中文摘要：

规模化经营克服了我国农地小规模经营的弊端,是现代农业的基本要求。但我国土地流转过程中,土地细碎化问题在不同规模农户中仍普遍存在,导致我国土地规模经济难以显现。在农户调研数据基础上,利用超越对数（Translog）函数分析了不同农户经营规模与小麦产出效益的关系。结果表明：我国小麦生产在物质要素投入上存在规模经济效益,并主要在家庭经营1 000亩以上的农户才能体现;但土地细碎化对粮食生产规模经济的实现具有制约作用。

英文摘要：

The scale operation of agricultural land has overcome the disadvantages of small-scale operation, which has become the basic requirements of modern agriculture. However, land fragmentation problems existed in all kinds of growers, including large-scale growers;the benefits of large-scale operation of land are not very obvious. In this article, the author uses Translog Model to analyze the relationship between the farmers of different size and wheat output efficiency based on the household survey data. The results show that the wheat production of China has scale economics in the capital investment and has been primarily reflected in the rural households who own more than 1 000 acres of agricultural land. Meanwhile, there is a moderate scale problem in China＇s grain production.