Matters needing attention in the latest planting of purple potato

Purple potato is a variety of sweet potato family, also known as black potato. The nutritional value of purple potato in dry mail is much higher than that of sweet potato, and it is also one of the main raw materials of anthocyanins, so the economic value of purple potato is much higher than that of sweet potato. Purple potato is mainly distributed in China's relatively mild climate throughout the year, such as Guangdong, Guangxi, Guizhou, Fujian and other places. So what do we need to pay attention to when planting purple potatoes? Let's take a look at it.

1. Temperature

The temperature suitable for the growth of purple potato stems and leaves is between 18 and 25 degrees, while the temperature suitable for tuber growth is between 22 and 24 degrees. If the temperature is below 125 degrees, the stems and leaves of purple potatoes will not grow, and when the temperature is below 20 degrees, the tubers of purple potatoes will stop growing. Therefore, we should pay attention to grasp the temperature of purple potato planting, and adjust the temperature properly.

2. Time

The time of planting and raising seedlings of purple potato is different from that of cutting planting. Generally speaking, we sow seeds and raise seedlings around the middle of February every year, of course, the temperature of the earth's surface must reach about 15 degrees before we can raise seedlings. While the time of raising seedlings is about three months, then the time of cutting planting is usually around the middle of May every year, of course, if the question in some areas is higher, the time of planting can also be chosen between March and April of each year.

3. Cover the membrane

In the cultivation of purple potatoes, plastic film mulching is also a more important link. In order to promote the rapid emergence of purple potato seeds, we should cover them with plastic film after planting them. Before covering the plastic film, we need to cover the seeds with fine soil, then cover with a layer of rotten barnyard manure, and finally spread the plastic film on it, which should be compacted with soil around.

4. Density

When just sowing and raising seedlings, the spacing between rows is 30 cm and the spacing between plants is 5 or 6 cm. When the seedlings grow to about ten centimeters in the later stage, it is best to plant them once. When ramet, the row spacing is 70 cm, and the plant spacing is 35 cm. When planting cuttings, we all use the spacing of 60 to 80 centimeters between rows and 30 to 40 centimeters between plants in the same field. Normally, the planting density per mu is more than 3, 000 plants, but it is best not to exceed 3500 plants.

5. Seedling control

Seedling control is an important step to promote the growth of purple potato tubers. When the stems and leaves of purple potato grow to about 40 to 50 centimeters, we should timely lift and smooth the seedlings of purple potato in the field, followed by tearing off the roots and hairs, and properly pruning off some stems and leaves to promote the growth of lateral branches. at the same time, we should hit the top in time, so as not to let the stems and leaves grow, so as not to cause excessive nutrient loss and affect the yield and quality of purple potato.

The above are some problems that need to be paid attention to when planting purple potatoes. I believe you should also know something about this aspect. At the same time, these are also factors that are often ignored in the process of planting. If you want to know more about purple potato cultivation, remember to follow us, or leave a message for the editor.