Planting Technology and Management of Autumn Potato: the Best time for Autumn Potato planting

Do you want to grow potatoes in autumn? Then you have to understand the planting technology and management of autumn potatoes. Do you want to know? Let's get to know it.

Sowing and transplanting

1. The sowing date is determined: according to the climatic conditions of Pingnan County, the sowing date of autumn potato should be about August. The suitable temperature is 17-20 ℃, not more than 25 ℃.

two。 Seed treatment: select the disease-free, smooth and thin potato skin, and strictly remove the tubers with cracked epidermis, deformities and necrotic bud eyes.

3. Sowing: the growing season of autumn potato is in the season of high temperature and strong light. in order to create a cool environment, we should sow seeds on the shady slope, sow one single potato in each hole, then cover it with 3 cm thick pure land, and then cover the border with 2 cm thick rice straw.

Field management

1. Ploughing and soil cultivation: potato is a tuber crop. Loose soil and good ventilation are beneficial to promote tuber expansion. The first intertillage was about 8 cm in depth, mainly loosening soil and weeding; the second intertillage was carried out at the beginning of stolon, the depth was slightly shallower than the first one, and the third intertillage was shallower than the second intertillage at budding. The soil cultivation is about 3 cm in the first time and 6 cm in the second to third time. Deep ploughing and high soil cultivation of potato is not only beneficial to the development of root system, but also can prevent potato from being exposed to the surface of the soil.

two。 Fertilization: during the growth of autumn potatoes, the temperature gradually drops and the sunshine shortens, which is not conducive to the growth of stems and leaves, so it is necessary to skillfully topdressing. After finishing the seedlings, 15 kg urea per mu was applied in combination with ploughing to promote the rapid growth of seedlings. When the end of the stolon began to expand, 10 kg of urea and 20 kg of potassium sulfate per mu were applied to promote the accumulation of starch in tubers. The potato was sprayed with 0.30% potassium dihydrogen phosphate 0.35% potassium dihydrogen phosphate at full bloom, once every 10 days, for a total of 2 times, in order to increase tuber yield.

3. Water pipe: the cultivation period of autumn potato is in the dry season, and the water demand is higher than that of spring potato. Watering should be done in time after sowing, but as long as the furrow is kept moist, it should be watered every 3-4 days to promote seedling emergence. The seedlings should be watered frequently after they are unearthed to keep the soil moist and promote the growth of stems and leaves. In the tuber-forming stage, the weather becomes cool, the evaporation of the plant and the ground decreases, and the soil can be kept moist.