中文摘要：

契约是双方合意的表示，能够促进合作剩余的产生，而契约形式选择能够对合作剩余的分配、双方预期与权益保障产生深刻影响。随着土地流转规模日益扩大。加强农户的土地流转契约选择研究十分必要。中国正处于转型时期，传统社会规则和现代经济规则会长期并存，农户的契约选择行为可能会受到这一时代背景的影响。因而，农户土地流转契约选择可能兼具经济性和社会性特征。为验证上述判断，本文从差序格局社会关系和利益取向的视角出发，基予贵州省灞潭县、金沙县和施秉县12个乡镇39个村543名土地流转农户的闯卷调查，对农户土地流转契约选择进行了研究。研究结果表明：农户土地流转契约选择受到差序格局社会关系显著影响。当合作方与已身的血缘和地缘关系越远，农户选择书面契约的概率越高。利益取向对农户选择书谣契约有显著的正向影响，当其能够从土地流转中获得货币租金越多时，农户越可能选择书面契约。这意味着农户行为逻辑确实兼具社会性和经济性，受到情义取向和利益取向的双重影响。土地流转契约也并非西方式的“制度信任替代品”，而是糅杂蓿现代性和传统性的中间过渡品。进一步的分析表明，差序格局社会关系和利益取向对土地转出户和转入户的作用存在差异。土地转出户受到差序格局社会关系的显著影响．但利益取向对其影响不明曩。土地转入户受到利益取向的显著影响。但差序格局关系中只有地缘关系依旧显著，而血缘关系没有显著影响。最后，基于上述分析，提出若干政策启示。

英文摘要：

The contract means agreement of both sides, which can generate cooperative surplus. The selection of agreement＇ s form has profound influence on cooperative surplus＇ distribution, expectation between both parties and protection of rights. Thus, with the expanding of Farmland Transfer＇ s scale, the study on farmers ＇ selection of Farmland Transfer agreement＇ s form is necessary. Nowadays, Chinese society had migrated into the transition period, in which traditional social rules and rules of modem economy exist side by side. The choice behavior of farmers＇ agreement＇ s form is possibly affected by this historical background. Therefore, farmers＇ selection of farmland transfer agreement＇ s form also can be affected by economy and society. To prove the estimation mentioned above, the essay has an research on farmers＇ selection of farmland transfer agreement＇ s form by conducting a survey for 543 farmers in 12 towns and 39 villages of Meitan County, Jinsha County and Shibing County from the prospective of the Patter of Difference Sequence and interest orientation. We conclude that the Patter of Difference Sequence has an appreciable impact on the choice behavior of agreement＇ s form. When cooperation partners do not have or have remote blood relationship with them, farmers would trend to choose a written contract. On the other side, interest orientation has a positive influence on the ~hoice behavior of written agreement, which means the more currency and rent they can get, the more possibility they will choose a written agreement. We can see that the farmer＇ s logic combines sociality and economy, which are affected by ties of friendship and interest orientation. Thus, farmland transfer agreement is not the substitution of westem institutional trust, but the transitional product, which mix with traditionalism and modemism. Further analysis showed that the influence of the Pattern of Difference Sequence and interest orientation on roll-in and roll- out farmland are different, roll-out famers a