Study On The Expert System For Fertilization In Village Level Farmland Based On ArcGIS Engine

In recent years,the country has paid great attention to the ecological environment protection,but the agricultural non-point source pollution is still the main cause of the ecological environment pollution.Agricultural non-point source pollution is mainly caused by irrational use of agricultural fertilizers and pesticides.The expert system of soil testing and formulated fertilization can achieve fertilization according to requirements by measuring soil nutrient content,and realize precise and intensive agricultural fertilization by using GIS technology.This paper research related research of soil testing technology at home and abroad,and summarizes the application status quo of China's rural farmers' Fertilization problems and GIS technology in the fertilization expert system,through field investigation,analysis and research,in Longfu village,Shengping town,Pengzhou City,Sichuan province Chengdu city as village level fertilization research the expert system of the data source,the use of advanced geographic information technology(GIS),the development of computer aided decision system based on the technology of soil testing and fertilizer,can make farmers timely and convenient for fertilization expert knowledge and experience.The main contents of this study are as follows:(1)In this study,field sampling and survey of Pengzhou City,Shengping town Long Fu village range of soil,crop and soil fertility level information,rural land use map and collected in the study area and the latest satellite remote sensing image,the spatial sampling and soil nutrient values were calculated based on each study area plots of soil nutrient values by using GIS spatial interpolation technique,according to soil available nutrient and organic matter abundance index plots to determine the nutrient level.(2)Through the analysis of the village farmland soil testing and fertilizer expert system demand,the development technology of ArcGIS Engine components to build the village farmland fertilization expert system architecture and database design based on the touch screen query terminal using the flat design of the whole system and the detailed design after the stored database test plots,the soil nutrient information the abundance level and fertility level information,and the data of remote sensing images,such as land use status as the necessary storage space panchromatic system map spatial data,and the corresponding soil types,soil nutrient information to establish the association,realize the connection of spatial data and GIS vector data.Then according to each data block(field)of soil nutrients,provide high,medium and low three target yield of elemental fertilizer and compound fertilizer fertilization scheme based on,but also provide each block(field)including the head of the household(farmers),target yield and fertilizer(pure nutrient fertilizer and goods the quantity of information,the price of fertilizer and fertilizer)method and Fertilization Recommendations card,and provides the Fertilization Recommendations card printing function,in order to really guide scientific fertilization,farmers increase production effect.