Harvest and storage of pomegranate

The signs of pomegranate fruit maturity are: fruit edge appearance, pericarp from green to yellow, fruit surface appears luster. The red or silver-white needle awns in the flesh cells are fully displayed. In northern production areas, the autumn equinox to cold dew between the harvest period. Early picking, poor flavor, poor storage resistance. Pomegranates in the south should be first harvested for flowers and fruits, large fruits, and later harvested for late maturity.

When picking, diseased fruits and cracked fruits should be picked by special personnel and treated intensively to prevent the spread of disease infection. When picking in rainy days, the fruit calyx tube is easy to accumulate water, which is easy to cause pathogen invasion and rot. Therefore, it should be picked in sunny days. When harvesting, one hand holds the branches, the other hand picks the fruit, picks gently, prevents the pomegranate fruit to receive the mechanical damage. When the fruit is squeezed and internal injury occurs, it cannot be seen from the appearance, but in the process of storage and transportation, the broken juice will affect other unbroken seeds and make them deteriorate.

Late-maturing varieties are better stored. The varieties with good storage resistance include: Dahongtian, Jingpi Tian, Tianhongdan and Sanbaitian pomegranate in Shaanxi Province; Qingpi Tian, Damayatian, Dahongpi Acid, Yuhuangdian pomegranate, Qingpi Acid, Gangliu Tian and Ma Ya Acid in Shandong Province; Qingpi Tian and Crystal Ginger Ma Liu in Shanxi Province; Jiangyi pomegranate, Tongke pomegranate and Qingke pomegranate in Yunnan Province; Daqingpi pomegranate in Sichuan Province; Shenwo pomegranate in Guangdong Province, etc. Not resistant to storage varieties of Anhui's jade pomegranate, Yunnan Mengzi sweet pomegranate, etc.

After fruit harvest, should eliminate disease, injury fruit and cracked fruit, may have internal injury fruit should also be picked out early, immediately sold. For sound and undamaged fruits, according to their single fruit weight classification, respectively for foreign trade, export and local sales as processing materials.

soak fruit in 1000 times solution of jujube peel pomegranate preservative No. 2, 1000 times solution of 50% carbendazim or 800 - 1000 times solution of 45% saijunling suspension for 3 - 5 minute, and storing pomegranate after drying. When the storage volume is large, the above agents can be sprayed onto the fruit surface by spraying, dried and stored.

Pomegranates are thermophilic, and the basic requirements for storage are appropriate temperature and high humidity. 0℃ is cold injury, and the optimum temperature is 4℃~5℃.

For hanging fruits, a section of fruit stalk should be reserved when harvesting, tied into strings with strings, hung in cool houses; or wrapped in newspapers and plastic films, hung indoors with small changes in temperature and humidity, and stored until around the Spring Festival.

You can also choose a new jar or jar, spread a layer of fine sand or wheat straw about 5cm thick on the bottom layer, pre-store pomegranate for three days in a cool and ventilated place (pomegranate has been treated with fungicide before pre-storage), layer by layer into the container, until full. The jar mouth or jar mouth shall be sealed with plastic film and inspected once a month after tightening. If there is rotten fruit, it shall be removed in time. This method can be stored until April of next year.

The precooled and germicide treated pomegranate is put into a polyethylene plastic bag, tied up, and stored in a cool room for 140 days. The pomegranate fruit is still fresh. Can also be treated by fungicides pomegranate fruit with plastic bags single fruit packaging, this fruit in 3℃~4℃ storage conditions for 100 days, fruit freshness is good.

On the floor or earthen building without smoke and dust influence, a layer of fresh pine needles is placed on the floor or the bottom of the cabinet, a layer of pomegranate is placed, and then a layer of pine needles is laid. Such a layer of fruit and a layer of pine needles alternately stacked storage, pile top cover pine branches, straw and other mulch, every half a month to check the pile, remove rotten fruit and replace pine needles once. The storable varieties can be stored until April and May of the following year by this stacking method. Pay attention to the fruit pile before storage, be sure to wash the peel with water first, pre-cool.