What temperature is suitable for sweet potato growing?

16 - about 20°.

The suitable temperature of sweet potatoes is about 20 degrees, and sweet potatoes are also known as sweet potatoes.

Sweet potatoes need to be raised 2 months before transplanting and planting, that is, spring potatoes start to raise seedlings in late January, autumn potatoes in mid to late June, and early winter potatoes in early to mid August. Seedlings can be raised at one time or propagated in separate batches.

Sweet potatoes need to be dug out of the ground before the frost comes, try not to damage its skin when digging, and store it in a pre-dug cellar, the soil around the cellar is good to loess, and the depth is 3 5 meters.

Sweet potatoes contain unique bioflavonoids, which can promote smooth bowel movements and effectively inhibit breast cancer.

and colon cancer.

the occurrence of the case; It can improve the function of digestive organs, nourish the liver and kidneys, and can also be effective for hepatitis and jaundice.

It is suitable for cultivation in areas where the average temperature in summer is more than 22, the average annual temperature is more than 10, the effective accumulated temperature in the whole growth period is more than 3000, and the frost-free period is not less than 120 days.

Expansion: 1. Sweet potato, sweet and warm, can smooth the intestines and laxative, strengthen the stomach and invigorate qi. Contains more cellulose, which can absorb water in the intestine and increase the volume of stool, causing laxative.

It is rich in fiber, which helps with bowel movements. Sweet potatoes contain a lot of sugar, protein, various vitamins and minerals, carotene and vitamin C, anti-cancer substances that inhibit the growth of cancer cells, and a lot of dietary fiber, so it can prevent constipation and intestinal cancer; At the same time, it can reduce calorie intake, and it is one of the best foods.

2. The tuber root of the legume liana jicama. It is also known as sand kudzu, soil melon, cold melon, cold potato, potato melon. It is cultivated in the central and southern regions of China, southwest China, Fujian, Taiwan and other places.

Harvested in autumn, washed, peeled off, and fresh. Sweet in taste and cool in nature. It can clear away heat and annoyance, and quench thirst.

Contains sugars, proteins, calcium, phosphorus, and jicama saponins, jicama flavonoids and other ingredients.

3. Cultivation technology.

White sweet potato is generally planted in the middle of April, the seeds are oval and flat, dark orange, the general ordinary people planting is to take the seedlings in the way of nutrient soil, so that the seedlings that grow out are more resistant to insect diseases, because the addition of insect disease prevention drugs in the nutrient soil can make the sweet potato more healthy in the later growth process, so as not to be eroded by insect pests, the temperature is appropriate at room temperature, and the high temperature should be strengthened to watering, so as not to lack water and dry fruit, and the sun should be sufficient, which is conducive to photosynthesis and synthetic sweeteners, In this way, the fruit is refreshing and sweet.

Sweet potatoes are temperature-loving and light-loving vegetables. The growing season requires high temperature conditions. The germination stage requires a temperature of 30, and the suitable temperature for the aboveground and flowering and pod-setting stage is 25 30.

The growth and development of tubers has a wide adaptability to temperature, and can expand and grow under lower temperature conditions. However, if the temperature is lower than 15, growth and development are inhibited.

The optimal temperature for growing sweet potatoes is 22-32 degrees.

Sweet potatoes are warm-loving, cold-tolerant, and not cold-tolerant, and the suitable growth temperature is 22-32, and the growth stops when the temperature is lower than 15. The temperature of the ridge should be 18-22 at the bud stage, 22-25 at the seedling stage, 22-30 at the stem and leaf stage, and 16 at the stem and leaf stage. Sakura punch orange.

Sweet potato has strong drought tolerance and adaptability, and the soil water holding capacity should be controlled at 60-70%, and suitable water conditions can meet the needs of different growth periods. The soil water holding capacity should be 60-80% at the bud stage, seedling stage, stem and leaf stage, branching and tubing stage, etc., and too low water holding capacity will cause root growth retardation, resulting in weak seedlings, dwarf seedlings, and diseased seedlings. The soil water holding capacity should be 60-70% at the root block stage, which can effectively promote the formation and expansion of root blocks. In case of rain, it is necessary to strengthen management, pay attention to reducing the phenomenon of water accumulation in the field, and improve the drainage capacity.

The best temperature for growing sweet potatoes is around 22 degrees Celsius.

The most suitable temperature for the growth of sweet potatoes is about 22 degrees Celsius, China has a vast territory, and the climate of the north and south is very different, and sweet potatoes are planted in the north and south of China, so the planting time of sweet potatoes in the north and south of China is also different.

The growth cycle of sweet potatoes varies depending on the time of planting, with the growth cycle of sweet potatoes in spring being about 160 to 200 days, while sweet potatoes in summer are generally 110 to 120 days.

Sweet potato growth cycle:

1. Slow seedling stage

The stems and leaves grow slowly and the root system is basically formed in the slow seedling stage, which lasts about 20 days. This period is mainly to check the survival of sweet potato seedlings and replenish seedlings in time, drip irrigation in time after planting seedlings, promote seedlings to take root, grow new adventitious roots, prevent seedlings from drying up, improve the survival rate, load seedlings once in half a month, loosen the soil to raise temperature, and protect the growth of the root system.

