农地流转对粮食生产和粮食安全有着重要的影响，但农地流转促进粮食增产吗？利用“脱钩”的理论，建立“脱钩”方程以湖南省为例进行实证分析，结果表明：2005—2016年，湖南省农地流转与粮食产量之间存在脱钩关系，基本态势为扩张性负脱钩型，但是2010、2013和2016三年表现为强负脱钩型，而2007年为强脱钩型。可以说，农地流转并没有实现预期的粮食增产目标，原因包括：农地流转市场信息不对称，流转效率和效益较低；农地流转存在“小农复制”，没有实现规模经营；农地流转带来“非粮化、非农化”；与农地流转相适应的社会化、组织化服务水平低。

Agricultural land transfer has an important impact on grain production and food security, but whether it promotes the grain production or not is still unclear. This paper analyzes the relationship between agricultural land transfer and grain yield using the theory of "decoupling" and the survey data in Hunan province. The results show that: from 2005 to 2016, there was a decoupling relationship between agricultural land transfer and grain production in Hunan province, and the basic trend was expansionary negative decoupling, in 2010, 2013 and 2016, it showed strong negative decoupling, while it showed strong decoupling in 2007. It can be said that the transfer of agricultural land has not achieved the expected goal of increasing grain production. The reasons include: the information asymmetry in the transfer market of agricultural land, the low efficiency and profit of the transfer; the lack of scale management caused by "small-scale reproduction" existing in the transfer of agricultural land, which has not realized scale management; the "non grain and non agriculture" caused by transfer of agricultural land; the low level of socialized and organized services corresponding to the transfer of agricultural land.

F321.1；F326.11