This study intends to build a theoretical mechanism of agricultural socialization services for the eco-efficiency of agricultural land use from two paths. namely the agricultural division of labor and technological progress. and empirically calibrate the Tobit model based on the data of the China Family Tracking Survey (CFPS) for 4453 farming households in 23 provinces (autonomous reg... https://foldlyers.shop/product-category/first-aid-kits/