Detailed Explanation of the Latest High-Yield Cultivation and Management Techniques for Purple Sweet Potato
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 resisting fatigue, resisting aging, enriching the blood, and fighting cancer. In recent years it has been widely favored by people, and the planting space is extremely broad, but if you want to achieve high yield, management in every aspect is extremely important. Let us take a look together at the high-yield cultivation techniques for purple sweet potato.
1. Select good varieties
Purple sweet potato has high nutritional value and a fairly 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 barren soil, and strong resistance to pests and diseases are chosen. After selecting the variety to plant, dry the seeds, then spray them with 800-fold diluted Xin Gao Zhi Mo solution. This can both prevent pests and diseases and strengthen the respiration of the seeds, improving the germination rate.
2. Apply sufficient base fertilizer
Purple sweet potato is suitable for growing on plots with relatively high terrain and convenient drainage and irrigation. 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 form 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 potash fertilizer. Broadcast the farmyard manure on the surface, apply the chemical fertilizers in furrows, and while fertilizing, also broadcast some phoxim to prevent 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 vessels of the underground tubers become thicker, making the underground tubers expand faster and further increasing the yield. At the same time, pay attention to the prevention and control of pests and diseases. Although pest and disease problems in purple sweet potato are few, you still must 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 stage. 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. Harvesting too early will reduce the yield, while harvesting too late will cause the storage roots to suffer from low-temperature chilling injury, leading to reduced storage tolerance and making them highly prone to rotting 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 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 follow us.