How to plant sweet potatoes to make them grow big How to plant sweet potatoes to produce more potatoes

Sweet potatoes are rich in nutrients. They are rich in dietary fiber, so they are easy to feel full. They are sweet and delicious whether eaten fresh or steamed or baked. Especially large sweet potatoes are not only delicious to eat, but also pleasing to the harvester. So how can we grow sweet potatoes so that they grow big and produce more?

How to grow sweet potatoes

1. Choose sweet potato varieties that are suitable for growing large, such as Harvest White, No. 5 Sweet Potato, etc.

2. Use lots of fertilizer and water. Sweet potatoes prefer to be treated with farmyard manure and chemical fertilizer. They should not be exposed to drought or waterlogging, even if they need to be drained during the rainy season.

3. The density should not be too high. Generally, it should be between 3,100 and 3,600 trees per acre, and planted in ridges.

Fourth, the growth of the seeds must be controlled. When the sweet potato vines extend to the bottom of the ridge, you can spray pesticides to control their growth and encourage the growth of tubers.

5. Apply more potassium fertilizer, because potassium fertilizer is an essential fertilizer for the growth and development of roots.

6. Spraying growth hormone after the beginning of autumn has a very obvious effect. Generally, two to three times of spraying is enough, once every half a month.

7. Cover the ground with mulch to keep warm and moisturize, which is conducive to the growth of sweet potatoes.

8. Ensure that the sweet potato growth cycle is long. It is best if the average ground temperature in spring is above 15 degrees, which means that the sweet potatoes can be planted before May Day in the north.

9. Be sure to apply herbicides after transplanting the seedlings. Do not turn over the sweet potato vines and allow them to grow naturally.

How to plant sweet potatoes to produce more potatoes

1. Cultivate strong seedlings. One of the keys to high sweet potato yields is the cultivation of sweet potato seedlings. If the sweet potato seedlings are strong, they can take root early after transplanting, produce tubers early, and grow fast. You can apply a thin layer of nitrogen fertilizer 5-8 days before harvesting the seedlings to cultivate tender and strong seedlings. The seedlings can be harvested and planted when they are 30 cm high.

2. Select the land, prepare the land and make ridges. Choose sandy loam with medium or above fertility and convenient drainage and irrigation. The soil should be loose, deep, nutrient-rich and air-permeable. For medium fertility land, about 5,000 kg of manure, about 25 kg of urea, about 30 kg of general phosphorus, about 30 kg of potassium sulfate, or about 40 kg of sweet potato fertilizer can be applied per mu.

For plots with average soil fertility, apply about 7,500 kg of manure, about 30 kg of urea, about 35 kg of common phosphorus, about 40 kg of potassium sulfate, or about 50-60 kg of sweet potato fertilizer per mu. The above fertilizers are applied after turning the ground. The principle of sweet potato fertilization is "organic fertilizer as the main fertilizer, chemical fertilizer as the auxiliary fertilizer, base fertilizer as the main fertilizer, and topdressing as the auxiliary fertilizer."

The ridge cultivation of sweet potatoes is beneficial for the root system to grow deep, the rhizome to expand, the accumulation of nutrients, and also conducive to drainage. When making ridges, try to make them delicate and without "hard cores". It is best for the ridges to run east-west, which is beneficial for receiving more sunlight and improving the utilization rate of light energy, which can make the sweet potato yield high and large.

3. Reasonable density planting, generally about 4,000 trees per mu. Due to soil fertility, the varieties can be flexibly controlled. The seedlings should be planted 3-5 cm into the soil, the holes should be watered, and then the soil should be compacted to increase the survival rate.

4. Field management: Check and supplement seedlings in time after the seedlings have grown slowly. Nitrogen and potassium fertilizers can be applied 15 days after planting. When the stems and leaves seal the ridges, if the soil is too dry, water can be poured across the furrows. When there are cracks in the soil on the ridges, that is, in September, it is the expansion period of sweet potatoes. Potassium fertilizers can be applied as the main fertilizer, supplemented with appropriate amounts of nitrogen fertilizers. If the planting area is large, phosphorus and potassium fertilizers, or plant ash liquid, or potassium dihydrogen phosphate liquid can be applied to the leaves. If the sweet potato seedlings are too vigorous during this period, a growth control agent can be sprayed on the leaves. Note that the seedlings must not be turned over during the entire growth period, but they can be lifted.

5. Harvest at the right time. The critical growth temperature of sweet potatoes is 15℃. Temperatures below 9℃ will cause frost damage. Harvesting can be started when the temperature drops to around 15℃ and completed when the temperature is around 12℃. This set of sweet potato cultivation technology can achieve a higher yield and larger size.

Can I plant sweet potatoes after harvesting wheat?

It can be planted, but the sweet potatoes grown in this way have two disadvantages. One is the low yield. The other is that the temperature becomes lower and the light time becomes shorter in the later stage of growth. In addition, the growth period is short and the starch content is low, so they can only be eaten fresh, and the taste is not as good as early sweet potatoes.

But farmers have their own ways. They also transplant sweet potatoes from wheat stubble and grow big seedlings. This compensates for the growth period, but there is no way to deal with the low temperature in the later stage. The starch content of the grown sweet potatoes is slightly lower than that of spring sweet potatoes and higher than that of the 膠子 sweet potatoes. However, the taste of fresh sweet potatoes is better than that of spring sweet potatoes and 膠子 sweet potatoes. Farmers call this kind of sweet potato late sprout sweet potato. In addition, the sweet potatoes are stored in cellars to increase the late maturity period and convert part of the starch into sugar, which also changes the taste of the sweet potatoes, making them soft and sweet.