The main points of the latest course on fertilization techniques and methods of Hawthorn

Hawthorn we are very familiar with it, it is rich in nutrients, a wide range of uses, of which we are familiar with the timely appetizing effect. Hawthorn is extremely adaptable and can grow well in poor land, but for yield and quality, it is important to master fertilization techniques when planting hawthorn. So how should hawthorn be fertilized? Xiao Bian sorted out the key points of hawthorn fertilization technology, let's understand together.

1, flowering topdressing

Hawthorn flowering needs a lot of nutrients to make it bloom more, then the amount of fertilizer required accounts for a quarter of the total amount of fertilizer, then fertilizer is mainly nitrogen, then each plant applied urea 0.1-0.5 kg or ammonium bicarbonate 0.3-1.3 kg. According to the growth condition of the plant, phosphorus and potassium fertilizer were applied to make the plant bloom smoothly.

2. Topdressing in the early stage of fruit expansion

At this time, topdressing is to improve the nutritional status of flower bud differentiation. At this time, topdressing should be flexibly controlled according to the soil fertility status, plant growth status and flowering topdressing and fertilization status. Generally, soil fertility is sufficient, plant growth is good, and flower fertilizer can be applied less or not, while on the contrary, soil is poor, flowering fertilizer is less, and general fertilizer application is controlled within 0.1-0.3 kg of urea or 0.3-1 kg of ammonium bicarbonate per plant.

3. Topdressing during fruit expansion period

During fruit expansion, plants need a lot of potassium to transport nutrients, make fruit expand quickly, and reduce the probability of fruit cracking. Therefore, fertilization should be based on potassium fertilizer at this time, with some nitrogen and phosphorus fertilizers to promote fruit growth, improve yield and improve quality. Generally, 0.2-0.5 kg of potassium sulfate is applied per plant, with 0.25-0.5 kg of ammonium bicarbonate and 0.5-1 kg of calcium superphosphate.

4. Base fertilizer application

Basal fertilizer is applied after fruit harvest, and the plant is weak after harvest, and the nutrient consumption is large. At this time, the application of basal fertilizer is to promote the absorption and accumulation of nutrients by the plant, which is beneficial to the differentiation of flower buds. The base fertilizer generally selects decomposed organic fertilizer, and then matches some chemical fertilizers, among which nitrogen fertilizer accounts for half of the total application amount, phosphorus fertilizer accounts for 80% of the annual application amount, and potassium fertilizer accounts for 20%. Base fertilizer is applied by ditching, a ditch of 20-40cm is opened near the root system of the plant, and the base fertilizer is mixed evenly with the soil before being applied into the ditch, so as to avoid the root system directly contacting the concentration and causing root burning.

5. Topdressing outside roots

The above are soil fertilization methods, and there is also a method of spraying diluted fertilizer solution on leaves or fruits using sprayers, called topdressing or foliar spraying. This method has a small amount of fertilizer, but the effect is fast, and the utilization rate is extremely high. According to the growth status of the plant, the topdressing is applied 2-3 times a year outside the root. It can also be applied to the soil. The same fertilizer is diluted with water and sprayed.

The above is hawthorn fertilization technology points, I hope to help you, want to know more hawthorn planting knowledge, please pay attention to us.