Blueberry fertilization techniques

Blueberry is a highly nutritious fruit, which is deeply loved by consumers in daily life. In recent years, there is more and more demand for blueberry in our country, and the planting area of blueberry is increasing year by year. Blueberries are oligotrophic plants, which are very important for fertilizer application and fertilization techniques, so how to apply fertilizer to blueberries? Let's take a look at the detailed introduction.

1. Characteristics of fertilizer requirement

Blueberry is more sensitive to the type and amount of fertilizer, it likes ammonium nitrogen, the absorption of ammonium nitrogen is far more than nitrate nitrogen, so we should pay attention to fertilization. Attention should be paid to chlorine in fertilization. Blueberries are extremely sensitive to chlorine. Application of chlorine-containing fertilizers may cause chlorine poisoning and, in severe cases, death. In addition, blueberries also avoid alkali, and alkaline fertilizers should not be used when fertilizing. Blueberries need a small amount of fertilizer, and each plant needs only 30 grams of nitrogen, 10 grams of phosphorus and 20 grams of potassium every year. Therefore, attention should be paid to fertilization. Excessive fertilization should not cause damage or even death to trees.

2. Fertilization time

Many growers pay great attention to the fertilization time of blueberries, usually applying base fertilizer before the soil of the Autumn Equinox branch is frozen, mostly when the leaves fall in November. In addition, the blueberry should be fertilized many times during the whole growth period, the first application 10-15 days before germination to promote flower bud differentiation; the second application in flowering and fruit setting, usually in May, to make the plant blossom and bear more fruit and increase the fruit setting rate; the third application 7-10 days before harvest to promote fruit expansion and improve yield and quality.

3. Fertilization method

The specific fertilization method should be determined according to the condition of the tree and the fertility of the soil. The root system of blueberry is weak, and the root system is mainly concentrated on the outer edge of the crown, so the concentrated part of the root system should be used to induce the root system to develop outward. Expand the absorption area as much as possible. Base fertilizer generally uses ring fertilizer method, strip ditch fertilizer method, reasonable application of base fertilizer, fertilization should not harm the root system, especially the new root. Topdressing is mainly drip irrigation, which can be watered and fertilized many times in sprouting, fruit and harvest period. the advantage of this is that the fertilizer concentration is low, it has been absorbed by the root system, and there are few impurities to maximize the fertilizer efficiency.

The above is the introduction of blueberry fertilization technology, hope to help you, want to know more related knowledge, please follow us.