Low temperature resistant sweet potato storage cellar and application

Abstract

The invention relates to a low temperature resistant sweet potato storage cellar and application. The storage cellar comprises a cellar chamber and a tunnel, wherein the cellar chamber is positioned under the ground; the tunnel is positioned on the ground; the cellar chamber is an inverted trapezoid earth ditch which has a wider upper part and a narrower lower part; two side walls of the cellar chamber in a length direction incline inwards; a ventilation opening and a goods delivering opening are formed on the side surface of the tunnel; goods delivering steps are arranged on one side inside the cellar chamber; both ends of the cellar chamber in the length direction are provided with an inlet respectively; and each inlet is provided with a fire wall inside which a flue is formed. The storage cellar overcomes the defects of poor thermal insulation property, high internal humidity and difficult ventilation of a well cellar, and has the advantages of low cost, high storage capacity, easyoperation and suitability for popularization and application.

Description

technical field [0001] The invention discloses a low-temperature-resistant sweet potato storage cellar and its application, belonging to the technical field of agricultural product storage in food engineering. Background technique [0002] Sweet potato, also known as sweet potato, sweet potato, sweet potato, sweet potato, sweet potato, etc., is one of the main crops in my country's grain production and is widely planted from northeast to southwest my country. The phenomenon of rotten pits is prone to occur during the storage of sweet potatoes. The main reasons are summarized as "five harms and one deficiency". Sweet potatoes love temperature and are afraid of cold and damp. The suitable storage temperature is 10-14°C and the relative humidity is about 80% (there are differences among varieties, Jishu 18 should be higher than 75%, and Jishu 22 should be lower than 80%). Chilling damage is prone to occur at temperatures below 10°C, and sunken plaques appear on the epidermis, ...

AI Technical Summary

Problems solved by technology

However, the above sweet potato cellars have the following technical deficiencies: in the initial stage of well cellar storage, due to the high external temperature, it is easy to cause moisture damage in the cellar, and it is difficult to transport sweet potatoes. The respiration of the potato pieces is strengthened, which reduces the oxygen in the cellar, and the CO 2 When it reaches 4-5%, the respiration is inhibited, causing the potato pieces to rot due to lack of oxygen; large cellars on the ground or semi-underground require thick walls, thick roofs, tight structures and heating equipment, and high construction costs; greenhouses The construction of the cellar also requires a storage room surrounded by four walls, an arch shed, and two walls on the front and back, and it is difficult to keep warm in low temperature areas. Therefore, the cost performance of the greenhouse cellar is low and it is not suitable for popularization and application.

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