When will sweet potatoes be planted and harvested? How do you fertilize it?

Sweet potato is a kind of crop with high yield and strong adaptability. it has been planted all over the world, and its roots and tender stems and leaves are good ingredients. When will the sweet potatoes be planted and harvested? How do you fertilize it?

When will sweet potatoes be planted and harvested?

Different regions, varieties, sweet potato planting time and harvest time are also different, let's learn about it.

Planting time:

1. Variety

Spring potato seedlings began to grow in late January, autumn potato seedlings in mid-late June, and early winter potato seedlings in early and mid-August.

two。 Area

In the north, the best planting season should be at the end of August in autumn. Relatively speaking, the south is the most suitable for planting after October in winter. Of course, it is also possible to plant at the end of March and the beginning of April every year.

Harvest time:

If it is planted in May, then the best harvest time is late September or early October. If it is planted in June, then the best harvest time should be around late October. This needs to be judged according to the planting time in different areas, but generally speaking, October is the best time for sweet potato harvest. At this time, the climate temperature usually stays around 12 ℃ on average, that is, when the climate temperature reaches an average of 15 ℃, it is the best time for sweet potato harvest.

How to fertilize sweet potatoes?

1. Light application of nitrogen fertilizer

Overweight nitrogen fertilizer will cause the stems and leaves to grow excessively and consume a lot of nutrients. When the fruit is expanded in the later stage, the nutrition supply is insufficient, which leads to the small fruit and the decrease of yield.

two。 Apply more phosphorus and potassium fertilizer

Phosphate fertilizer can loosen the soil and promote flower bud differentiation, while potassium fertilizer can promote the stout stem and fruit expansion of sweet potato. Third, re-apply organic fertilizer. Tuber crops such as sweet potatoes like organic fertilizer, which has stable effect and strong stamina, which is incomparable with chemical fertilizer.

4. Skillful application of foliar fertilizer

Ten days before the fruit expansion, the leaves must be sprayed with potassium dihydrogen phosphate.

5. Make good use of biological fertilizer

As the saying goes, "if you want to grow good land, you must first raise good soil." Biological bacteria can play a very unique role in disease resistance and soil improvement.

Because sweet potato is the vegetative body of asexual reproduction, there is no obvious maturity standard and harvest time. However, the harvest sooner or later has a certain impact on yield, quality, processing and utilization, so sweet potatoes must be harvested in time.