What are the misunderstandings that need to be avoided when raising sweet potato seedlings?

First of all, we should pay attention to the temperature, the germination temperature of sweet potato is about 16 or more, and the most suitable temperature for seedling raising is about 16 35, the higher the temperature, the faster the sweet potato seedlings germinate.

Secondly, we should pay attention to the humidity, the humidity of the sweet potato seedbed should be kept at about 80%, and the higher the humidity required for the sweet potato seedlings to grow, but it should be noted that it should not be too wet or too dry, otherwise it will affect the survival rate.

At the same time, we should also pay attention to choosing a good time to plant sweet potatoes, the north and the south are different, if it is the south, it will be more suitable between February and April, and the north is probably in mid-April, and the north must use the greenhouse to plant sweet potato seedlings.

1.Make a choice about the quality of the soil. 2.

It should be planted early at the appropriate time and at the right time. 3.Thin ground should be planted vertically.

4.Thin land should be properly densely planted in order to increase yield. 5.

It is not possible to control the growth of sweet potato vines by cutting them, because the sweet potato vines greatly reduce the effect of photosynthesis absorption.

If we are unfortunate enough to step into a minefield.

Sweet potato seedlings must be cut seedlings, not to pull the seedlings mold, so that the entire red ruler Qi slow potato seedlings will be destroyed, cut seedlings, you can cut several in a nest, cut the first stubble of the source will grow two stubble three stubble, so the cut will save the best state of sweet potato seedlings.

There are two methods of sweet potato seedling harvesting: cutting seedlings and pulling seedlings. Seedling pruning is one of the main measures to prevent the spread of sweet potato diseases. When cutting seedlings, the base should be retained more than one inch, and cutting seedlings, especially high cutting seedlings, can reduce the carrying amount of pathogens such as potato seedling black spot disease and stem nematode disease, and effectively prevent or alleviate the occurrence of field diseases.

During seedling raising, the pathogens carried by the potato tubers will move from the tuber to the top of the potato seedlings, and the amount of bacteria carried by the potato seedlings will be reduced by high shearing and high pruning. Secondly, the advantage of cutting seedlings is that there are no wounds in seed potatoes, reducing the spread of disease infection, not pulling out pine seed potatoes, damaging the fibrous roots, which is conducive to the growth of potato seedlings, and can also promote the growth of new shoots at the base after cutting seedlings, and increase the amount of seedlings collected.

The use of pruning seedlings when transplanting sweet potatoes to Wangda planting, especially high pruning seedlings, can reduce the carrying of pathogens such as black spot and nematode disease in potato seedlings, and effectively prevent or reduce the occurrence of field diseases in Acacia.

The main thing is to ensure that this sweet potato can grow normally, and if you pull it out directly, it is likely to damage the roots.

Sweet potato seedling cultivation is actually the beginning of planting sweet potatoes, and there are many methods of sweet potato seedling cultivation, such as potato vine seedling cultivation method, potato root seedling cultivation method, etc. In fact, the traditional seedling cultivation technique is to store sweet potatoes in autumn and plant potato vines in spring

Note that the drainage sweet potatoes have flat rows, oblique rows and straight rows when sowing, and the description of flat rows will be more, which can make full use of this area and then provide more seedlings. After planting seedlings, it is necessary to irrigate in time, which can be manually watered or furrowed. Fields with high groundwater levels must be drained in time after irrigation, otherwise the seed potatoes will rot.

Sweet potato seedlings are generally raised in sunny weather at noon, because the temperature is relatively high at this time. If you choose a cloudy day, or a rainy day, or if you raise sweet potato seedlings in the afternoon, the air temperature is difficult to come up, 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 Celsius.

Potato vine seedling method, potato vine seedling method is in autumn, after the sweet potato harvest, select frost-free, disease-free robust potato vine, remove the leaves to retain 1cm of petioles, cut every two sections, and form potato vine segments. Potato vine hibernation seedling method, potato vine hibernation seedling method is to save the potato vines harvested in autumn until the second year to make sweet potato seedlings.

Vine cutting: After the sweet potato harvest in autumn, select a strong potato vine that is free of frost and disease, remove the leaves, keep the 1 cm petioles, and cut them in one section every two sections.

The temperature of sweet potato germination is at least 10 degrees Celsius, and if it is lower than 10 degrees, it will not germinate. In addition, it takes about a week to germinate at a temperature of 10-15 degrees Celsius, and the temperature that can make the normal growth and development of roots is about 18 degrees Celsius. Sweet potatoes are also very light-loving, and the demand for light is very large, and the leaves of sweet potatoes grow particularly well when there is sufficient light and high light intensity.

