Research has found that sweet potato leaves have health functions such as improving immunity, stopping bleeding, lowering sugar, detoxifying, and preventing night blindness. Sweet potato leaves can make the skin smooth, and regular consumption has the effect of preventing constipation, protecting eyesight, and can also keep the skin delicate and delay aging. The following is the planting technology of sweet potato leaves that I have organized, I hope it is useful to you.

Sweet potato leaf planting technology

1, variety selection

vegetable sweet potato generally choose strong branching force, rapid growth, leaf and petiole texture of tender hairless, good taste, stem fine, leaf fat varieties, such as Hunan vegetable potato No. 1.

2, planting site

In addition to the family's balcony, the terrace, the flat roof of the building, as well as gently sloping (20?) roof, as long as the sunny place can be used to plant sweet potato leaves.

3, material preparation

(1) planting containers can be homemade square or rectangular wooden planting box, you can also use the white foam box, 50-80cm long, 50-60cm wide, 35-45cm high. wooden box at the bottom of the wooden boards to leave a gap, the bottom corners of the foam box to leave a small hole, in order to facilitate the discharge of excess rainwater. In addition to the use of plastic flower pots as potted plants.

(2) Cultivation of soil and fertilizer is best to use loose, fertile high-quality garden soil, can also be used for soil, sawdust, husks, etc. as a substrate to join the cake fertilizer or rotting organic fertilizer to make the cultivation of soil. Fertilizer should be nitrogen-based fertilizer, phosphorus, potassium as a supplement, for the whole organic cultivation. Organic fertilizer can be used as high-quality nitrogen fertilizer by using domesticated chickens, ducks, pigeons and other poultry manure or drinking soybean milk after the remaining soya bean residue after rotting. You can also buy other kinds of organic fertilizer after fully rotted and add the right amount of soil, so that the fertilizer effect is long-lasting and vegetable quality is excellent. Prepared garden soil and organic fertilizer fully mixed (volume ratio of 5:1), after the sun sterilization, loaded with planting boxes or pots standby. Fill the height of the box, pot height of 1/2 -2/3, leaving a part of the soil is not filled in order to facilitate the accumulation of rainwater.

(3) planting materials

Planting materials can be bought on the market to prepare for consumption of high-quality sweet potato leaf varieties, will be a little old stem section cut off 8 to 10cm long spare. Or you can raise your own seedlings, using the sprouting characteristics of the tuber (sweet potato) to cultivate seedlings. Both methods can be used flexibly according to the situation. If the family has a good variety of potato, can be in March-April each year, will be buried in the soil, and take measures such as cover film insulation, to promote the growth of sprouts. Generally about 30d, when the potato seedling reaches 25-30cm, timely seedling planting.

Emphasis on cutting the first section of young strong seedlings for seedlings, cut seedlings should be left within 5cm of the head of a number of branches, but can not stay too long to promote the development of new seedlings. So the cycle of cutting seedlings, can expand the planting area. Sweet potato leaf harvest time is long, Hunan has been harvested until November. Even if the cuttings before and after the fall can be harvested fresh and tender products.

4, planting method

The production of sweet potato leaves do not need to produce potato blocks, so the planting method is very simple. Cut sweet potato stem section or sweet potato sprouts 8 ~ 12cm planted into the soil, the depth of about 5cm, row spacing 8 ~ 10cm. the first pouring of water, and then keep the bed moist, about 3 ~ 4d can be rooted and long leaves. Summer and fall by 15d, winter and spring by about 30d can pick young stems and leaves to eat. If you use pots, you can set up a frame for pendant cultivation. Generally use bamboo sticks, tree sticks or other materials, fixed into a frame with a rope. Let the sweet potato vine drooping along the frame, this can expand the growth space, favorable photosynthesis, improve yield.

When planting seedlings, it is best to choose a cloudy day when the soil is not dry and not wet, and when the temperature is high on a sunny day, it is better to plant in the afternoon. It is not advisable to plant seedlings after heavy rain, because the soil is too wet to prevent the development of the root system, slow growth. Should wait until the rain is over and the soil moisture is suitable before planting. After planting the seedling compaction of the soil, so that the roots and soil in close contact, early survival.

5, planting management

(1) plant adjustment sweet potato stem and leaves (vine) grow fast, easy to aging, when the sweet potato leaf grows out of 5-6 leaves of the shoots, you should try to harvest and eat, because the branch tip harvesting can make the branch continue to branching exuberant. Therefore it should be harvested and eaten in time. Meanwhile the stem nodes away from the ground have their sprouting growth gradually weakened, so the branches on the main stem should not be left too many and too long. After every period of time will be young stem and leaves picking, the main stem should be left 3 ~ 5 branches, each branch left 5cm long, the above part of all cut off. 3-4 months later, if the plant appeared to early decline phenomenon, the use of recutting retraction method, and loosening the soil, fertilizer, two weeks after the normal growth can be resumed. Pots can be planted on the shelf cultivation, slightly tied can be.

