关键词: 畜牧业, 机械化水平, 畜牧业产出, Morans I指数, 中介效应模型

Abstract: In order to explore the impact mechanism of livestock mechanization on livestock output, this study used spatial autocorrelation test, fixed effect model and mediating effect model to analyze the impact of livestock mechanization on livestock output based on the panel data of livestock industry in 31 provinces (municipalities, autonomous regions) from 2001 to 2020. The empirical results showed that the level of mechanization and output of animal husbandry in all regions showed an upward trend, and the level of mechanization and output in pastoral area was lower than that in other areas. The output of animal husbandry did not pass the spatial autocorrelation test, indicating that the mechanization of animal husbandry had no spatial spillover effect on the output of animal husbandry. Animal husbandry machinery, forage processing machinery, animal husbandry feeding machinery and animal product collection and processing machinery all had significant positive promoting effects on animal husbandry output. Forage processing machinery and animal husbandry machinery could promote the output of animal husbandry by expanding the scale of animal husbandry, which had partial mediating effect. The mechanization of animal husbandry could increase the income of herdsmen by increasing the income of animal husbandry, which showed a complete mediating effect in pastoral areas and a partial mediating effect in semipastoral areas. The industrial structure of animal husbandry, urbanization rate, fixed capital input of animal husbandry and per capital disposable income of urban residents had significant positive effects on the output of animal husbandry. The higher the development level of animal husbandry, the higher the income level of animal husbandry employees. Therefore, in view of the relatively backward development level of animal husbandry in the western region , we should increase the investment and construction of the animal husbandry machinery in the western region and improve the mechanization level of the animal husbandry in the western region. We should accelerate the overall improvement of the mechanization level of animal husbandry in various regions and promote the highquality development of animal husbandry.  We should raise the development level of animal husbandry and promote the increase of income of animal husbandry employees. We should  develop new animal husbandry machinery and equipment to realize the modernization of animal husbandry.

Key words: animal husbandry, level of mechanization, livestock output, Morans I index, mediating effect model