Potted fruit trees! Why do potted fruit trees generally need to be repotted once every 2 4 years? Ho

Potted fruit trees are easy to propagate, low cost, beautiful tree posture, flowers and fruits, long ornamental period, often used for environmental greening and interior decoration, and are loved by many families. Due to the limited volume of the container, the root system of potted fruit trees will be limited after a period of growth, which will affect the growth and development of the aboveground parts, thus greatly reducing the ornamental value.

1. Several situations that need to be repotted.

1. Perennial plants grow in pots, and with the increase of tree age, the root systems overlap and crowd each other in the pots, which affects the development of new roots and significantly weakens the ability to absorb nutrients. In order to change the above situation, the repotting treatment should be done, and the fertilization management should be strengthened at the same time, and the root system should be properly pruned, so that the plants can be fully renewed and play a role in rejuvenation.

2. As the plant grows, the original pot is no longer suitable for the requirements of plant growth, and the volume must be expanded to meet the absorption of nutrients by the root system. At this time, a larger basin should be replaced.

3. The original potting soil is absorbed and utilized by the plants for a long time, and the mineral nutrients are lacking, which is easy to produce the symptoms of nutrient deficiency. When the physical properties of the potting soil deteriorate, the aeration becomes poor, which can lead to poor plant growth. In both cases, all the old soil in the pot should be replaced and replaced with new culture soil.

4. When it is found that there are pests and diseases in the root system, the root system should be repaired, and the repotting treatment should be done in combination with disease prevention and insect control.

Second, the time to change the pot.

Available in both spring and autumn. In spring, deciduous fruit trees are carried out before the first root system begins to grow, and evergreen fruit trees are generally carried out during the rainy season. In autumn, it should be done after the autumn shoots of potted fruit trees have stopped growing and before the root system has a new growth peak.

3. How to change pots.

In order to not hurt the root or less damage to the root as the principle, the specific operation method depends on the size of the pot.

When changing the soil of the pot with a diameter of less than 40 cm, first hold the base of the plant with the left hand, light the cypress pot wall with the right hand, and then slowly put the pot down, and push the bottom tile of the small hole at the bottom of the pot with the thumb to separate the pot soil from the pot wall, and then lift the pot up, clamp the pot with both feet, and pull up the plant with the potting soil with both hands.

In 2-4 years, the fruit trees have almost exhausted the nutrients of the net potting soil.

Repotting improves the nutritional conditions and makes the tree grow strong.

Repotting is carried out every year before dormancy in winter or before germination in spring, and the original soil is replaced with a new arrangement of cultivation soil (containing applied organic fertilizer and pesticides to kill underground pests). When pouring the pot to change the soil, first use the bamboo piece to rotate along the inner wall of the benefit, then turn the pot upside down, hold the apple plant and the soil mass with your hands, and pour it out under the action of gravity. Then use a sharp knife to cut off the 3-4cm thick old soil and roots around the soil mass, and then put it into a new pot with cultivation soil, fill the surrounding area with new cultivation soil and compact, and water enough.