Longan ring cutting method and matters needing attention

Longan is very popular with consumers in the market, and the market benefit is extremely high. In the process of longan planting, ring cutting is indispensable. At this time, it is a relatively safe and effective measure to promote flowers and protect fruits, which is suitable for the growing fruit trees. The effect is also better for young trees. So what ring of longan should be cut? How should we proceed? Let's get to know it with the editor.

1. Ring cutting effect

Longan trees often have a large number of fruit drop in the young fruit stage, which is because the tree needs to consume a lot of nutrients during flowering, resulting in nutrient deficit, and the root system is in the peak period of growth, competing for a lot of nutrients. The lack of nutrients produced by leaf photosynthesis results in the lack of sufficient nutrients for fruit growth, resulting in a large number of fruit drop. In order to reduce the fruit drop of longan, the nutrients needed for fruit growth can be ensured by pruning or thinning flowers and fruit and light ring cutting, so as to improve the fruit setting rate.

2. Ring cutting time

For longan tree ring cutting, we should grasp the right time, for weak tree ring cutting too early, if we encounter low temperature and dry climate after ring cutting, it will restrain the root system extension, greatly weaken the root system absorption of fertilizer and water, and the phenomenon of falling leaves will occur in bad weather. In addition, the rainy and sunny climate after ring cutting will cause the wound to heal quickly, unable to prevent the upward transport of nutrients, and the plant growth is exuberant, which can not achieve the effect of controlling the shoot in the later stage. For vigorous plants, early ring cutting will affect the physiological differentiation of flower buds and ultimately affect the yield, so longan ring cutting should be carried out before and after the Winter Solstice according to the tree strength.

3. Ring cutting method

Longan ring cutting should choose a ring cutting knife with a sharp edge, if it is not sharp, the sieve tube in the concave part of the trunk can not be cut, resulting in the phenomenon of "crossing the bridge" and the effect of ring cutting is poor. If the knife is not thin or the blade is not sharp, the work efficiency is low, the bruising of the ring cutting wound is serious, the healing time is prolonged, the tree potential is weakened and overweight, and in serious cases, the old leaves yellowing and falling off early, or even the phenomenon of skin explosion. During ring cutting, the upper ring of the trunk is cut once or the spiral ring is cut 1.25 times, the depth is up to the sow, but the xylem is not damaged. The ring cutting distance should not be less than 2 cm, otherwise the root system will be starved too much and the tree will be too weak to be remedied.

4. Points for attention

After the plant is cut in the ring, the absorption of fertilizer and water by the root system is reduced, at this time, sufficient water should be maintained, and the fertilizer should also be based on organic fertilizer. in order to prevent excessive hunger of the root system, foliar fertilizer should be sprayed in time in continuous rainy days. Longan can not be cut ring at any time, according to the growth of longan tree, it can only be cut 1-3 times a year, and the old leaves yellowing and falling off and long-term decline occur 1-2 months after ring cutting, which is a normal phenomenon.

The above is the introduction of longan ring cutting methods and matters needing attention, hope to help you, want to know more related knowledge, please pay attention to us.