黑龙江省农村人口老龄化对农业经济的影响研究. 经济与管理发展研究, [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 3月. 2026.