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<p>This paper uses the farmer household’s model to structure the analytical framework of concurrent business cultivated land use behavior and its efficiency and then uses group comparison analysis and data envelopment analysis (DEA) to analyze the diversity of cultivated land use behavior and efficiency, among different types of concurrent business farmer which is based on the promise of separation not established and investigation data of farmer household. The results demonstrate that the concurrent business types have a significant influence on utilization patterns and farmer household’s behavioral options, different types of farmers’ investment, management and land scale have a big difference. Generally speaking, capital and labor input of concurrent business farmer household are high than that of specialized farmer, concurrent business farmer household Class ? are higher than that of Class ?; and different utilization patterns lead to the difference of cultivated land use efficiency. Moreover, technical efficiency of specialized farmer household is higher than that of concurrent business farmer household Class ? based on the separation was not established, and both of them are higher than that of concurrent business farmer household Class ?. That illustrates land use efficiency of farmer household will reduce as the level of concurrent business increase.</p

The Study on Effects of Concurrent Business on Cultivated Land Use Efficiency -Based on Empirical Analysis of Gansu and Qinghai Province