If you want to grow good black potatoes, you'd better choose a piece of land with loose texture and good air permeability, and the soil fertility should be sufficient, which is the basis of high yield. Moreover, it is best not to plant sweet potatoes and peppers before, and it is best to plant wheat, corn or Chinese cabbage in the last crop. Before planting, the land should be deeply ploughed for at least 25-30 cm to ensure that all the soil is cultivated very finely and there is no large soil, so that the water retention capacity will also increase. When plowing, you should spread enough chassis on it, because black potatoes can only produce high yield if they are fertilized in large quantities, so fertilizer must be sufficient.
After tidying up the land, we should consider the problem of sowing. Before that, you must choose the seeds. Seeds must be free from any wounds. Such seeds have not suffered from diseases and injuries, and the surface looks smooth, so they should be cut into blocks. All seed blocks should be uniform, about 25 grams. In order to ensure the early growth of seedlings, teeth should be urged before sowing, and the place for germination should be around 20 degrees, and there should be no sunshine.
When sowing, choose the most suitable time. Generally, black potatoes can grow when the temperature exceeds five degrees, but the most suitable temperature is 18 degrees. Therefore, as long as the local temperature exceeds five degrees, you can sow. When sowing seeds, you should pay attention to the density of seeds. About 4000 black potatoes can be planted per 667 square meters of land. After planting, we should pay attention to field management. In order to ensure the normal growth of each stage, the fertilizer must keep up, and the soil should be watered in time to keep it moist.
Although the yield of black potatoes is generally high, it is also under the premise of normal planting, so these technologies must be clarified so as to ensure their own yield, and in addition, black potatoes should be prevented from being affected by pests and diseases. Once diseases occur, all efforts may be in vain.