How to raise sweet potato seedlings, how to raise sweet potato seedlings

How do you raise sweet potato seedlings?

There are three main steps in sweet potato seedling.

Step 1: Pick a healthy, plump seed and plant it in moist soil.

Step 3: When the seedlings grow to one centimeter long, the film can be lifted and retransplanted.

Another new method of sweet potato seedling rearing. The sweet potato seedlings of the previous year were used for sand storage and preservation, and the next spring was taken out for cuttings and planting. The specific method is to collect the sweet potato seedlings that have not undergone frost, leaving only the stems, without leaves, and cutting them into a section every 2-3 sections.

Then prepare the amphiterine solution. Soak the cut sweet potato seedlings in the solution for two minutes to promote forced dormancy. Remove the surface moisture to dry.

Then dig a deep pit with a depth of 1 to 1 meter. The inside is paved with damp sand. Then spread the sweet potato seedlings flat, layer a layer of sweet potato seedlings and a layer of sand, do not place too densely, to prevent rotting.

The humidity of the sand is better if it is kneaded into a ball by hand without dripping. The temperature of storing sweet potato seedlings should generally be controlled at 5 to 10 degrees. The top layer of sand must be at least 20 cm thick.

Covered with a layer of film. Or a woven bag. Cover it with straw curtains, corn stalks, etc., to prevent frost damage.

The use of sweet potato seedlings for storage and seedling cultivation can save a lot of potato pieces. The sand used, preferably sifted. Remove large particles of sand before use.

Sweet potato is the main cash crop in our country, sweet potato has been planted in many areas, we know that sweet potato is good to plant seedlings and difficult to raise, so how do farmers cultivate sweet potato seedlings? What should I pay attention to in the process of raising seedlings? Next, let's learn about scientific sweet potato seedling breeding methods and techniques.

1. Seedling raising time.

Sweet potato seedlings are generally raised on a sunny day at noon because the temperature is higher at this time. If you choose to cultivate sweet potato seedlings on cloudy, rainy or afternoon days, it is difficult for the temperature to rise, the ground temperature is relatively low, and the germination effect is poor. The average temperature of sweet potato seedlings is generally between 15 and 20 degrees.

2. Seedbed selection.

Choose a plot of land with soft soil, leeward and sunny, flat terrain to make a seedbed, the seedbed is good in the east-west direction, the general seedbed is wide and the length is determined according to the number of potato seedlings required. Bed soil to loose, fertile thickness 8, 10 cm. Then sprinkle a certain amount of well-rotted cow and horse manure and other stable manure to prepare for the discharge of seed potatoes.

3. Seed processing.

Seed potatoes should be selected with bright complexion, no disease and no injury, and no frozen body pulp as the improved seeds, and the weight should be about half a catty. According to the old farmer, about 60 catties of sweet potatoes are needed for potato seedlings per mu of land as seed potatoes.

4. Soak in bed.

In order to breed high-quality sweet potato seedlings, they can be soaked in warm water or medicine. While soaking the seeds in warm water, soak them in warm water at 50 degrees for 15 minutes. Once the seed potatoes are in the water, they should be constantly turned over so that they are evenly heated.

5. Arrangement management.

There are three types of sweet potato rows: oblique, flat and straight. Mulching seedlings are generally mainly obliquely arranged, and the potato head is pressed to one-third of the potato tail. The seed potatoes are evenly distributed but not dense, which is conducive to absorbing sunlight, early emergence of seedlings and more seedlings, and cultivation of strong seedlings.

When arranging seed potatoes, it is necessary to distinguish the head and tail, and not to reverse the row. After the seed potatoes are arranged, they should be covered with a layer of 10 15 cm of stale manure, then poured with permeable water once, and then covered with plastic film.

6. Seedbed management.

In order to facilitate the grasp of the emergence of seed potatoes, every 3 5 days, the manure should be turned off to observe the germination of seed potatoes, and the moisture should be applied to replenish water to the seedbed. When sweet potato seedlings emerge, as the temperature increases, the plastic film should be gradually removed to allow the potato seedlings to adapt to natural growth, so as to facilitate field transplanting.

How do you raise sweet potato seedlings?

1. Breeding time, sweet potato seeds should be bred in mid-February, using open field breeding, not covering film, should be planted 45 days before the seedling breeding is more appropriate.

2. Seedbed layout, choose sterile and disease-free sunny plots to do breeding seedbeds, choose leeward sunny terrain flat, good drainage, low groundwater location plots, seedbeds to east and west as well, generally bed width of about meters, length according to the number of potato seeds, covered with plastic film. Fill the bed soil: The bed soil should be loose, fertile, and free of germs, and it is best to use sandy loam soil.

The bed soil is not easy to be too thin or too thick, and it is generally appropriate to use 5-8 cm. A certain amount of well-rotted cow and horse manure should be applied to the bed soil, and 100 grams of ammonium sulfate should be applied per square meter after the bed soil is flattened to improve the quality and quantity of potato seedlings.

