东南部红壤区生态农业模式主成分分析研究

应用主成分分析法选用24个指标对我国东南部红壤区生态农业模式了进行综合分析。结果表明：劳均产值、单位耕地产值、人均产值是决定第一主成分的主要指标；氮平衡指数、劳均产值、单位耕地施用农药量是决定第二主成分的主要指标；磷平衡指数、钾平衡指数、人均产值是决定第三主成分的主要指标。综合分析结果是余江的农牧加模式得分最高，为最佳生态农业模式。本研究的综合分析结果可为红壤区生态农业模式选择与发展提供依据。

A STUDY OF ECOLOGICAL AGRICULTURE PATTERN THROUGH THE PRINCIPAL COMPONENTS ANALYSIS IN SOUTHEAST RED SOIL REGION

Twenty-four indexes of agriculture ecological pattern were analyzed with the principal components analytic method to red soil region of southeast of China. The result indicated that, the output value per labour force, the output value of unit field area, the output value per person are the major indexes of the first principal components, the balance index of N, the output value per labour force and the pesticide quantity per unit field area are the major quotas of the second principal components, the balance index of P, the balance index of K and the output value per person are the major indexes of the third principal com ponents. The comprehensive evaluation result indicated the score of the pattern of the farming-animal husbandry-machining in Yujiang is the highest, thus it is a best agricultural ecological pattern. The comprehensive evaluation result has provided the reliable choice and the development basis for ecological agriculture pattern in the red soil region.