Based on a comprehensive survey, in a context of intensive agriculture in wet and drained Brie, the article tracks the way in which the discussion of two technical objects (the drainage system and artificial wet buffers) is organised. It examines how these objects are "brought" to these territories by public authorities and scientists and what they reveal about the representations and values attached to both technology and nature. The work shows that new paradigms of public action are certainly emerging, based on the expression of new social (particularly through the imperative of participation) and environmental expectations. The adoption of these objects, however, similarly shapes a form of confidence in technology and a desire to control nature.