我国是世界上最大的产盐国,产盐区分布非常广泛。不仅有丰富的海盐,而且还有池盐、井盐和岩盐,制盐业在我国国民经济中具有重要地位。我国出产的盐,绝大部分是海盐,海盐是我国盐业生产的重点。我国的海盐炼制,主要是利用日光晒制,而晒盐一般应具备良好的“晒场”条件和优越的水文、气候、气象等条件。晒场一般有两个方面的要求,一是平坦、开阔;二是要尽可能地防止渗漏。我国北方沿 China is the largest salt-producing country in the world, and salt production areas are widely distributed. There are not only rich sea salt, but also pool salt, well salt and rock salt. The salt industry has an important position in our national economy. Most of the salt produced in China is sea salt, and sea salt is the focus of China’s salt production. China’s sea salt refining system mainly uses solar drying systems, and the drying of salt should generally have good “sunshine conditions” and superior hydrological, climatic and meteorological conditions. There are generally two requirements for a drying yard, one is flat and open; the other is to prevent leakage as much as possible. North of China