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本文以草灌带状间作、草粮带状间轮作6年试验资料为依据,按水保性能的强弱对不同处理的种植方式进行了分类。利用贝叶斯多类逐步判别法验证了经验分类的准确性。最后用模糊聚类法对不同种植方式的水保效益进行了分析与评价。结果表明:它们水保性能由强到弱的顺序为:柠条→柠条+牧草间作→单种牧草→草粮带状间轮作→粮食作物水平沟种植→普种粮食作物。
In this paper, grass irrigation shrub intercropping, intercropping with wheeled grain for 6 years based on experimental data, according to the strength of the performance of water and soil conservation of different treatments were classified. The Bayesian multi-class stepwise discriminant method is used to verify the accuracy of empirical classification. Finally, the fuzzy clustering method was used to analyze and evaluate the benefits of different types of soil and water conservation. The results showed that the order of their soil and water conservation activities from strong to weak was: Caragana → Caragana + pasture intercropping → single grazing → agroforestry banding → horizontal ditch planting of grain crops → common grain crops.