The suitable environment for the growth of sweet potatoes is generally dry and warm.

1.Note on temperature: The temperature for sowing sweet potatoes is about 15 degrees.

2.Seed selection is also very important: when choosing sweet potato seeds, choose large seeds with a smooth appearance that have not been eaten by insects.

3.After sowing sweet potatoes, pay attention to fertilizing sweet potatoes at a suitable time period.

Sand storage: dig a pit in the ground first, the length and width are not limited, and the depth is meters (depending on the thickness of the winter permafrost layer in various places, and the storage temperature is 5-10). Then the potato vine is laid flat in the pit with a layer of vine and a layer of sand, leaving a gap of 1 cm between the vines.

High-quality seedlings are the basic requirements and foundation for high yield and high yield of sweet potato. First, seedbed finishing: choose leeward and sunny land, preferably sandy loam, requiring deep soil, convenient drainage, sufficient water sources, and no waterlogging plots.

Built, according to the natural conditions of the terrain plot.

Sweet potato is a common name for sweet potato, and it is generally planted with buds taken from the female potato seedlings retained from the previous year. The traditional method is to use unfermented cow and horse pen fertilizer to make a bed after crushing, and put 250 grams of female potato steak on cow and horse manure to promote germination, the cultivation of sweet potato seedlings, and put sweet potatoes in the finished seedbed in spring and spring. The width of the seedbed is one meter, two or three long, depending on the number of sweet potatoes, generally fifteen to twenty meters (unheated).

Dig 30 centimeters down the seedbed and put the soil as the back wall and the front wall to make a rectangular seedbed, if you cultivate sweet potato seedlings indoors, you should pay attention to the light, the lack of light has a great impact on the growth of sweet potato seedlings. If you want to ensure the light, you can use the plant fill light for the fill light, but pay attention to the spectrum when choosing the fill light, if the spectrum is not suitable.

Planting sweet potato seedlings, generally need to turn the soil over the soil, this process is necessary to do, in the process of turning the soil, we have to make the soil into a small hill, and then we can plant, the reason why we want to do this, that is because if you don't do this, seedlings are one of the important links of sweet potato planting, sweet potato seedlings should be timely enough to raise strong seedlings, in order to ensure that the appropriate early planting, reasonable dense planting and seedlings are strong. Planting experience shows that strong seedlings significantly increase yield by 10-30% compared with weak seedlings.

To plant sweet potato seedlings, the plot should be sorted out first. If it is planted in spring, the plot is high, there is no stagnant water or good drainage, try to use plastic film cover cultivation. The soil of the plot should be loose and fertile, and it is advisable to choose well-drained and loose sandy loam.

It is best to choose spring cultivation, which will be planted a month after cultivation, and it is necessary to take measures to keep warm. It is necessary to pay attention to keeping warm, to pay attention to choosing good varieties, to pay attention to gaps, and to pay attention to not watering frequently.

It is generally cultivated before and after Qingming, and because of its growth needs, the temperature of the root must be kept at about 20, so that he can feel particularly stable in the first 30 days of planting can be used for seedlings, after the new teeth are grown, some fuller ones are selected and released, and finally 25 days before planting, it is picked down, the leaves are removed, cut into segments, the leaves are removed, and finally planted into the soil.

First of all, it should be watered and fertilized in time, and water and fertilizer management should also be strengthened, and pesticides should be sprayed regularly, and it is also necessary to maintain sufficient sunlight and fertile soil, and pests should also be removed in time, and drainage work is also required.

Sweet potato is a nutrient that reproduces asexually, and there is no obvious maturity standard and harvest period, but the early and late harvest has an impact on the yield, seed preservation, storage, processing and utilization and crop rotation of sweet potato. Early harvest will significantly reduce the yield of sweet potato; Late harvest, sweet potato is often affected by low temperature chilling injury, can not withstand storage, and the cutting rate decreases. Let's take a closer look.

<> suitable harvest date for sweet potatoes should be determined according to climatic conditions, safe storage time and the arrangement of the next crop. When the ground temperature is around 18, the weight of sweet potatoes does not increase much. When the ground temperature is around 15, the sweet potatoes stop expanding.

If the ground temperature is below 9 for a long time, chilling injury will occur. Therefore, it is common to start digging sweet potatoes at ground temperature 18 and finish the harvest before drying and frosting. Stubble seeds of cut spring sweet potatoes or winter wheat are generally harvested before the cold dew; The remaining summer sweet potatoes were collected before the frost fell; Stored edible sweet potatoes are harvested a little later, but must be done before drying frosts.

