US Patent 10321696 Vegetable preservation and growing case and vegetable preservation method

A ecological vegetable preservation method and an ecological vegetable preservation and growing case. The method includes circularly supplying a nutrient solution to a vegetable in a thermal insulation case body, and regulating temperature, humidity and/or illumination in the thermal insulation case body, so that the vegetable in the thermal insulation case body stays in a growth-retarded state or a slow growth state. Application of the present method and ecological vegetable preservation and growing case allows the growth state of the vegetable to be controlled, thus ensuring to the greatest extent the freshness of the vegetable.