Seedling raising techniques of Purple Potato

Purple potato is a kind of plant similar to sweet potato, and it is also a major food crop in China. The nutritional value of purple potato is higher than that of sweet potato, so now the market of purple potato is gradually approaching sweet potato, even exceeding the trend. Therefore, the planting area of purple potato is getting larger and larger, and the most important thing for planting purple potato is to do a good job of raising seedlings. Today, the editor brings you the seedling technology of purple potato. Let's take a look at it.

1. Seedbed preparation

The seedling time of purple potato is generally in the spring every year, first of all, we need to choose a good seedling bed and do a good job in the finishing of the seedling bed. The seedbed should be built on sandy soil with leeward, sufficient light, strong permeability and sufficient fertility. Control the area of the seedling bed according to the planting area, and then do a good job in the preparation of the seedling bed, turn the soil to a depth of about 25 cm, disinfect and eliminate the germs in the soil. Then match the base fertilizer according to the fertility of the soil, mainly farm manure to supplement the missing nutrient elements of the soil.

2. Seed potato selection

The selection of seed potato is very important, for the purple potato with seed, the harvest time should be postponed to ensure that the potato pieces are fully mature. Then dig out the seed potatoes and dry the seeds for a day or so. Dry the moisture of seed potatoes and eliminate germs. If you are not in a hurry to sow, it is best to store the seed potatoes in the cellar and try not to store them in clusters, so as to prevent injury and reduce the germination ability of seed potatoes. When the temperature gradually rises to about 15 degrees, seedlings can be started and seed potatoes can be properly planted in the nursery bed.

3. Arrange seed potatoes

When the temperature reaches the stage of breeding, put the prepared seed potatoes neatly on the seedbed. Pay attention to control the quantity and density, in the arrangement of the potato back up, maintain a certain inclination, head and tail direction should be the same. Then apply enough farm manure, sprinkle it comprehensively and evenly on the seed potatoes, and then cover about two centimeters of fine soil. Then cover the plastic film, compact the soil and improve the germination rate of seed potato. Seed potatoes should not be put casually when sowing, otherwise some seed potatoes will not be able to germinate.

4. Seedbed management

After sowing, we should pay attention to the regulation and control of temperature and humidity and strengthen ventilation. Before emergence, because the temperature difference between day and night in spring is relatively large, so we should pay attention to cover grass, improve heat preservation capacity, and keep the soil temperature at about 30 degrees. Then after the seedlings are unearthed, the temperature can be reduced appropriately to prevent the seedlings from burning due to excessive temperature. When the temperature exceeds 30 degrees, ventilation should be done in time. Be careful not to water the seedlings as much as possible before emergence. If they are really too dry, spray water properly.

The above is a brief introduction to the seedling technology of purple potato. The seedling work of purple potato is very important, which directly affects the yield and planting efficiency, so we must pay more attention to it. This is the end of today's introduction, this article is for reference only, I hope it can be helpful to everyone!