3. Selection and treatment of seed potatoes: select potato tubers with the characteristics of this variety, smooth skin, bright skin color, uniform potato pieces, moderate size, no disease and no injury, no cold damage and wet damage, and more white pulp. The weight should be 3 taels to 1 city catty, and 65 city catties of sweet potato seeds per mu should be used.

4. In order to prevent seed potatoes from getting sick, they can be soaked in warm water or chemicals. When participating in warm water soaking, soak in warm water at 51-54 degrees for 10 minutes, and strictly grasp the water temperature and time when soaking, and keep turning up and down when the seed potatoes are first warmed to make them evenly heated. The seed potatoes raised in the open field or those that have been slightly damaged by frost should not be soaked in warm water.

Seed potatoes can also be soaked with pesticides, with 50 carbendazim plus water 500 times, or with 70 tetrakitobuzin and 700 times water soaked for 10 minutes, can be sterilized and disease-preventing. You can also use the above potion to sprinkle the seedbed with water waves.

5. Seeding technology: There are three kinds of arrangement: oblique row, flat row and straight row. The oblique row is 1 3 of the potato head pressing the potato tail, so that the middle and upper part of the potato block is made of kang, and the solar breeding is better than the flat row, and the potato seeds are evenly distributed and not dense, which is conducive to cultivating strong seedlings.

In general, it is not advisable to use in-line arrangement. When discharging potatoes, it is necessary to distinguish the head and tail, not upside down. Generally, the scalp of potatoes is dark in color, with more pulp juice and few fine roots.

Due to the different sizes of potato pieces, it is necessary to classify and select, and arrange potatoes separately, and should master the principle of dense row of large potatoes and sparse row of small potatoes, and the principle of arranging the top and bottom together, so that the soil covering the potato pieces is consistent and the seedlings emerge evenly and neatly, which is convenient for seedbed management.

Sweet potato seedlings should be rooted with sweet potato stems and leaves, and ordinary cuttings can be rooted, but areas below 12 degrees can not be rooted.

Sweet potatoes still need to be well cared for.

The methods of sweet potato seedling cultivation are sweet potato root seedling cultivation and sweet potato vine seedling cultivation.

1. Sweet potato root seedlings.

Root seedling cultivation is also the most commonly used seedling raising method, and the seedling raising time will vary according to different places, but in general, sweet potato seedling cultivation should be carried out between mid-February and mid-April. The so-called sweet potato root seedling cultivation method is to plant the harvested sweet potato tubers into the seedling field of your choice, and then the seedlings will grow from the sweet potato roots. Each sweet potato tuber will grow sweet potato seedlings, and the roots of each seedling will have independent roots.

2. Sweet potato vine seedlings.

Potato vine seedlings need to keep the potato vines after the autumn harvest for one winter, and then take root from cuttings in the next year. This method is labor-saving and time-saving compared with root seedling, but it has certain difficulties since operation. The specific method is to select a strong potato vine that is free of frost and disease after the sweet potato harvest in autumn, remove the leaves, and retain the 1 cm petiole.

Cut every two sections to form a potato vine segment, and the operation method in the future is the same as normal planting.

The rest of the methods

The root system of sweet potatoes can also be propagated, and the potato root seedling method has the characteristics of using space and large amount of seedlings, and the roots can also harvest a certain yield of sweet potatoes in spring. Generally, when digging sweet potatoes in autumn, the sweet potato roots are pruned and buried in an insulated greenhouse or a room with heating conditions, so that they can continue to grow, so as to cut the sweet potato stems and vines for propagation. Sweet potato roots can also be stored in a sweet potato cellar and planted in the spring of the following year.

This method is to intercept the vigorous seedlings of spring potatoes, each seedling is 20-30cm long, and directly planted without roots. This kind of seedling is suitable for autumn potato planting, and is suitable for planting in the south of China, Shandong and Henan. The advantage of raising seedlings in this way is that it effectively eliminates the carrying of diseases, which is equivalent to automatic disinfection at the seedling stage.

1. Cultivation time

When cultivating sweet potato seedlings, it is best to carry out them in March and April every spring, because the temperature at this time is about 15 degrees, and the light is relatively bright, which is conducive to the growth and germination of sweet potatoes, or to cultivate sweet potato seedlings in the greenhouse, the indoor temperature can be controlled between 15-20 degrees, so that the sweet potato seedlings grow vigorously.

2. Germination method

When cultivating sweet potato seedlings, you need to prepare a shallow basin that has been sterilized, then pour water into the shallow basin, and then place the sweet potato in water, and the depth of the shallow water cannot exceed the sweet potato, and finally you can move the sweet potato to a ventilated semi-shaded environment, wait for a few days, and the sweet potato will sprout.

3. Planting method

When planting sweet potato seedlings, you need to use a sharp knife to cut the sweet potatoes into small pieces, so that each sweet potato piece has 1-2 sprouts, and choose a sandy loam soil with good drainage, and then apply rotten farm fertilizer to it to make the soil more fertile, and then the sweet potato pieces can be planted into the soil.

4. Maintenance management

When maintaining sweet potatoes, it is necessary to apply urea to the plants about 15 days after planting, so that the growth rate of sweet potatoes is accelerated, and during the vigorous growth of sweet potatoes, it is necessary to prune the seedlings with more vigorous growth and more branches, and the side branches of the plants can be cut off to make the tubers of sweet potatoes get more nutrients.

