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Comparative Analysis of Cropping Systems: An Exploratory Study of 14 Rainfed Sites in the Philippines

机译：种植制度比较分析：菲律宾14个旱作地的探索性研究

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The adaptation of cropping systems to the environment has been identified as a vital need. This study discusses the use of various multivariate statistical techniques to examine cropping system--environment interactions. Data, collected at 14 sites in four agroclimatic zones in the Philippines, were analyzed using tabular analysis, multiple regression, factor analysis, and discriminant analysis techniques. All techniques showed that biophysical factors are the dominant influence determining the number of crops grown in sequence and the duration of land use by crops, while farm-level socioeconomic variables are less influential. The study showed that the complexity of components within farming systems makes it necessary to use multivariate statistical techniques to understand the underlying relationships. Single equation multiple regression models, while inadequate by themselves, can be used to understand how site-level factors are combined with farm-level system characteristics.

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