在 7a旱地玉米保护性耕作试验研究基础上 ,根据山西省寿阳县农业生产的各种投入和农产品价格 ,对比分析了保护性耕作技术和传统耕作的经济效益。结果表明 ,保护性耕作不但能够增产、增收 ,减轻劳动强度 ,而且机械投资回收期为 2 a～ 3a,低于机械化传统耕作的投资回收期。经济效益的分析将有利于保护性耕作的推广应用。 Based on the experimental study of maize conservation tillage in the dry land of 7a, the economic benefits of conservation tillage technology and traditional farming were compared and analyzed according to various inputs of agricultural production and prices of agricultural products in Shouyang County, Shanxi Province. The results showed that conservation tillage not only increased production and income, but also reduced labor intensity. The payback period of mechanical investment was 2 a ~ 3 a, which was lower than the payback period of mechanized traditional farming. The analysis of economic benefits will be conducive to the promotion and application of conservation tillage.