Where is purple sweet potato suitable for planting? Planting methods and high-yield cultivation techniques
Purple sweet potato is one of the common coarse grains. It is more nutritious than ordinary sweet potato, rich in selenium and anthocyanins, and has the effects of anti-fatigue, anti-aging, blood enrichment and anti-cancer. In recent years it has been widely favored by people, and its planting space is extremely broad. However, if you want to achieve high yield, management in all aspects is extremely important. Let's take a look at the high-yield cultivation techniques for purple sweet potato below.
Where can purple sweet potato be planted? Purple sweet potato is a temperature-loving crop, and a temperature of around 23 degrees is the most suitable for its growth. So when choosing a planting site, we should choose an area with moderate temperature, relatively high and dry terrain, and a good drainage and irrigation system. The soil for planting purple sweet potato must have good fertilizer and water retention, and be fertile and loose in texture, preferably sandy soil. After choosing the site, prepare the land and apply fertilizer. Apply an appropriate amount of base fertilizer according to the area of the chosen site. The base fertilizer is mainly decomposed farmyard manure, and it should be plowed into the soil together.
1. Select good varieties
Purple sweet potato has high nutritional value and a wide range of uses, so when planting, it should be selected according to the specific use. Generally, varieties with strong stress resistance, tolerance to drought and poor soil, and strong resistance to pests and diseases are chosen. After selecting the variety to be planted, dry the seeds, then spray them with a 800-fold solution of Xin Gao Zhi Mo. This can not only prevent pests and diseases, but also strengthen the respiration of the seeds and increase the germination rate.
2. Apply sufficient base fertilizer
Purple sweet potato is suitable for planting on plots with relatively high terrain and convenient drainage and irrigation, and it is best to choose loose, fertile sandy loam rich in organic matter. Plow it 40-50 cm deep to allow the soil to fully weather, then make ridges. When preparing the land, apply base fertilizer. Generally, apply 1500-2000 kg of decomposed farmyard manure, 20-25 kg of compound fertilizer, and 15 kg of potassium fertilizer. The farmyard manure is broadcast on the surface, and the chemical fertilizers are applied in furrows. When applying fertilizer, also broadcast some phoxim to prevent damage from underground pests.
3. Strengthen management
If purple sweet potato is to achieve high yield, field management is extremely important. First, carry out intertillage and weeding according to the crop, combining intertillage with hilling and watering. In addition, lift the vines in time. After lifting the vines, spray Di Guo Zhuang Di Ling so that the transport ducts of the underground tubers become thicker, allowing the tubers to expand faster and further increasing the yield. At the same time, attention should also be paid to the prevention and control of pests and diseases. Although purple sweet potato has few pests and diseases, one should not be careless. Underground pests include cutworms and red ants. During plant growth, topdress in time. If the base fertilizer is sufficient, no topdressing is needed during the growing period. If the base fertilizer is insufficient, topdress 2-3 times in the later period. When the tubers are expanding, do not topdress.
4. Harvest at the right time
The harvest time of purple sweet potato must be well controlled. If harvested too early, the yield will be reduced, while if harvested too late, the storage tolerance of the tubers will decrease due to the effects of low-temperature chilling injury, making them highly prone to rot and deterioration. Therefore, harvesting at the right time is extremely important. Generally, in mid-to-late October, when the low temperature drops to around 15 degrees and the tubers have stopped expanding, they can be harvested. When harvesting, it is recommended to choose a sunny day.
The above is an introduction to the high-yield cultivation and management techniques for purple sweet potato. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.