Fertilization methods of Sweet Potato

Sweet potatoes can be said to have saved a lot of lives in the past, so now they don't want to eat very much for the older generation. However, many young people are very interested in sweet potatoes, and there is a great market demand for all kinds of non-staple foods derived from sweet potatoes. So now the planting area of sweet potato is very wide. So how do we fertilize it in planting? The following editor has brought you the fertilization method of sweet potato, let's have a look!

1. Apply sufficient base fertilizer

Base fertilizer is the key fertilizer to ensure the healthy growth of sweet potato at seedling stage and even the whole growth period. When applying base fertilizer, we should give priority to farm manure and compound fertilizer. In general, the proportion of farm manure is about 70%, and about 3000 kg of farm manure is applied per mu, combined with an appropriate amount of calcium superphosphate and other compound fertilizer. The application of base fertilizer is usually carried out with the work of soil preparation, fully mixing the soil and going deep into the soil. Compound fertilizer is mainly applied in holes, which is convenient for sweet potato seedlings to absorb nutrients in time and improve the survival rate of sweet potato seedlings.

2. Topdressing and extracting seedling fertilizer

The main purpose of raising seedling fertilizer is to meet the nutrition needed for the growth of seedlings and to enhance the growth ability of seedlings. The main fertilizer for raising seedlings is nitrogen fertilizer, which is carried out together with seedling replenishment about 4 days after seedling planting. In the application of seedling fertilizer, we should pay attention to the fertilization position, do not directly contact the roots of seedlings, prevent root burning, affect the growth of seedlings, should be about 10 cm away from the seedlings to apply holes. At the same time, we should also pay attention to control the dosage to prevent excessive dosage from causing fertilizer damage. After fertilization, it is necessary to cover a layer of fine soil and pour enough water to promote the growth of seedlings.

3. Apply manure to manure

After the sweet potato entered the strong vine period, its growth rate accelerated, the nutritional demand of the underground part increased, and the tuber gradually formed. So in this period, we should increase the leaf area of the plant and enhance the light and ability. The strong vine fertilizer was applied after the sweet potato seedlings were planted for about a month, and the strong vine fertilizer was mainly nitrogen fertilizer and potassium sulfate. The amount of fertilizer should be controlled according to the soil fertility and the growth of seedlings. Those with sufficient basal fertilizer and good seedling growth can be applied less appropriately to prevent excessive nutrition and lead to the prosperity and growth of sweet potatoes, otherwise more fertilizer should be applied to meet the nutritional needs. Then, while topdressing, we should also do a good job of watering, strengthen ploughing and weeding, improve soil permeability and prevent weeds from grabbing nutrients.

4. Topdressing manure

Trailing fertilizer is mainly to promote the growth of sweet potato vines, which is usually applied about 3 months after planting according to the actual situation. The main fertilizer of vine fertilizer is potassium fertilizer, which can effectively improve the growth ability of leaves and promote the growth of stems and leaves of sweet potato plants. Strengthen photosynthesis, increase the accumulation of photosynthetic matter in the plant, and provide sufficient nutrition for the expansion of sweet potato tubers. At the same time, we should also pay attention to control in the dosage, to prevent excessive dosage, resulting in fertilizer damage. Water should be watered once after topdressing to advance the time of fertilizer effect.

The above is a brief introduction to the fertilization method of sweet potato. Fertilization of sweet potato is very important to its growth. Improper fertilization will seriously affect the growth of sweet potato and reduce its yield. That's all for today's introduction. This article is for reference only. Thank you for your reading and support.