ỨNG DỤNG CÔNG NGHỆ THÔNG TIN ĐỂ TÍNH TOÁN DỰ BÁO LƯỢNG PHÂN BÓN CẦN THIẾT HÀNG NĂM CHO MỘT SỐ LOẠI CÂY TRỒNG CHÍNH Ở ĐỒNG NAI

The program is designed to help farmers calculate the amount of fertilizers (nitrogen, photphorous and potassium) for a number of their crops in Dong Nai province. Base on the integrate some parameters such as: soil properties, nutrients, effect of fertilizers, cultivated technology and climate..., the software was set up. The balance between these nutrient inputs and outputs shows whether the agricultural system is a net gainer or a net loser of soil fertility The model was combined by three field: information technology (ASP.Net and SQL Server), geographical information system (WebGIS) and agriculture (soil and fertilizer) to imitate amount of fertilizers for some main crops in Dong Nai province. Program results were calculated on multi-level predictions: from area of a plot to the large region of communes, districts or province about those crops such as long-term industrial crops (such as: Coffee, rubber, cashew, pepper trees); the fruit trees (durian, mangosteen, rambutan, pomelo,...), the crops such as rice, maize, vegetables and beans.