Sweet potato to keep high yield, cellar is very important, are you ready?

Sweet potato is a common rural planting of a cash crop, not only high yield, and its processed products are also more and more popular, especially in winter that bubbling hot baked sweet potatoes, and wrapped in the wind of the silk aroma, enough to make people salivate, baked sweet potatoes there is a folklore, known as the ''earth ginseng '' reputation, it is said that Qianlong late in life with senile constipation, the doctor tried every means to cure are ineffective, one day, he passed by the imperial kitchen, smelled a kind of aroma, very tempting, they asked the eunuch what is so fragrant, the eunuch was busy kowtowing to answer the '' baked sweet potato '', and handed to Qianlong a piece, Qianlong ate and marveled, even after eating a few weeks, the incurable disease was cured, Qianlong rejoiced ''good potato, merit over ginseng ah''! From then on, sweet potatoes have become a tribute to the court.

Now spring sowing sweet potatoes have been close to maturity, walking in the field, has been vaguely seen sweet potatoes break through the waist of the ridge, also indicates that the fruits of our labor is about to be harvested, but a large number of sweet potatoes on the market, a short period of time is not likely to be sold out, storage and preservation of freshness is the next problem that farmers have to face, due to the new sweet potatoes, thin skin and water, insect eyes, disease spots, mechanical wounds and other factors, to the sweet potatoes storage bring safety hazards. Safety hazards, but also in the storage process will occur in the freezing, physiological diseases and even rot inedible, so we have to harvest sweet potatoes before making sufficient preparations to keep the hard-earned results.

One, timely harvest

Generally speaking, sweet potato does not define the harvest time, most farmers are based on their own judgment and the surrounding farmers to determine the harvest time, although the harvest did not feel any bad place, in fact, early or late harvest of sweet potato storage or have a certain impact.

Sweet potato harvest too early, this period of temperature is generally higher, the sweet potato itself aerobic respiration is strong, can not be sent to the cellar in a timely manner to preserve freshness, high temperature and high humidity leading to the sweet potato appeared a variety of physiological diseases; harvest too late, the weather at night cold, the field of the sweet potato is very susceptible to freezing, unsuitable for storage and preservation.

Sweet potato harvesting should be based on not sweet potato different uses, different situations are treated separately.

1, look at the temperature

Sweet potato normal growth temperature of 20 ℃ ~ 30 ℃, generally when the temperature drops to 12 ℃ will stop growing, so when the daytime temperature is close to 12 ℃ can be harvested in time.

2, look at the purpose

Farmers planting sweet potatoes for different purposes, some need starch to play fans, some need to keep seeds, but also for food, harvesting time for people disagree.

Generally speaking, the spring potato is mainly processed, sun-dried or starch, can be harvested in early October, this period of high yield, good weather, easy to process; stay in the seed sweet potato must be considered can not be subjected to frostbite, can not be harvested early, the high temperature is not easy to store, can be selected in mid-October around the harvest; direct consumption of sweet potatoes on the random, after mid-August can be marketed or eaten.

II, safe harvesting

Sweet potato is long in the ground, eyes can not see, only by feel digging, inevitably digging injury, so the harvest should be light planing, along the roots of the sweet potato, with the hands of the surrounding soil pick away, probably judge the location of the sweet potato, with the grasping hooks gently planing the waist of the ridge, the sweet potato reveals most of the time when the hand can be used to assist in the earth to be light to take, light, and in the process of transporting the bumps and bruises to be careful, try to minimize mechanical wounds and friction wounds of the sweet potato. The sweet potatoes should be transported with care to minimize mechanical wounds and friction wounds.

Because the sweet potato is very easy to germinate or rot in water, so we should choose to harvest in the sunny days, sticky heavy land can be appropriate to half afternoon in the harvest, minimize the sweet potato out of the soil with mud, if the soil is wet, not conducive to the sweet potato harvest, you can cut off the sweet potato vines, drying two days in the harvest, the sweet potato for the morning after harvesting to stay in the seed in the afternoon to pick a good day into the cellar storage.

Three, safe cellar

Newly harvested sweet potatoes can not immediately enter the cellar, because the cellar for a long time, once the disease sweet potatoes into the cellar, will soon be infected throughout the cellar potatoes, so it must be carefully selected, should be picked up manually in addition to the disease potatoes, injury potatoes, cracked potatoes, frozen potatoes, sprouting, insect bites, rain and other sweet potatoes, for some of the sweet potatoes is best to do the treatment of the healing process and then into the cellar storage.

Because the sweet potato cellar is relatively closed to the outside world, and the initial outside temperature is high, the cellar sweet potato is very easy to get sick and rot, so we have to use different methods based on different stages of freshness.