Influence of Land Management Scale on Farmers'Fertilizer Input
Based on the mechanism analysis of the impact of land management scale on farmers'fertilizer input,combined with the survey data of corn farmers in Haizi village,Guji Town,Hezhang County,Guizhou Province,the influence mechanism of land management scale on farmers'fertilizer input was explored using OLS measurement method.The results showed that:overall,the scale of land management had significant negative effects on farmers'fertilizer input.Specifically,there was a U-shaped relationship between the scale of land management and the fertilizer input of farmers.The fertilizer input of farmers presented a trend of"first decreasing and then increasing"with the expansion of the land management scale.When the land management scale was 0.76 hm2,the fertilizer input of farmers were the lowest.In addition,improving farmers'education level,joining cooperatives,receiving technical training related to fertilization,reducing the degree of land fragmentation,and improving soil quality were factors contributed to the reduction of farmers'fertilizer input.Accordingly,the local government should encourage and guide farmers to appropriately expand the scale of land management;give full play to the role of cooperatives and strengthen fertilization related technical training;strengthen the input of land protection and improve soil quality,so as to achieve the effect of reducing the input of fertilizer.