Research on the Impact of Aging Rural Population on Agricultural Economy in Heilongjiang Province. Journal of economic and management development research, [S. l.], v. 2, n. 3, p. 14 – 19, 2026. DOI: 10.65196/t8grdq37. Disponível em: https://ojs.gfpress.org/jemdr/article/view/207. Acesso em: 22 mar. 2026.