After storms and floods, the affected citrus should be restored as far as possible. The measures are as follows:
Drain the drains and clean the sludge. For flooded fields, open ditches and ditches, quickly eliminate water from the park, lower the water table, and speed up the drying of the topsoil. Wash the leaves of fruit trees flooded in time to spray water on sunny days to prevent dehydration and death of fruit trees. For plants that have been in the flooding for a long time, the diseased branches, diseased leaves, and diseased fruits caused by the flooding should be promptly cut off, and cleared and buried or burned. In addition, cut the wound during trimming to reduce the wound area to facilitate wound healing.
For the fruit trees that have been washed down by the flood, the tree body should be straightened as soon as possible, and a support should be set up to support and fix it. The exposed root system should be re-buried in the soil and be well covered with soil. For fruit trees with severe rooting, they must be cut and cut to reduce evaporation and prevent death. If the branches have already been broken, they must be cut off in time.
Timely soil. Because the ground is often compacted after storms and floods, soil compaction, drastically decreased ground temperature, poor soil permeability, and weakened respiration of roots of fruit trees, can easily lead to oxygen deprivation in the root system, especially in citrus and other fruit trees, which can easily kill roots. When the top soil of the garden is basically dry, loose soil should be promptly carried out.
Root dressing outside. After the tree is damaged, the root system is damaged, and the ability to absorb fertilizer and water is weak. It is not appropriate to immediately apply root fertilizer. 0.1% to 0.2% of potassium dihydrogen phosphate, 0.3% urea, and foliar fertilizers can be used for extra-root dressing. Every 5 days or so, spray 2 or 3 times. After the tree potential recovers, the soil and manure urine, cake fertilizer or urea will be applied to make new roots.
After the storm flood and waterlogging disasters easily lead to the outbreak of various citrus diseases and insect pests, pesticides should be used in time to prevent pesticide spraying.
Red spider: Use 73% Kotel EC 2000x, 10% Involucin EC 4000x, Broom Net 1500-2000x, 15% Ketone Ketone 3000x, 20% Kelp 1500 Double fluid, 20% Weiling 2500 Borrow fluid.
Rust niches: During the damage period, 80% of Dasung M-45 WP can be sprayed with 600-800 times liquid.
Scale insects: 25% of Optix 1500x, 25% of buprofezin 1000 to 1500x, 30% of strong killing microemulsion, 45% of malathion eucalyptus 1000x, 40% of speed cull Times of liquid, 25% of dying net emulsion 900 times, 35% of crack 800 times.
Ulcer disease: 77% can be used to kill WP 600 times, 80% Super State 800 times, 10% World High Water Dispersible Granule 6000 to 7000 times, 50% Garrinone WP 800 times And so on, 72% of streptomycin soluble powder 3000 times.
Anthracnose: 77% Donning 500-fold, 80% Tassel 800-fold, 70% thiophanate-methyl 800-fold, and 75% chlorothalonil 800-fold.
Resin disease: 80% of Dasong M-45 WP can be used 600 times, 1% Wuycin 600 times, and 77% can be 2000-800 times. The orange trees that have symptoms of gluing on the stalk should be treated with drugs after the lesions have been removed.
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