The rapid development of modern greenhouses in China since the 1990s

　　In the 1990s, with the deepening of reform and opening up, my country's national economy entered an important period of transition. The further liberalization of the vegetable market has brought greater impetus and vitality to the development of my country’s vegetable cultivation and modern greenhouse. Since the mid-1990s, modern greenhouse in my country have developed rapidly. In 1995, the Chinese government cooperated with the Israeli government to establish a “China-Israel Demonstration Farm” in Yongledian Farm, Tongxian County, Beijing, and introduced 1200㎡ modern Israeli greenhouse technology; the Shanghai Agriculture Committee organized the introduction from the Netherlands and Israel 15,000 square meters of modern greenhouse were built in Sunqiao, Maqiao and other places, and 5 experimental demonstration sites were set up for experimental demonstration. As a result, another climax of large-scale introduction of large-scale modern greenhouse from abroad has been set off. By 1998, a total of 175,400 square meters of greenhouse were introduced across the country. The introduced countries and regions include the Netherlands, France, Israel, Spain, the United States, Japan, South Korea, and China’s Taiwan region, which basically cover the countries and regions where modern greenhouse are developed; the locations of introduction and construction start from Heilongjiang in the north to the south Hainan Island, from Shanghai in the east to Xinjiang in the west, includes almost all provinces, municipalities and autonomous regions in the country; the main types of imported greenhouse include single-roof and double-roofedlarge multi-span glass greenhouse, arched circular, zigzag, Double-layer inflatable and double-layer structure plastic film greenhouse, as well as polycarbonate board (PC board) greenhouse, etc., represent all types of modern greenhouse; the supporting equipment for the introduction of greenhouse includes shading, ventilation, cooling, heating, heat preservation, automatic Control and computer management, as well as cultivation beds, movable seedbeds, drip irrigation and self-propelled sprinkler irrigation, self-propelled picking vehicles, automated plug seedlings, hydroponics equipment, etc., also basically include all advanced supporting equipment. This large-scale introduction of greenhouse, especially in Beijing and Shanghaiseveral demonstration parks, has introduced a complete set of greenhouse facilities and hardware, as well as a complete set of software technologies such as supporting varieties, cultivation techniques, and expert systems. Relevant foreign experts are invited On-site guidance has generally achieved great success and good results, and has played a very obvious role in promoting modern greenhouse, facility cultivation and greenhouse manufacturing in my country.

　　“During the Ninth Five-Year Plan period, the Ministry of Science and Technology of the People’s Republic of China listed “factory-based high-efficiency agricultural demonstration projects” ;Ninth Five-Year” The National Science and Technology Key Industrialization Project Plan has set up 6 demonstration projects in Beijing, Shanghai, Shenyang, Hangzhou, Guangzhou, and Tianjin, and organized the implementation. At the same time, various regions have also carried out more in-depth related fields. The research involves high-efficiency energy-saving sunlight greenhouse, large modern greenhouse and other facilities and supporting equipment, special crop varieties and supporting cultivation techniques, and comprehensive sets of technologies. The demonstration project has made breakthrough progress and obtained a large number of related technical achievements, which won the second prize of National Science and Technology Progress Award in 2007.

　　At the same time, including foreign-funded enterprises and Sino-foreign joint ventures, a large number of greenhouse companies have been established, and modern greenhouse facilities and supporting equipment have been developed extensively and deeply The research focuses on the digestion and absorption of foreign advanced technology, and gradually pays attention to the adaptability to our country’s climate and localization. After years of research and design, experiment and demonstration, and a large number of greenhouse engineering construction practices, it has been able to design and build energy-saving solar greenhouse and various types of modern greenhouse with distinctive characteristics of our country. Its design, manufacture, construction and overall performance of modern greenhouse, Basically reach the level of similar products in developed countries, and initially form the technical system and series of products for modern greenhouse in China, and nbsp;and in terms of adaptability to China’s climate, material selection, production technology, supporting equipment, etc., as well as in heating, heat preservation, The choice of ventilation and other programs is more in line with China's national conditions and has some Chinese characteristics.

　　“Ninth Five-Year Plan”, driven by the national macro-control and rising enthusiasm in various regions, a large number of countries, provinces and cities have been built from the central to the local , Prefecture, county and township levels, different scales and types of modern agricultural high-tech demonstration parks. Most of these parks regard the construction and application of modern greenhouse as an important part of them to carry out specialization, intensification, commercialization, and large-scale production experiments and demonstrations, which have effectively promoted the rapid development of modern greenhouse in my country.

　　By the year 2000, including the introduction of foreign greenhouse, my country already had more than 700 hectares of modern greenhouse, and they were developing rapidly at a rate of over 100,000 square meters per year. At present, the area of ​​modern greenhouse in my country has reached over 2 million square meters.