, the principle of "Seawater Diversion to the West" is as follows: replacing fresh water with seawater as ecological water, filling the closed tectonic basin in the desert (the basement is composed of extremely thick rocks), forming an artificial sea to suppress the desert, curb sandstorms, and developing artificial marine aquaculture, salinization industry and surrounding sand industries such as greening, planting and tourism; In addition, it can also be used as a water vapor supply source to moisten the northern climate and increase rainfall. The implementation of the seawater diversion project to the west, using the "baton" mode to transfer water, and based on the principle of "do what you can, be near first and then far, break each one and reach the designated position by stages", can benefit from the construction at the same time. The preliminary project is not difficult, the construction period is short, and the investment is small. It can not only transform the ecological environment of Hunshandake Sandy Land, Kubuqi Sandy Land and Mu Us Desert, which are close to Beijing, but also obviously improve the atmosphere and atmosphere in Beijing-Tianjin-Tangshan area. After all the long-term projects are in place, the eight deserts in the north will be completely transformed.
Where conditions permit, seawater desalination can be done to solve the drinking water problem for people and livestock. Don't be afraid of land salinization, at least it is better than water shortage. It can also increase the water vapor in the sky to achieve the purpose of precipitation. When there is water in the desert, sandstorms can be eradicated, and seawater is inexhaustible. Later, water will be delivered to eight deserts to rebuild a big south of the Yangtze River. This plan is being discussed with Tianjin Agricultural Reclamation Bureau. If it is implemented, it will benefit the country and the people and benefit future generations.