What is the storage temperature of sweet potatoes in winter Are sweet potatoes afraid of freezing an

There are roughly two ways to store sweet potatoes, namely high-temperature storage and low-temperature storage.

1. The high-temperature storage method is to heat up the sweet potatoes to 35-38 after they are put into the cellar, and keep them for 2-3 days to kill the black spot and soft rot and other bacteria of the sweet potatoes. Then reduce the temperature to 10-14 low for storage.

The effect of this method is very good, but the cost is high and the operation is more troublesome, so the low-temperature storage method of pharmaceutical treatment is more suitable for farmers who store separately.

2. Use the low-temperature storage method, and first disinfect the potato cellar one week before the sweet potato is put into the cellar. The cellar can be sprayed and disinfected with 70 of Tobuzin 1000 times or 50 of carbendazim 800 times. Second, after the sweet potato is harvested, it should be processed in time and put into the cellar in time.

You can use 70 Tobuzin 1000 times solution, or 50 carbendazim 800 times solution, soak the sweet potatoes in a ratio of 1:1, and then remove the drops and dry them into the cellar.

Third, after the sweet potatoes are put into the cellar, various methods are used to keep the temperature in the cellar below 15 and above 10. The temperature in the cellar is lower than 15, which can inhibit the activity of germs, and higher than 10, which can avoid freezing damage and achieve the purpose of safe storage.

Temperature: The best temperature for indoor storage is between 9 and 15 °C, above or below which it is easy to rot or germinate.

Temperature: The humidity of sweet potatoes is about 80% to 90%, and they are easy to rot and cause pests and diseases.

Air: The oxygen content in the composition shall not be lower, otherwise it is easy to lead to anoxic respiration of potato pieces, loss of germination ability, hypoxia and rotting.

Sweet potatoes are afraid of freezing, and if the temperature is too low, they can easily rot and spoil. The best storage time for sweet potatoes is between 10 and 14. There are roughly two ways to store sweet potatoes, one is high-temperature storage and the other is low-temperature storage.

The high-temperature storage method is to heat up the sweet potatoes to 35-38 after they are put into the cellar, and keep them for 2-3 days, wait until the various germs on the sweet potato pulp are killed, and then reduce the temperature to 10-14 low temperature for storage.

The low-temperature storage method is to disinfect the sweet potatoes one week before they are put into the cellar, and after the sweet potatoes are harvested, they are put into the cellar in time. After entering the cellar, various methods are used to keep the temperature of the whole cellar below 15 degrees and above 10 degrees, so that the sweet potatoes can avoid frostbite and at the same time can also play a safe storage purpose.

In daily life, we should also pay attention when selecting sweet potatoes, we must see whether the surface of the sweet potatoes is moldy, and whether there are gaps. If the surface of the sweet potato is moldy or chipped, it is likely that the sweet potato has gone bad.

When buying sweet potatoes, it is best to pay attention to the color of the sweet potato, from the color of the sweet potato you can judge whether the sweet potato is fresh, fresh sweet potato is more delicious. If you don't eat fresh sweet potatoes in your stomach, it can easily cause health effects.

Sweet potatoes are stored at temperatures between 10 and 14, and there are roughly two ways to store sweet potatoes, namely high-temperature storage and low-temperature storage. 1. High temperature storage method The high temperature storage method is to heat up to 35 to 38 after the sweet potatoes are put into the cellar, and keep them for 2 to 3 days to kill the black spot disease, soft rot and other bacteria of the sweet potatoes, and then reduce the temperature to 10 to 14 and store them at low temperatures. 2. Low temperature storage method Low temperature storage method disinfects the potato cellar one week before the sweet potato is put into the cellar, and then after the sweet potato is harvested, it can be put into the cellar in time, and 70% of the tobuzin 1000 times can be used, or 50% carbendazim 800 times the solution, press 1:

1 ratio, the sweet potato is soaked, and then the drop is dried into the cellar, after the sweet potato is put into the cellar, various methods are used to keep the temperature in the cellar below 15, above 10, and the temperature in the cellar is lower than 15, which can inhibit the activity of germs, higher than 10, can avoid freezing damage, and achieve the purpose of safe storage.

Buy back sweet potatoes, fresh skin, can not be put into a bag, otherwise it is easy to rot, to put it on the balcony, spread out, let it ventilate, bask in the sun for 2-3 days, because the moisture of sweet potatoes is higher, this can not only reduce the moisture of sweet potatoes, improve its sugar content, but also repair some damaged parts, drying this is very important, dried sweet potatoes are not easy to germinate and not easy to perish. If the skin of sweet potatoes is broken, it is easy to rot and mold, and it will also affect the storage of other sweet potatoes, so it is necessary to pick them out and eat them in advance.

Hope it helps.

Sweet potato winter storage temperature: The temperature during storage should be 10 15. If the temperature is too low, below 9, it is easy to be cold, and if the temperature is too high above 15, it is easy to germinate and affect storage.

