Timely drainage of citrus trees after being immersed in water can easily cause root anoxia and respiratory restriction. Light rot, bark black, wilting leaves, yellow leaves or fallen leaves, and the whole plant is dead. Therefore, after the flood retreat, it is necessary to clear the drainage ditch and drain the accumulated water.
In the fight against pests and torrential rains, fruit trees, shoots, and leaves often leave a lot of wounds, and it is particularly prone to induce outbreaks of various diseases and pests, such as anthrax, canker, and spider mites. For the affected citrus groves, we must always pay attention to their growth conditions. We should spray copper preparations, mancozeb bactericides, and control the fruit trees after the disaster to reduce the outbreak of pests and diseases.
After top-dressing and root-impacting, citrus roots have poor absorption capacity and can be sprayed with 0.3% potassium sulfate plus 0.2% zinc sulfate on the foliage once a week for 2 to 3 times to promote new roots and restore tree vigor.
Pruning tipping is necessary to pour roots in citrus orchards to speed up evaporation. In the severely afflicted citrus orchards, if litter is found and the tree is growing weak, the weak branches will be cut off and the new shoots will be promoted after the damage is eliminated and the tree vigor is restored.
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