The best choice for orange tree fertilization is organic fertilizers such as well-rotted animal manure, plant residues, etc. Rich in nutrients, these organic fertilizers improve soil structure, improve soil permeability and water retention, and provide sustainable nutrients for orange trees**. At the same time, the microorganisms and beneficial fungi in organic fertilizers contribute to the health and fertility of the soil.
In addition, orange trees also need the right amount of chemical fertilizer to replenish nutrients. When choosing a fertilizer, the right type and amount of fertilizer should be selected according to the growth stage of the orange tree and the soil conditions. For example, during the growth of orange trees, nitrogen fertilizer can be applied in moderation to promote the growth of the tree and the flourishing of leaves; During flowering and fruiting, the application rate of phosphate and potassium fertilizers should be increased to promote fruit development and improve quality.
The use of water-soluble fertilizers also works well on orange trees. Water-soluble fertilizer refers to fertilizer that can be completely dissolved in water, and its advantages include fast nutrient absorption, good fertilizer efficiency, strong targeting, and easy to use. Through spraying or irrigation and fertilization, water-soluble fertilizer can meet the special nutrient needs of orange trees, correct the symptoms of nutrient deficiency in time, and promote the growth of the tree and the development of fruits. At the same time, water-soluble fertilizer can also improve the utilization rate of nutrients, reduce nutrient waste and environmental pollution.
Orange trees require a variety of nutrients to support their growth and development. Among them, nitrogen, phosphorus, and potassium are the three most demanded elements, also known as "bulk elements". Nitrogen mainly promotes the growth of leaves and branches, increases the synthesis of chlorophyll, and improves the efficiency of photosynthesis. Phosphorus is essential for root growth and fruit development in citrus trees; Potassium helps to improve fruit quality and yield.
In addition to macroelements, orange trees also require some medium and trace elements. Macronutrients include calcium, magnesium, sulfur, etc., which also play an important role in the growth of orange trees. For example, calcium can improve fruit firmness and shelf resistance, while magnesium is involved in chlorophyll synthesis and photosynthesis. Trace elements include zinc, manganese, iron, copper, boron, molybdenum, etc., although the demand is small, but it also has an important impact on the growth and development of orange trees. For example, zinc increases the sugar content and vitamin C content of fruits, and iron is essential for chlorophyll synthesis.
In order to meet the needs of orange trees for various nutrients, fertilizers rich in these elements can be selected for application.
It should be noted that injuries caused by excessive fertilization or improper fertilization should be avoided during fertilization. The amount of fertilizer should be determined according to the variety, growth stage and soil conditions of the orange tree, and follow the principle of "in the right amount, at the right time, in the right way". At the same time, soil testing should be carried out before fertilization to understand the nutrient status of the soil and the lack of elements, so as to select and apply fertilizers in a targeted manner.