The optimum temperature should be 11 12. The humidity of storage is generally maintained at 85% to 90%. If the humidity is too high, the germs will multiply quickly and be perishable; If the humidity is too low, there will be a lot of water loss, which will affect the quality and germination ability of the potato pieces.

It has been determined that when 02 and CO2 in the air are 15% and 5% respectively, it can inhibit respiration, reduce the consumption of organic nutrients, and increase the storage time of sweet potatoes. When the O2 is less than 5%, the sweet potato undergoes anaerobic respiration and rots.

It turns out that it is so simple to preserve sweet potatoes in winter, and they do not sprout or rot for a long time, which is so talented.

The suitable temperature for sweet potato storage is 10 14, the temperature is too low to suffer from cold injury, so that the inside of the potato lump turns brown and black, there is a hard core and peculiar smell after cooking, and it is very perishable in the later stage. When the temperature is too high, the potato sprouts begin to germinate and chaff, accelerating the development of black spot and soft rot.

Sweet potatoes are prone to germination when not stored properly. If the storage environment is too humid or the indoor temperature is relatively high, it will have a negative impact on the normal storage of sweet potatoes. Freshly bought sweet potatoes usually have muddy skins and should be placed in a ventilated place to dry.

The process of drying sweet potatoes is also a process that accelerates their internal saccharification, which can make the sweet taste of sweet potatoes more sweet. After the sweet potato is dried, we need to put it in a box with good air permeability, and it is best to put a few pieces of cardboard at the bottom of the box to keep out the moisture. Do not seal the opening of the box, and leave a gap to ensure that the inside of the box is fully ventilated.

Do not use plastic bags and other breathable materials to pack sweet potatoes, and it is not recommended to wrap or lay the newspaper in a cardboard box, so as to avoid the ink of the newspaper falling off after being damp, which is easy to contaminate the sweet potato. Do not store fresh sweet potatoes in the refrigerator, as moist moisture in the refrigerator can cause sweet potatoes to rot and sprout prematurely.

There is a very headache problem, that is, the sweet potatoes or potatoes bought are not easy to store and are very easy to rot, is there any way to avoid this? It's cold, it's a good season to eat sweet potatoes and potatoes, do you know how to preserve them? Here are a few of the easiest ways to ensure that the two ingredients you buy are both easy to preserve and fresh.

First, if the sweet potato we bought back, if the moisture is relatively sufficient, then we must put the sweet potato at home to dry for 2-3 days, keep the temperature at 24-27 degrees Celsius, and keep the sweet potatoes from touching each other. Doing so reduces the moisture content of the sweet potato, creating a second layer that keeps the sweet potato longer"**"It is better to store, it will not be rotten and sprouted, and it will be sweeter when eating.

The second is that when preserving sweet potatoes, the soil on the sweet potatoes must not be washed away with water, because the remaining part of the soil can also act as a protective layer for sweet potatoes, which can play a role in prolonging the preservation time of sweet potatoes.

How to preserve sweet potatoes

We prepare a cardboard box or wooden box, and cannot use an airtight container. Then find some useless newspapers or kraft paper bags, because newspapers and kraft paper are relatively breathable, which can ensure air circulation and reduce the rate of rotting of sweet potatoes. Spread the paper on the bottom layer of the carton and put some paper to keep the inside of the box dry.

Then put the sweet potatoes in, and then put a layer of paper after placing 1-2 layers of sweet potatoes, which is also to ensure the air permeability of the inside of the box. We put the sweet potatoes in turn, and after they are placed, we can also put an apple in the box, which helps to prevent the sweet potatoes from sprouting.

We put the carton in a dry, cool, well-ventilated place so that it is fine. The best temperature for storing sweet potatoes is between 13-16 degrees Celsius, and if it is too cold, it may freeze the sweet potatoes, so remember not to store them in the refrigerator. And this box is best left unsealed to prevent the sweet potatoes from rotting and sprouting inside.

It is best not to wash sweet potatoes, store them with puree, the temperature is preferably about 15 degrees, and do not put them in a humid but ventilated place.

It is generally best to store in a cool, dry place. Of course, it is best to put it in an airtight bag first. Generally the optimal temperature is between 10 and 20 degrees.

If it is stored at high temperatures, it is recommended that it can be kept at 35 to 38 degrees for 2 3 days, and if it is stored at low temperatures, it is recommended to store at 1 15 degrees, and the low temperature storage time will be longer.

Now that the sweet potatoes have been harvested, if they are not stored well in winter, the sweet potatoes are easy to rot and deteriorate, so there will be a big loss. It turns out that farmers store sweet potatoes and dig a sweet potato cellar underground, and now this method is actually very practical, and the preservation effect is also good, but there are still some matters to pay special attention to in the preservation process. Otherwise, it will cause rotten, so what are the practical ways to keep sweet potatoes longer?

Reasons for rotten cellars: First, cold damage. It means that the tuber is at a low temperature below 9 for a long time, and the metabolic activity is disrupted. Generally, it is easy to produce chilling injury in 10 days at cellar temperature of 8-9, or 6 days under cellar temperature of 5-6, or 3 days under cellar temperature of 2-3.

