1 Application of Information Technology in Soil Testing and Formula Fertilization Soil testing and formula fertilization is a scientific fertilization technique that coordinates the relationship between crop yield, quality of agricultural products, soil fertility and crop environment. The soil testing instrument and the soil testing and formula application instrument are all agricultural instruments developed on the basis of soil testing and formulating fertilization technology. Since 2005, the soil testing and fertilizer application in China has received unprecedented attention, along with the soil testing and fertilizer application in China. In-depth development, the development of soil testing and formula fertilization touch screen query system and online inquiry system. Through these query systems, farmer friends can find relevant data and reasonable fertilization recommendations for their fields with just a click. The establishment of these "inquiry systems" is essentially the application of information technology in soil testing formulation. At present, the use of information technology in soil testing and fertilization requires continuous development of database sharing, database management, fertilization decisions, and digital processing of results.
2 Soil testing and formula fertilization information processing content
2.1 Establish database and management system Apply database technology and geographic information system, organize and process soil and fertilizer data and related maps according to standards, establish attribute database and spatial database and connect them, and implement database operation and visual query through database management system. Analysis and updating and maintenance are the basic contents of information processing for soil testing and formula fertilization.
1 attribute database. The contents include field experiment demonstration data, soil and plant test data, basic field conditions and household survey data. After sorting, processing, coding, and standardization, a soil testing and formula fertilization database was established. Combined with historical data, it can be comprehensively collected and organized, and a county-level database of cultivated land resources can be established. On this basis, provincial-level and national-level databases of cultivated land resources can be established.
2 spatial database. Using geographic information technology, digital maps such as soil maps, land use maps, administrative maps, and sampling point maps were digitized to create spatial databases of different types and regions.
2.2 The establishment of soil testing and fertilizer application system 1 establish a farmland productivity evaluation system. The cultivated land fertility index model for the evaluation of cultivated land fertility was established through the natural property of the local cultivated land, as well as the contribution of this attribute to the cultivated land fertility determined by the analytic hierarchy process or experts' direct assessment. Using the GIS platform and the arable land resources basic database, the arable land fertility index model was used to establish a county-level arable land productivity evaluation system to provide guidance for different scale arable land resources management, agricultural structure adjustment, nutrient resource comprehensive management, and soil testing and formula fertilization guidance services.
2 establish a fertilizer decision-making system. The basic parameters obtained from the field experiment of fertilizer effect analysis were used to construct a crop fertilization model and a fertilization model library was established. With the help of the geographic information system platform, a decision-making system for formula fertilization was established using the established database and the fertilization model library.
2.3 The establishment of online farmland fertility evaluation and formula fertilization decision-making system will combine the gradual improvement of the network technology with the established arable land fertility evaluation system and formula decision system, develop and form an online decision system for arable land fertility evaluation and formula fertilization to achieve soil testing and formula fertilization Networking and database sharing. Users can quickly and easily obtain information on the nutrient supply and demand of farmland soil and its special maps, targeted fertilizer types, and fertilization amounts through remote networks at different times and locations.
3 Problems existing in the application of information technology for soil testing and formula fertilization
3.1 Inadequate Hardware and Software Configuration The use of information technology in soil testing and fertilizer application requires certain hardware and software configurations. At present, there is a gap between the status quo of hardware and software configuration in most counties and the information technology requirements for soil testing and fertilizer application.
3.2 Inadequate network construction Currently, the information platform of most cities and counties in the Internet has not been established, which restricts the transmission and sharing of basic data for soil testing and fertilization, and uses the services provided by existing agricultural websites for further data development. Use has yet to be improved.
3.3 The aging of existing personnel's knowledge structure At present, the agricultural technicians on the job still lack the professional knowledge of computers, and there are difficulties in using GPS, using computers and related software to build databases.
3.4 The lack of computer science and technology personnel At present, due to some compilation reasons, it is very difficult for professionals who have mastered computer knowledge and information processing to enter the agricultural technology extension departments of counties and cities. Therefore, in the informatization of soil testing and formula fertilization, the computer security maintenance and professional data management, especially the requirements for the use and secondary development of some complex tool software, still cannot be effectively solved.
4 Suggestions for strengthening the informatization construction of soil testing and formula fertilization In response to the above problems, the agricultural technology extension departments of counties and cities need to invest funds and strengthen network construction. On the other hand, they need to train existing agricultural technology extension workers and employ a group of professionals. , strengthen cooperation with scientific research units.
5 Application Prospect of Information Technology in Soil Testing and Formula Fertilization At present, the construction of agricultural informatization has been included in China's “Twelfth Five-Year Planâ€, and the National Soil Testing and Fertilization Project has taken information construction as an important part. With the development of China's agricultural information construction and the deepening of soil testing and formula fertilization projects, the application of information technology in soil testing and fertilizer application will be fully developed. The technical level of soil nutrient management in China will be marked by the degree of informatization and fully meet the needs of modern agricultural development. It is expected that in the near future, with the improvement of soil testing and formula fertilization, China's agricultural production will surely usher in a new era of scientific fertilization with the goal of yield, quality, and ecological environment.
Related equipment: Soil moisture meter
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