Latest Purple Sweet Potato Seedling Raising Techniques and Methods Tutorial
Purple sweet potato is a plant of the same kind as sweet potato, and it is also one of the main food crops in our country. The nutritional value of purple sweet potato is higher than that of sweet potato, so the market for purple sweet potato is now gradually approaching that of sweet potato, and there is even a trend of surpassing it. Therefore, the planting area of purple sweet potato is also becoming larger and larger. The most important thing in growing purple sweet potato is to do a good job in seedling raising. Today, the editor brings you the seedling raising techniques for purple sweet potato. Let's take a look below!
1. Seedbed preparation
The seedling raising time for purple sweet potato is generally in spring each year. First, a good seedbed needs to be selected, and the seedbed should be properly prepared. The seedbed should be established on sandy soil in a place that is sheltered from the wind, has sufficient sunlight, strong permeability and sufficient fertility. Control the area of the seedbed according to the planting area, then do a good job in preparing the seedbed land, plowing the soil about 25 cm deep, and carry out disinfection to eliminate pathogens in the soil. Then prepare base fertilizer according to the fertility of the soil, mainly farmyard manure, to supplement the nutrient elements lacking in the soil.
2. Seed potato selection
The selection of seed potatoes is very important. For purple sweet potatoes retained for seed, the harvest time should be postponed to ensure that the tubers are fully mature. Then after the seed potatoes are dug out, carry out the work of sun-drying the seed potatoes, with the time controlled at about one day. Dry the moisture of the seed potatoes and eliminate pathogens. If there is no rush to sow, it is best to store the seed potatoes in a cellar, and try not to store them in strings, so as to prevent injury and reduce the germination ability of the seed potatoes. When the temperature gradually rises to about 15 degrees, seedling raising can begin, and the seed potatoes should be properly planted into the seedling bed.
3. Arranging the seed potatoes
When the temperature reaches the stage suitable for seedling raising, arrange the prepared seed potatoes neatly on the seedbed. Note that the quantity and density should be well controlled. When arranging, place the backs of the tubers facing upward, maintain a certain slant, and keep the head and tail directions the same. Then apply sufficient farmyard manure, spread it comprehensively and evenly over the seed potatoes, and then cover with about 2 cm of fine soil. Then cover well with plastic film and compact the soil to improve the germination rate of the seed potatoes. When sowing the seed potatoes, they must not be placed randomly, otherwise some seed potatoes will fail to germinate.
4. Seedbed management
After sowing, attention should be paid to regulating temperature and humidity, and ventilation should be strengthened. Before emergence, because the temperature difference between day and night in spring is relatively large, attention should be paid to covering with grass to improve heat preservation capacity and keep the soil temperature at about 30 degrees. Then after the seedlings emerge, the temperature can be appropriately lowered to prevent excessive temperature from causing seedling damage. When the temperature exceeds 30 degrees, ventilation should be done in time. Before emergence, attention should be paid to not watering as much as possible. If it is really too dry, appropriate spray watering can be done.
The above is a brief introduction to the seedling raising techniques for purple sweet potato. The seedling raising work of purple sweet potato is very important, directly affecting the yield and influencing the planting benefits, so everyone must pay more attention. That is all for today's introduction. This article is for reference only, and I hope it can be helpful to everyone!