Detailed Explanation of Key Points of 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, nourishing blood, and fighting cancer. In recent years it has been widely favored by people, and its planting space is extremely broad, but 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.
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 barren soil, and strong resistance to diseases and pests are chosen. After selecting the varieties to plant, dry the seeds, then spray them with 800-fold diluted Xin Gaozhi Mo (new high-fat film). This can both prevent diseases and pests 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, and it is best to choose sandy loam soil that is loose and fertile and rich in organic matter. Plow it 40-50 cm 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 potassium fertilizer. Broadcast the farmyard manure on the ground surface and apply the chemical fertilizer 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, making the underground tubers expand faster and increasing the yield. At the same time, also pay attention to the prevention and control of diseases and pests. Although purple sweet potato has few diseases and pests, you must not be careless. Underground pests include cutworms and red ants. During plant growth, topdress in time. If the base fertilizer is sufficient, do not topdress 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 tolerance of the tuberous roots to decrease due to the effects of low-temperature chilling injury, making them highly prone to rot and deterioration, so harvesting at the right time is extremely important. Generally, in mid-to-late October, when the low temperature drops to around 15°C 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 keep following us.