2. Branching and tubing period

The root system develops very rapidly at the branching and tubing stage, mainly growing fibrous roots, and the number of available potatoes is basically stable, with spring sweet potatoes lasting about 40 to 50 days, and summer sweet potatoes about 20 days. During this period, not only the branches and seedlings grow, but also the sweet potato tubers also began to form, and the hail liquid was dressed as a need for water, to ensure that the soil was moist, and the soil could be watered reasonably according to the soil moisture situation.

3. Full leaf stage

The peak leaf stage is the fastest period for the growth of stems and leaves of sweet potato from the ridge, the growth of stems and leaves reaches the peak, and the leaf area index reaches the maximum. Spring sweet potatoes last about 50 days, and summer sweet potatoes take about 30 days.

4. Late tuber swelling and stem and leaf decline stage

The tuber begins to expand rapidly during the period of tuber expansion and stem and leaf decline, and the stem and leaf grow slowly until it stops growing, which takes about 30 days until the end of the harvest. During this period, the management focuses on maintaining the normal physiological function of the stems and leaves and promoting the expansion of the tubers.

The optimal temperature for sweet potato storage is L0 -L4.

Sweet potato generally refers to jicama, which is a leguminous vine with grassy winding vines, with tubular roots, spindle-shaped or oblate-spherical, and fleshy. Pinnate; Leaves linear-lanceolate, leaflets rhomboid-shaped or ovate, lobes small, acutely acuminate, racemes, bracts bristle-hairy, early-falling; Corolla light purple or reddish, flag petals nearly rounded, wing petals sickle-shaped, columella curved, pods banded, flattened, seeds nearly square, flattened. It blooms in August and bears fruit in November.

Jicama is originally distributed in tropical America, Taiwan, Fujian, Guangdong, Hainan, Guangxi, Yunnan, Sichuan, and Guizhou. It is cultivated in Hunan and Hubei. Jicama likes a warm, sunny environment, strong resistance to stress, drought resistance, waterlogging resistance, barrenness and other characteristics, the soil requirements are not strict, to the topsoil is deep, high dryness with medium fertility sandy loam soil is appropriate.

Jicama tubers can be eaten raw or cooked; The seeds contain rotenone which can be used as an insecticide and is effective in controlling aphids.

The optimal temperature for sweet potato storage is L0 -L4, and in this range, there is not much difference in respiration. When the temperature rises to 20, respiration is enhanced, and more nutrients are consumed, causing bran and accelerating the occurrence of black spot and soft rot. Less than 9 is susceptible to cold damage, which makes the inside of the potato pieces brown and black, and the core is hard, not rotten when cooked, and it is easy to rot in the later stage.

The optimal humidity for sweet potato storage is 80%-95%. When the relative humidity in the cellar is lower than 80%, it causes the sweet potato to lose water and wilt, and the edible quality decreases. When the relative humidity is greater than 95%, although the respiration is reduced, the microbial activity is vigorous and susceptible to diseases. 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 decays.

1. If it is a pure sandy land, the water retention and moisture retention are poor, which is not conducive to the absorption of water and fertilizer by the root system, and the size of the sweet potato produced is relatively small.

2. If it is pure mud soil, the root permeability is poor, the respiration is inhibited, and the sweet potato produced is not sweet enough and the taste is not good.

3. The sandy soil of half sand and half soil not only has a certain permeability to the root system, but also can retain moisture and water, absorb fertilizer from the soil, and produce sweet potatoes that are not only fat, but also of good quality and sweet taste, which is more suitable for sweet potato planting.

Sweet potatoes are sweet potatoes, and sweet potatoes (sweet potatoes) are stored at temperatures between 10 and 14.

Therefore, in order to keep the sweet potatoes as fresh as they should, it is best to place them in this temperature range, too high or too low will affect their preservation, if they are placed in an environment of 30 degrees Celsius, black spots will appear within a week.

When storing sweet potatoes, you can wash them all once, then gently dry them, and leave them for 10 minutes before packaging. First of all, choose a discarded carton, a milk carton or a gift box that you usually use, and lay two layers of things at the bottom of the box, one for newspaper and the other for toilet paper.

After the preparation is completed, the sweet potatoes are gently placed neatly, and finally sealed and treated.

Sweet potatoes contain 8 kinds of vitamins such as vitamin C, vitamin B, vitamin A and more than 10 kinds of mineral elements such as phosphorus and iron, and also contain a large number of peculiar effects, sweet potatoes have high cellulose content, which can increase the volume of feces, promote gastrointestinal peristalsis, clean up the mucus retained in the intestinal lumen, keep the stool smooth, and improve the digestive tract environment.

Sweet potatoes are a kind of food that we often eat, and there are many ways to make sweet potatoes, such as roasted sweet potatoes, steamed sweet potatoes, boiled sweet potatoes, and so on. These sweet potatoes are very tasty, and now the weather is getting colder and colder, and the sweet potatoes are not easy to preserve after the weather is cold, and they are easy to be frozen or hardened.