Habits of sweet potato seedlings

The growing period is 160-200 days, and the summer potato is about 110-120 days, according to the growth characteristics of red spring in the field and its relationship with climatic conditions. Prefer temperature and fear of cold, 5-10 cm when planting seedlings, the ground temperature is about 10 and does not sprout, 15 takes 5 days to sprout, 17-18 roots are normal, 20 3 days to sprout, 27-30 only one day to sprout. In the case of sufficient light, the leaf color is thicker, the leaf age is longer, the stem vine is thick, the conduction tissue of the stem is developed, and the yield is higher.

Summary. 2. When cultivating sweet potato seedlings by germination method, you need to prepare a shallow basin that has been sterilized, then pour water into the shallow basin, and then place the sweet potato in water, and the depth of the shallow water can not exceed the sweet potato, and finally the sweet potato can be moved to a ventilated semi-shaded environment, wait for a few days, and the sweet potato will sprout. 3. When planting sweet potato seedlings, you need to use a sharp knife to cut the sweet potatoes into small pieces, so that each sweet potato block has 1-2 sprouts, and choose the sandy loam soil with good drainage, and then apply the rotten farmhouse fertilizer to make the soil more fertile, and then the sweet potato pieces can be planted into the soil.

How to raise sweet potato seedlings.

Dear is happy to answer for you, the best time to cultivate sweet potato seedlings is in March and April every year, when cultivating sweet potato seedlings, you need to choose fresh and pest-free sweet potatoes, and then place the sweet potatoes in a shallow container filled with water, wait for about a week, the sweet potatoes will sprout, and then you can plant the sweet potato seedlings in fertile soil.

When cultivating sweet potato seedlings, it is best to carry out in March and April every spring, because the temperature at this time is about 15 degrees, and the light is relatively bright, which is conducive to the growth and germination of sweet potatoes, or cultivate sweet potato seedlings in the greenhouse, you can control the indoor temperature between 15-20 degrees, so that the sweet potato seedlings grow vigorously.

2. When cultivating sweet potato seedlings by germination method, you need to prepare a shallow basin that has been sterilized, then pour water into the shallow basin, and then place the sweet potato in water, and the depth of the shallow water can not exceed the sweet potato, and finally the sweet potato can be moved to a ventilated semi-shaded environment, wait for a few days, and the sweet potato will sprout. 3. When planting sweet potato seedlings, you need to use a sharp knife to cut the sweet potatoes into small pieces, so that each sweet potato block has 1-2 sprouts, and choose the sandy loam soil with good drainage, and then apply the rotten farmhouse fertilizer to make the soil more fertile, and then the sweet potato pieces can be planted into the soil.

4. When maintaining and managing sweet potatoes, it is necessary to apply urea to the plants about 15 days after planting, so that the growth rate of sweet potatoes is accelerated, and during the vigorous growth of sweet potatoes, it is necessary to prune the seedlings with more vigorous growth and more branches, and the side branches of the plants can be cut off to make the tubers of sweet potatoes get more nutrients.

Seedling raising method of sweet potato seedlings: rattan potato hibernation seedling method, potato root seedling method, potato vine seedling method.

The first is the hibernation seedling method of rattan potatoes, in which the potato vines harvested in the autumn of that year are stored, and the cuttings are dug up and cultivated in the second year.

The second is the potato root seedling method, which transplants the potato roots into the greenhouse, and uses the sweet potato vines as sweet potato seedlings after planting in winter, and can be directly taken out and planted in spring.

The third is the potato vine jujube dismantling and balancing seedling method, which is frost-free and disease-free, and the robust potato vine is moved into the greenhouse for cultivation, and then planted in spring.

These three sweet potato seedling methods have the characteristics of low input, easy management and low cost, which can not only make the waste potato vine and potato root become treasure, but also save a large number of seed potatoes, eliminate the decay loss of seed potato bench for cellaring, and can save the land occupation of seed potato seedlings and the field management during seedling raising, which has significant economic benefits, and is especially suitable for small-scale implementation of farmers' families.

Nutritional value of sweet potato seedlings:

Sweet potato seedlings are rich in nutrients, and the 10-15 cm at the top of each 100 grams of sweet potato seedlings, young leaves, and petioles are collectively called stems. Sweet potato tips are rich in protein, carotene, vitamins, iron and calcium. According to laboratory analysis:

The mass of crude protein at the tip of the stem is dry weight, which is comparable to that of pork beef.

The protein of the stems, leaves and tips is, carotene is 5580 IU 100 g, vitamin C is 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, B6 is mg kg.

According to the test of the Chinese Preventive Medical College, compared with 13 kinds of vegetables such as celery, cabbage, spinach, cabbage, rape, leeks, cucumbers, eggplants, carrots, and tomatoes, among the 14 kinds of nutrients, protein, fat, calories, cellulose carbohydrates, calcium, iron, phosphorus, carotene, vitamin C, B1, B2, niacin, etc. 13 items, the stem loss ranked first.