This study aims to provide empirical evidence for the relationship between farmland abandonment and food security from perspective of agricultural productivity. Specifically, based on 4,850 farmer households in hilly mountainous areas rural China, this uses endogenous switching regression (ESR) method solve problem self-selection farmers’ decision-making quantitatively examines impacts finds th...

A self-propelled crawler and potato harvester was designed, with the terrain characteristics of both hilly mountainous areas considered, to address low degree mechanization, markedly harvesting rate, high labor intensity in areas. The could complete tasks digging potatoes, separating them from soil, transporting collecting a single operation. Finite element analysis conducted on major parts, su...