Orchard fertilization is an important part of apple tree management and an important measure to ensure high yield and quality of apples. Apple trees need more mineral nutrients, including 14 elements such as nitrogen, phosphorus, potassium, calcium, magnesium, sulfur, iron, zinc, copper, manganese, boron, molybdenum, chlorine, and cobalt. These elements are all necessary for the growth of apples. Such as:
Nitrogen: It is an important component of protein and chlorophyll in plant cells, which can promote vegetative growth, such as branches, leaves, fruits, etc., making the shoots thick, thick green leaves thicker, so when the nitrogen deficiency, the leaves are small, yellow, weak Falling and falling fruit weight. However, too much nitrogen will cause the branches and leaves to be long and unsubstantiated, affecting the differentiation of flower buds, causing poor coloration and lowering of storage.
Phosphorus: Phosphorus can promote flower bud differentiation and flowering and fruit setting, improve fruit quality, favor root growth and development, and increase root drought resistance and saline-alkaline resistance.
Potassium: beneficial to increase the fruit, increase coloring, promote the transformation and transportation of carbon hydration compounds in the tree body, improve fruit quality and storage. In the absence of potassium, the fruit is small, the leaves are small, the leaves are yellowish green, the veins between the veins are green, the leaf margins are upward, and when the leaves are severe, the leaf edges are dry and coke.
Calcium: Physiological balance in the tree, and can improve the storage of the fruit. When calcium deficiency occurs, it is prone to physiological diseases, such as actual bitter pit disease and water heart disease.
Iron: It can promote the formation of chlorophyll. In the absence of iron, the leaves lose their green. In particular, the tips of new shoots are distinct and become "yellow leaf disease."
Boron: It can promote flower bud differentiation and root growth and development, and can also contain sugar content and vitamin content in Nanchang City. When the boron deficiency is severe, the fruit is deformed and the pulp is corked.
Zinc: can promote vegetative growth. In absence, the top leaf blade is narrow, the internodes are short, the leaflets are densely clustered, and the leaves are thick and brittle, known as "lobular leaf disease". Frequent irrigation, more wounds, heavy shearing and re-feeding prone to zinc deficiency.
Nitrogen: It is an important component of protein and chlorophyll in plant cells, which can promote vegetative growth, such as branches, leaves, fruits, etc., making the shoots thick, thick green leaves thicker, so when the nitrogen deficiency, the leaves are small, yellow, weak Falling and falling fruit weight. However, too much nitrogen will cause the branches and leaves to be long and unsubstantiated, affecting the differentiation of flower buds, causing poor coloration and lowering of storage.
Phosphorus: Phosphorus can promote flower bud differentiation and flowering and fruit setting, improve fruit quality, favor root growth and development, and increase root drought resistance and saline-alkaline resistance.
Potassium: beneficial to increase the fruit, increase coloring, promote the transformation and transportation of carbon hydration compounds in the tree body, improve fruit quality and storage. In the absence of potassium, the fruit is small, the leaves are small, the leaves are yellowish green, the veins between the veins are green, the leaf margins are upward, and when the leaves are severe, the leaf edges are dry and coke.
Calcium: Physiological balance in the tree, and can improve the storage of the fruit. When calcium deficiency occurs, it is prone to physiological diseases, such as actual bitter pit disease and water heart disease.
Iron: It can promote the formation of chlorophyll. In the absence of iron, the leaves lose their green. In particular, the tips of new shoots are distinct and become "yellow leaf disease."
Boron: It can promote flower bud differentiation and root growth and development, and can also contain sugar content and vitamin content in Nanchang City. When the boron deficiency is severe, the fruit is deformed and the pulp is corked.
Zinc: can promote vegetative growth. In absence, the top leaf blade is narrow, the internodes are short, the leaflets are densely clustered, and the leaves are thick and brittle, known as "lobular leaf disease". Frequent irrigation, more wounds, heavy shearing and re-feeding prone to zinc deficiency.
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