The determination of the harvest date and scientific storage methods are very important to improve the quality of sweet potato, which directly affects the quality and taste of sweet potato. Since sweet potatoes are a semitropical crop, they are susceptible to frost damage. Its delicate epidermis can easily be scratched and damaged during harvesting and transportation, leading to disease and then deterioration.

Therefore, keeping sweet potatoes safe for the winter is the key to better economic returns for potato farmers in the coming year. Listen to the weather forecast to avoid freezing sweet potatoes. Try to do it on the same day and don't leave the potatoes in the field overnight.

Placing sweet potatoes in a ventilated place for 3 to 5 days before entering the cellar can reduce the moisture content of the potato pieces and facilitate storage. Do it"Three light"(Light digging, light transportation, light cellaring)."Five defenses"(anti-freezing, rain-proof, anti-overnight, anti-penicillium, anti-disease), to ensure that the potato pieces are not diseased, penicillium, freezing, and flooded after being put into the cellar.

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When planting, we must choose high-quality varieties, timely watering and fertilization, strengthen the management of water and fertilizer, ensure the action of light, and also need to understand the growth cycle of sweet potatoes, spray some pesticides regularly, remove insect pests in time, do a good job of drainage and ventilation, timely loosening of soil, ensure the permeability of the soil, and the temperature should be controlled at about 18.

Pay attention to the time of harvesting sweet potatoes, not too early, not too late, harvest sweet potatoes best in the frost season, because the temperature is relatively low, sweet potatoes will not continue to expand, see sweet potato plants begin to yellow, or wilt, should be dug out to check, to ensure that the soil humidity is moderate, not too dry or too wet.

Be sure to choose the right time, the temperature should be controlled at about 18 degrees, must be based on the local climatic conditions, should also pay attention to the storage time, to reasonably arrange the planting time of the next crop, and be sure to harvest the ground in advance before frost.

It is necessary to pay attention to the time of harvesting, pay attention to the temperature, pay attention to the storage space, pay attention to the moisture, and inject the humidity of the storage space.

It is necessary to pay attention to the harvest, pay attention to the temperature, pay attention to the storage space, pay attention to the moisture, and inject the humidity of the storage space.

Due to the different regions, temperatures, weather and other environments, the cultivation time is also different, and there are a variety of different cultivation methods, so when cultivating, it is necessary to choose the appropriate cultivation method according to the individual's planting technology and region. Due to different regions, different varieties, different seedling methods, and different times, but sweet potato seedlings should generally be raised between mid-February and mid-April. The specific times are as follows.

1. The cultivation time of sweet potato seedlings.

1. The cultivation time of sweet potato seedlings should be determined according to the planting area and the weather, usually the cultivation time is concentrated in about March, when cultivating in the spring, it is generally before and after the sting, the southern region can start to cultivate in February, and the northern region should complete the cultivation before the Qingming Festival.

2. Due to the low temperature during cultivation, it is necessary to cultivate in the hotbed, during which it is necessary to do a good job of thermal insulation measures, and can also grasp the cultivation time fairly according to the time of planting and marketing, and generally start the cultivation work when planting sweet potato seedlings 4-5 weeks ago.

2. Cultivation method of sweet potato vine hibernation.

1. After harvesting sweet potatoes in autumn, start hibernation cultivation, sweet potato vines can be cultivated as seedlings in the second year, after sweet potato harvesting, you should choose the sweet potato vines that grow stout and free of diseases and pests, remove the leaves on the sweet potato vines, keep the petioles at about 1-2cm, and then soak the sweet potato vines in the amphithel medicine for 3 minutes, take them out and dry them, and then pick out the big stones and small stones on the ground.

2. Then dig a good storage cellar, put the sweet potato vine neatly into the cellar, and finally cover the fine sand, so that the sweet potato vine can be forced to enter hibernation, in the area where the temperature is low and frost is easy to occur, it is necessary to properly cover the plastic film, and then dig out the sweet potato vine for cuttings in the case of warmer weather in the second year.

3. Cultivation method of sweet potato root.

1. After all the sweet potatoes are harvested in autumn, the sturdy, scarless and robust sweet potato roots can be cultivated, each root retains about 3 sections, and then the leaves are removed, and then the size of the cultivation room is controlled according to the number of cultivation.

2. After planting sweet potato roots, it is necessary to pull the wire according to the plant row spacing of the plant, and then connect the sweet potato root and the wire to each other, after the sweet potato root germinates, select about 3 new shoots on each sweet potato root, and the new shoots must correspond to the rope, so as to facilitate the growth of sweet potato vines along the rope in the later stage.