(2) fertilization, soil disinfection in the balcony, roof planting sweet potato leaves are not for the production of potato blocks only to obtain high-quality shoots, so there must be sufficient organic fertilizer continuous supply of nutrients. Generally in the continuous picking after 2 to 3 times must be added fertilizer, can be poured or buried in the root system around, every 1 week or so, and can usher in a new growth spurt.

Generally after 3-4 months of planting sweet potato leaves, repotting must be carried out, the planting soil is thoroughly dug over, and then reapplied with sufficient organic fertilizer. As long as there is enough sunlight, water, and fertilizer, it is possible to consistently produce high-quality sweet potato shoots and leaves for urban households.

To prevent soil diseases, it is best to plant sweet potato leaves in a new soil in the second year of planting, or it can be rotated with other vegetables or used as a planting soil for other flowers. When planting all kinds of vegetables, use the balcony, roof of the sufficient light resources, it is best to all the prepared soil are exposed to the sun to disinfect, in order to do without the application of any chemical agents.

(3) summer shade, watering although sweet potato is sun-loving plants, but the summer balcony temperature is high, strong light, water evaporation, will affect the growth of sweet potato leaves, and even will be shriveled up and die, need to build a shade trellis. Available 50% black shade net shade cultivation, at the same time need to be watered diligently to grow tender green stems and leaves, usually 1-2d watering 1 time. Other seasons use natural rainfall, keep the bed soil moist can be, the soil is too dry before artificial watering.

(4) weeding, loosening the soil with good fertilization conditions, also suitable for weed growth. Therefore, in the process of planting sweet potato leaves also need to check often, found any weeds are pulled out, in order to reduce the consumption of soil nutrients. At the same time, if the soil is found to have the phenomenon of knotting, also need to use small hoe and other tools will be appropriate to hoe the soil loose, in order to facilitate the growth of underground root system is good, to ensure that the above ground stem and leaf growth is vigorous.

(5) pest control, balcony planting sweet potato leaves as long as the method is appropriate generally very few diseases, and occasionally pests occur. There are mainly turtles, tigers, sweet potato moths, leaf rollers, oblique moths, etc., can be captured artificially.

Role of sweet potato leaves

Nutritional composition of sweet potato leaves

Sweet potato leaves are the leaves of the sweet potato vine, also known as sweet potato leaves, is a sweet potato plant of the family Cyclophyllaceae, which was artificially selected and cultivated for people to eat varieties of sweet potato seedling apical tip of the young stems in Hong Kong is still known as the world? Queen of Vegetables? It is also known as the queen of vegetables in Hong Kong and around the world. Longevity Vegetable and? Anti-cancer vegetable?

Sweet potato leaf nutrition is often rich, green leaves, fresh, crisp, most of its nutrient content than spinach, celery and other such high nutrient content is much higher, especially carotenoids than ordinary carrots 3 times higher than fresh corn, taro and more than 600 times higher.

Sweet potato sprouts are rich in nutrients, per 100 grams of sweet potato seedlings and vines at the top of the 15 centimeters and young leaves, petioles collectively known as stems. Sweet potato stem tip is rich in protein, carotene, vitamins, iron and calcium.

According to laboratory analysis: the amount of crude protein in the stem tip is 21.1%-15.1% of the dry weight, which is comparable to pig beef. The protein of stem leaves and stem tips is 2.7%, carotene is 5580 international units/100g, vitamin C is 41.07 mg/kg, calcium is 74 mg/kg, iron is 4 mg/kg, vitamin B1 is 3 mg/kg, niacin is 6 to 10 mg/kg and B6 is 2.1 mg/kg. According to the Chinese College of Preventive Medicine test, sweet potato leaf stem tip and celery, kale, spinach, cabbage, greens, leeks, cucumbers, eggplant, carrots, tomatoes and other 13 kinds of vegetables compared to the 14 kinds of nutrients, protein, fat, calories, fiber carbohydrate, calcium, iron, phosphorus, carotene, vitamin C, B1, B2, niacin and so on 13, the sweet potato leaves are in the first place.

Health effects of sweet potato leaves

Sweet potato leaves are rich in mucin, which has the effect of improving human immunity, enhancing immune function and promoting metabolism. Eating sweet potato leaves can delay aging.

Sweet potato leaf effect

Detoxification

Rich in chlorophyll, can? purify the blood?

Improve immunity

Containing 5-10 times higher antioxidants than the average vegetable, it can improve immunity and? prevent colds and flu?

Prevent anemia

Daily intake of 30g of sweet potato leaves, you can replenish the human body a day of iron and vitamins A, C, E;

Prevent high blood pressure

Rich in potassium, which helps to control blood pressure and prevent hypertension;

Improve constipation

Rich in dietary fiber, which promotes gastrointestinal peristalsis, preventing? constipation and hemorrhoids?

Anti-cancer

Rich in polyphenols, which can prevent cell cancer;

Improve menopausal symptoms

Rich in phytosterols, which can achieve the effect of regulating bodily functions similar to that of hormones;

Promote breast milk secretion

Rich in flavonoids and other substances, which can promote lactation;

Strengthening of Vision

Rich in vitamin A, can enhance vision.