Application of soil testing and fertilizer application in China
Since the 1990s, soil testing and formula fertilization technology has been gradually applied in China. So far, it has been nearly 20 years since the implementation of continuous fertilization. However, this technology has not been widely used. Before 2005, the national coverage rate was only about 30%. This is related to the limited size and fragmentation of China's land parcels, low level of agricultural mechanization, limited economic strength, and low level of socialized services.
In China's economically underdeveloped regions, it is difficult to apply soil testing and fertilization due to the lack of necessary soil nutrient testers and soil testing and fertilizer applicators. Although the economically developed areas have instrumentation and equipment for soil testing and fertilization, and soil testing and fertilizer application systems, they often lack effective information processing and crop decision-making fertilization systems, resulting in the application of balanced fertilization only in local areas and difficulties in long-term adherence. Therefore, China's research base in terms of soil nutrient status, nutrient management, and fertilization technology is weak compared with foreign countries.
In recent years, the use of information technology to conduct soil testing and formula fertilization research has been gradually carried out. For example, Dai Shiming organically combines artificial intelligence technology with traditional data processing technology to develop a decision expert system for soil fertilization. Sheng Jiandong and others used the integrated development technology of database systems and geographic information systems to develop regional soil nutrient management and crop recommendation fertilization information systems. Chen Zaohuang proposed the establishment of the Xinjiang Uygur Autonomous Region nutrient partition management system based on GEG-based Xinjiang soil nutrient management and recommended fertilization systems.
In Anhui, the application of information technology in soil testing and formula fertilization has also achieved a series of research and application results. In 2001, using the data obtained from the National Soil Survey, land use status surveys, and other relevant graphic data, Hefei Soil Database System was established under the support of personal computer, vualPoxprtd5.0, WlndW898 and other software. Deleted 3 years of design and established the Anhui Province Land and Resources Database Application System. The current situation of sulfur deficiency in China's soils in the continent is in the Chinese w-order d. On the platform of WS98, MAPGIS is used as the basic operation platform, and China's agricultural sulphur information system has been developed in conjunction with Access database software to provide a soil sulfur, plant sulphur nutrition and efficient use of sulphur for agricultural technology promotion, fertilizer production and sales departments, and agricultural research departments. Information management, so that these departments can easily understand the information of the local soil sulfur, and to configure or allocate the ratio and amount of nutrients, suitable for the local soil conditions and the needs of the sulfur fertilizer for farmers to facilitate the use of flat-rate fertilizer.
In the same year, the Anhui Province Soil Fertilizer and Agrochemical Service Information System was established. The entire system is divided into nine parts, providing soil nutrients, fertilizer tests, crop cultivation, agrochemical services, new fertilizer development and production, fertilizer market, and fertilizer management information in Anhui Province. Information on industry sectors and fertilizer companies can be determined based on the geographical names, crop types, and yields of Anhui Province. The NPK fertilizer input of farmland has the recommended decision support function of compound fertilizer formula and the function of compounding ingredients for the compound fertilizer. Deleted 4 years based on AsP technology to set up the Anhui Soil and Fertilizer Information Network, which aims to conduct scientific fertilization consultations, soil fertility monitoring, farmland quality assessment, assist agricultural decision-making, promote soil and fertilizer information exchange, and gradually realize the uploading and updating of soil data and online Formula fertilization decision.
It can be seen that the combination of database technology, geographic information technology and other information technologies to establish a fertilizer application decision-making system, and to achieve online decision-making function is the development trend of China's information technology in soil nutrient management and fertilization decision-making. At present, the development of information technology in soil testing and fertilization requires the continuous development of database sharing, database management and fertilization decisions, and digital processing of results.
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