Study on the models of cultivated grain production capacity
Using the model to calculate the cultivated grain production capacity is one of the scientific instruments, which is also necessary for analyzing the current and future cultivated grain production capacity. This paper summarizes both domestic and foreign estimation models of grain production capacity in the last decades, analyzes the application of mechanism models, statistical models and integrated models of grain production capacity, and makes statistical analysis in grain production capacity through the factors such as light, temperature, moisture, climate, soil condition, est.. Also, comparison and analysis are presented relating to both the range and the application among these types of models. The result shows that the integrated models of grain productive capacity could make full advantage of mechanism models and statistical models, and could be regarded as an effective, accurate method for production estimation. But there are still some problems, we have offered the suggestions to the existing problems and prospects: the cultivated grain production capacity should be linked not only with natural factors but also social, economic and technological factors as well; the perfectness of physical-based models also needs more supporting data, and the help of correlative technique with the combination of multiple methods and multi-disciplinary knowledge. Grain production capacity will be more important in agricultural productivity along with further researches, so we should update the research methods and meanwhile promote the popularization of research results.
foodgrain production capacityestimation modelscomparison
NETL
NSTL
万方数据
维普
