Preservation method of chestnut in sand storage

A, sand storage method:

Outdoor trench (pit) storage. Choose a well-drained site and dig a ditch with a width of 1m, a depth of 60cm and an unlimited length. After leveling, lay a layer of wet sand (water content 30-35%) on the bottom of the ditch, put a layer of chestnuts, and layer by layer in turn. Each layer of sand chestnut is about 5-6 cm thick. Top sand distance from pit surface 10 cm. You can insert straw into the pit for ventilation, and finally seal the soil into a roof to prevent rainwater from infiltrating.

Second, storage with bracts:

Choose a well-drained site, lay 10 cm thick sand on the ground, and pile bracts in the open air. The size of the pile can be changed, but the maximum is not more than 1 m, and it is easy to heat up if it is too high. Cover the pile with stalks. Pay attention to check. If the pile is hot or dry, it can be properly splashed with water to cool and moisturize. This storage method is simple and labor-saving, and the storage period is long, and it can be stored until March-April of the following year, but chestnuts stored with bracts are easy to germinate. If the bracts are damaged by weevils, it is not easy to use this method, because the storage humidity is high, which is conducive to weevil activities.

Three, plastic film account or film bag storage:

Normal and mature chestnuts can be stored in film tents or perforated film bags after sweating and heat dissipation 1 month. Film bags can be placed in bamboo cages, wastebaskets or wooden cases. In order to prevent mildew, the fruit should be washed before bagging, soaked in 500 times of Tobezin solution for a few minutes, dried and bagged. The suitable capacity of the film bag is 25 kg, the film thickness is 0.05 mm, and holes with a diameter of 2 cm are punched on both sides of the bag, and the hole spacing is 5 cm. If non-porous bags are used, they should be inspected at any time to facilitate ventilation and moisture dissipation. When the temperature is high and the humidity in the bag is too high, the Qin Ying should be checked to reduce rot, germination and weightlessness.