The second is frost damage. When the temperature drops, it is easy to cause frost damage. After being frosted or cold-damaged, it is easy to cause the invasion of germs and cause a large number of rotten cellars.

The third is moisture damage. At the beginning of storage, the temperature is high, the potato body respires vigorously, the water vapor in the potato pile rises, and condenses into water droplets when cold, which is easy to rot the potato body due to moisture.

Fourth, diseases. There are four main diseases that cause rot during storage: black spot, soft rot, dry rot and nematode disease.

Comprehensive measures to prevent and control rotten cellars:

Sweet potato harvest should be mastered in the local average temperature drop to 14-15 is appropriate, generally in early November around the beginning of winter, harvest on sunny days. During operation, it is necessary to pay attention to fine collection and transportation, and try to prevent digging, abrasion, and collision.

Before entering the cellar, scrape off the old soil on the cellar wall and apply it with lime mortar.

The bottom of the cellar is shoveled with 15 cm of old soil, and after the old soil is removed, a layer of lime is sprinkled and the cellar is smoked with sulfur. Use 50 grams of sulfur per cubic meter, close the cellar and smoke for 1-2 days after ignition, and then open the ventilation hole. The cellar is sprayed with 1 copper sulfate solution or formaldehyde 50 times the solution, and formaldehyde can also be mixed with potassium permanganate for closed fumigation.

After the sweet potatoes are put into the cellar, do not seal the cellar too early, pay attention to ventilation and heat dissipation, prevent the cellar from burning, and maintain a temperature of 15-20 and a relative humidity of 90.

After the winter solstice, the cold wave is frequent and the temperature is low, so it is advisable to pay attention to heat preservation and cold protection, so that the pile temperature in the cellar is kept at about 12-13. After the beginning of spring, the weather is cold and hot, and the temperature is changeable, and at this time the sweet potatoes begin to germinate, the resistance is weakened, and they are easy to rot, so when the weather warms, it should be ventilated and cooled down in time.

Pre-storage requirements.

In the field, the temperature of the sweet potato tubers must be above 20 during the expansion period. Below 15, the sweet potato stops growing. Therefore, when the temperature drops to 15, it is the best time to harvest sweet potatoes.

The harvest was too early, the temperature was too high, and it could not be put into the cellar in time after harvesting. If the harvest is too late, it is susceptible to freezing damage from low temperatures at night, which increases the difficulty of storage.

When harvesting potatoes, they should be dug gently, transported lightly, and put away gently to prevent them from being infected by pathogenic bacteria and causing rot after being broken. Sweet potatoes should be treated for wound healing immediately after harvesting. That is, it should be placed for 4 6 days under the conditions of air temperature 30 35 and relative humidity of 90% 95%, and adequate ventilation should be maintained.

This work is best done in the sweet potato storage area to prevent the second movement and re-trauma.

Storage conditions. 1) Temperature The suitable temperature for sweet potato storage is 10 14, the temperature is too low and will suffer from cold damage, so that the inside of the potato lump will turn brown and black, and there is a hard core and peculiar smell after cooking, and it is very perishable in the later stage. When the temperature is too high, the potato sprouts begin to germinate and chaff, accelerating the development of black spot and soft rot.

2) Humidity When the humidity in the cellar is lower than 80%, the water in the potato pieces will evaporate, resulting in dehydration, wilting, shrinkage, chaff, and the eating quality will deteriorate. When the relative humidity exceeds 95%, the tubers will fade and brown, pathogenic bacteria will multiply, and the rot rate will increase. If the water content of sweet potatoes exceeds 70% when they are put into the cellar, the cellar should be opened for ventilation and dehumidification to cool down.

If the sweet potato pieces are stained with water in the field for more than 3 days, they can only be used for feeding pigs or milling, and cannot be stored in the cellar.

Fresh sweet potatoes must be dried and then preserved, so that they will be oily when eaten.

Method 1: Carton preservation method, do not throw away the clean carton of food at home, used to preserve sweet potatoes moisture-proof and anti-rotten, especially practical.

Don't wash the sweet potatoes you bought, put them neatly in a carton, cover it with a layer of plastic wrap to prevent moisture, be careful not to put the broken sweet potatoes in, it is easy to rot, put it in a cool and ventilated place after sealing, and it will not be bad if you put it for half a year.

Method 2: Net bag preservation method, compared to cartons, net bags may not be available in every family, if there are at home to preserve sweet potatoes is very good. Put the sweet potatoes in a mesh bag, be careful not to bump them, and put them in a cool and ventilated place, sweet potatoes are not afraid of heat and cold, so do not put them in the refrigerator to preserve, so they are easy to sprout and rot.

Method 3: Sand preservation method, suitable for friends who have a yard or live in the countryside, dig a hole in the yard, spread sand, put in the sweet potato, and then cover the surface with a layer of sand, so as to preserve the sweet potato, eat until the spring of the next year is also fresh, there is no yard can be saved with a flower pot, covered with sediment, can also be kept for half a year without damage.