摘    要：粮食是最基本的生活资料，是人类生存的根本所在，是国家战略安全的基础。保障粮食安全，对于国家安全、社会稳定都至关重要。如今，土地流转政策已实行多年，在粮食安全和农户生活方面取得了巨大成就。但工商资本的下乡、土地用途的改变、流转市场的混乱等现实问题不容忽视。因此本文依据现实问题，结合相关理论和分析，在土地流转的背景下针对性的研究粮食安全问题，诸如土地“非粮化”对耕地面积的影响、过度规模化造成的不经济问题和农业务农人员质量下降问题，并综合以上问题提出加大扶持政策、强化用途管制、培育多元化社会服务体系等意见。

关键词：粮食安全； 土地流转； 规模效应

ABSTRACT：Food is the most basic source of livelihood. It is the basis for human survival and the foundation of national strategic security. Safeguarding food security is crucial to national security and social stability. Nowadays, the land transfer policy has been implemented for many years and has made great achievements in food security and farmer household life. However, the real problems such as the industrial and commercial capital of the countryside, the change of land use and the chaos of the circulation market cannot be ignored. Therefore, based on practical problems, combined with relevant theories and analysis, this paper specifically addresses food security issues in the context of land circulation, such as the impact of land “non-grainification” on arable land, uneconomic problems caused by over-scaling, and the problem of the decline in the quality of farm workers in agricultural operations. In addition, the above issues are proposed to increase support policies, strengthen the use control, and foster a persified social service system.

Key words: Food security;  Land transfer;  Scale effect

目    录

1 绪论 4

1.1 选题背景与研究意义 4

1.2 研究内容与方法 5

1.3 国内外研究综述 6

1.4 本文的创新与不足 8

2 理论基础 8

2.1 理性经济人假设 8

2.2 规模经济理论 9

2.3 比较优势理论 9

3 我国土地流转的现状 9

3.1 土地流转的概念 9

3.2 土地流转的现状分析 10

3.2.1 耕地的流转去向 10

3.2.2 耕地的流转形式 10

3.2.3 耕地的规模生产 11

3.3 土地流转可能产生的风险 12

3.3.1 工商资本的下乡 12

3.3.2 “非粮化”的倾向 12

3.3.3 农村阶层的分化 13

3.4 从经济学角度静态分析流转风险 13

4 土地流转下的粮食安全新问题 14

4.1 粮食安全与土地流转的相关性检验 14

4.2 粮食安全存在的新问题 14

4.2.1 规范不到位，土地浪费严重 14

4.2.2 种植成本增加，加剧“非粮化” 土地流转背景下的粮食安全问题:http://www.chuibin.com/jingji/lunwen_205501.html