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根据田区试验、降水和产量统计资料，结合经济效益应用灰色系统理论分析了宁南旱地作物的气候适应性。结果表明，秋熟作物比夏熟作物更适应当地的半干旱气候条件。因此，秋熟作物对当地降水资源的利用率、水分转换效率、高产和稳产性以及经济效益等明显优于夏熟作物。分析结果为调整旱地种植结构、建立稳定型种植制度提供了依据。
According to the field experiment, precipitation and yield statistics, combined with the economic benefits of gray system theory analysis of the dry land in South Ningxia climate adaptability. The results showed that the autumn ripened crops were more suitable for the semi-arid climate than the summer ripened ones. Therefore, the autumn crops are obviously superior to summer crops in terms of utilization rate of local precipitation, water conversion efficiency, high yield, stable yield and economic benefits. The results provide the basis for adjusting the planting structure in dryland and establishing a stable planting system.