The article explains the significance of large agricultural enterprises (corporations) and small forms of management (households) in ensuring the food security of Ukraine, employing rural population and developing rural areas, as well as the advantages of small business to corporations. It is stated that corporations and small agribusiness should develop in parallel, building close economic relations, which need constant improvement. The author notes that development of integration processes in the agrarian sector is one of the promising directions that will promote the efficiency of agricultural production. Small commodity producers are interested in this kind of relationship, since integration gives them guarantees regarding provision of work and marketing of manufactured products. While implementing the integration relations households are provided with means and objects of labor, seeds, planting material and feed, technological support and guarantees regarding selling manufactured products. The article describes the models of attracting households to integration relations in the agrarian sector of Ukraine: production contracting, mini-cluster model, cooperative model, cooperative-integrated model. Including small business in a cluster model of the agrarian market will create objective conditions for improving the efficiency of its management. Having large production facilities, agro-corporations can purchase agricultural products from small enterprises on the basis of contracting for further processing (freezing, drying, etc.) and sales. Suggested models and mechanisms of interaction between large and small agribusiness will increase the efficiency of organization of their activities, as well as promote the development of rural areas.