Duan Jiannan

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Selected the agricultural mechanization, population, resources, and energy of the four broad categories of agriculture production material, analyzed single and comprehensive input indicators and the indicators of agricultural economic development impact, and used GM (1,1) to predict the agricultural production material input, brought forward(More)
Based on the analysis of the bioenergy crop production function of land use, combined with the current situation of Chinese land use, this paper analyzes and discusses the cultivation of energy plants and the bioenergy crop production function of land use. Results show that there is a lot of unused land and marginal land to plant bioenergy crops to perform(More)
In agricultural management information system, establishment of direct, clear three-dimensional geologic map is the basic ability for the staff of program designers. This paper analyzes and discusses on how to use VisualStudio.NET@ to draw a three-dimensional geological map for details, especially, it is very important for readers to the methods of setting(More)
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