1. Ditch drainage and clear the garden. After the flood recedes, when there is still water in the low-lying land of the kiwi orchard, trenches should be dug in time to drain the water to reduce the soil and the air humidity in the garden and accelerate the drying of the topsoil. After draining, remove the silt in time to dry the soil. For trees that have been washed down by floods, they should be straightened as soon as possible. The exposed roots are re-covered with soil, and the mud, debris, and diseased and dead branches and leaves on the branches, leaves and fruits of the tree are removed in time.
2. Shallow tillage to loosen the soil. Soil compaction in the garden after flooding can easily cause hypoxia in the root system. After the kiwifruit garden is slightly dry, the soil should be loosened in time and the tree tray or the whole garden should be plowed. It is not advisable to turn the soil too deep, generally 6-10 cm, so as not to damage the roots, so as to restore the permeability of the soil and promote the formation of new roots.
3. Spray fungicides to prevent pests. Due to the high soil and air humidity, it is easy to cause diseases of branches, leaves and roots, and induce various diseases and insect pests. Therefore, after the accumulation of water in the orchard has subsided, when the weather is clear, the orchard should be protected by spraying insecticides and fungicides in time.
4. Appropriate top dressing. After the kiwi orchard was hit by the disaster, soil fertilizers were severely lost, the root system was damaged, and the ability to absorb water and fertilizer was weakened. At this time, do not immediately fertilize the roots, but foliar fertilization, mainly spraying foliar fertilizers such as potassium dihydrogen phosphate, urea, brassinolide, etc., to strengthen the function of the leaves, enhance photosynthesis and nutrient accumulation of the tree . Pay attention to avoid spraying at noon or during high temperature. The concentration of foliar fertilizer should not be too high, slightly thinner than usual. It can also be used with pest control agents.
If the damage to the orchard is relatively small, you can wait a week after the accumulation of water in the orchard is drained, and then apply nitrogen and phosphate fertilizers to promote the restoration of tree vigor. After one month of water receding, after the tree vigor returns to normal, human and animal manure, cake fertilizer or urea are applied to promote new roots, and some potassium fertilizers should be added in the later stage of the fruit to supplement nutrient supply in time and promote fruit growth.
5. Prune moderately. The roots of waterlogged fruit trees are weak in absorbing fertilizer and water, so dense branches, broken branches, diseased branches, etc. should be cut off in time, and growing branches should be topped to reduce water evaporation of branches and leaves and nutrient consumption of the tree body, and promote the maturity of branches. For trees that are lightly damaged and grow normally, cut off the dead branches and yellow leaves. If the result is too much, part of the fruit can be thinned out. Trees that have been severely affected can be re-pruned appropriately. If there are many fallen leaves, they can be retracted to perennial branches.
6. The tree body is painted white for protection. After the kiwifruit tree is flooded, it is easy to cause a lot of litter and leaves, which exposes the main branches to the hot sun and is prone to sunburn. The main trunk can be whitened. The commonly used formula of whitening agent is: quicklime: water: salt = 10: 30: 0.5.
Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of third parties are involved, please inform this website for handling. phone
Capnometer ETCO2,EtCO2,Capnography Monitor,Contec cms550dl Pulse Oximeter,Contec Pulse Oximeter how to use
Anesthesia Medical Co., Ltd. , https://www.trustfulmedical.com