Detailed Explanation of Key Points of Scientific Fertilization Techniques for Hawthorn

We are all quite familiar with hawthorn; it is rich in nutrients and widely used, and its well-known effect of stimulating the appetite is something we all recognize. Hawthorn has extremely strong adaptability and can grow well even in poor soil, but for the sake of yield and quality, mastering fertilization techniques when planting hawthorn is crucial. So how should hawthorn be fertilized? The editor has put together the key points of hawthorn fertilization techniques; let's take a look together.

1. Fertilization during the flowering period

During the flowering period, hawthorn needs a large amount of nutrients to produce more flowers. At this time, the fertilizer requirement accounts for one quarter of the total fertilizer amount. Fertilization at this stage is mainly nitrogen-based, applying 0.1-0.5 kg of urea or 0.3-1.3 kg of ammonium bicarbonate per plant. Then, according to the plant's growth condition, apply a certain amount of phosphorus and potassium fertilizer to ensure smooth flowering.

2. Fertilization before the fruit enlargement stage

Fertilization at this time is intended to improve the nutritional condition for flower bud differentiation. At this stage, topdressing should be flexibly controlled according to soil fertility, plant growth condition, and the fertilization applied during the flowering period. Generally, if soil fertility is sufficient, the plant grows well, and a lot of flower fertilizer was applied, then less or no fertilizer may be applied; conversely, if the soil is poor and little fertilizer was applied during the flowering period, then more should be applied. Generally, the fertilization amount is controlled at 0.1-0.3 kg of urea or 0.3-1 kg of ammonium bicarbonate per plant.

3. Fertilization during the fruit enlargement stage

During the fruit enlargement stage, the plant needs a large amount of potassium to transport nutrients, enabling the fruit to expand rapidly and also reducing the chance of fruit cracking. Therefore, fertilization at this time should be mainly potassium fertilizer, combined with some nitrogen and phosphorus fertilizer, to promote fruit growth, increase yield, and improve quality. Generally, apply 0.2-0.5 kg of potassium sulfate per plant, combined with 0.25-0.5 kg of ammonium bicarbonate and 0.5-1 kg of superphosphate.

4. Application of base fertilizer

Base fertilizer is applied after the fruit is harvested. After harvesting, the plant's tree vigor is relatively weak and nutrient consumption is relatively high. Applying base fertilizer at this time is to promote the plant's absorption and accumulation of nutrients, which is beneficial to flower bud differentiation. For base fertilizer, fully decomposed organic fertilizer is generally chosen, combined with some chemical fertilizers, among which nitrogen fertilizer accounts for half of the total application amount, while phosphorus fertilizer accounts for 80% of the annual application amount and potassium fertilizer accounts for 20%. Base fertilizer is applied by trenching. Dig a 20-40 cm trench near the plant's root system, first mix the base fertilizer evenly with the soil and then apply it into the trench, so as to avoid the roots directly contacting the concentration and causing root burn.

5. Foliar fertilization

The above are all soil fertilization methods. There is also a method of using a sprayer to spray a diluted fertilizer solution onto the leaves or fruit, called foliar fertilization or leaf spraying. This method uses a small amount of fertilizer but has quick results and extremely high utilization efficiency. According to the plant's growth condition, carry out foliar fertilization 2-3 times per year, and it can also be combined with soil topdressing by diluting the same fertilizer with water before spraying.

The above are the key points of hawthorn fertilization techniques. We hope they can help you. If you want to learn more about hawthorn cultivation knowledge, please stay tuned to us.