烟叶生产每年种植季节开始，越南国家烟草专卖局（Ｖｉｎａｔａｂａ）的烟叶公司、卷烟生产商和几家较小的私营烟叶公司就与烟农签定合同，烟农提出各种投资计划，然后再提出烟叶的最高要价。通常，购销商为烟农提供种子、肥料、杀虫剂和技术咨询等，最后从烟叶销售收入中... Tobacco leaf production begins every year. The leaf tobacco company of Vietnam National Tobacco Monopoly Bureau (Vinataba), cigarette manufacturers and several smaller private tobacco companies have signed contracts with tobacco growers. Tobacco growers propose various investment plans and then propose tobacco leaves. The highest asking price. In general, purchasers and distributors provide seeds, fertilizers, insecticides, and technical consultations to tobacco farmers, and finally from the sales revenue of tobacco leaves...