After the typhoon, late rice production in Beihai was significantly impacted, with varying degrees of damage across different areas. In response, local farmers implemented tailored recovery measures based on the specific conditions of their rice fields and planting methods.
**I. Recovery Measures for Direct-Seeded Rice and Young Seedlings**
1. **Timely Cleaning of Seedlings**: As water recedes, it's essential to clean the leaves and remove any dead seedlings. Using a gentle stream of water, wash away debris and dirt from the leaves to improve photosynthesis and reduce leaf overlap. This should be done when the seedlings are just barely exposed above water. If the water returns too quickly, it can cause lodging and slow growth.
2. **Water Level Control**: After submersion, the seedlings become weak and vulnerable. To prevent wilting or death, maintain a 10–13 cm water depth and drain the field by 4 PM. Then, re-water with shallow irrigation in the morning to support recovery.
3. **Fertilizer Application**: Once the field is lightly flooded, apply 2–3 kg of urea and potassium chloride per acre. Alternatively, use 8–10 kg of urea or 10–15 kg of compound fertilizer per acre to stimulate new growth and promote the development of white roots. Transplanting should be done promptly to ensure healthy regrowth.
**II. Recovery Measures for Late Rice Seedlings (Daejeon)**
1. **Quick Drainage**: Clear drainage channels immediately to minimize damage. If the weather is cloudy, one-time drainage is acceptable. However, during hot, sunny days, only expose the upper part of the plants to the surface and drain the field in the afternoon to avoid sun exposure. This helps restore normal growth. Also, remove floating debris to prevent leaf rot and further damage.
2. **Manual Uprighting of Lodged Seedlings**: Gently lift each lodged plant and secure its roots to prevent further lodging. Be careful not to cut off damaged leaves, and use a sprayer to apply a solution to the plants, helping them regain photosynthetic and respiratory functions more quickly.
3. **Timely Water Management**: After the floodwater recedes, the soil remains saturated. Drain excess water to allow the soil to dry slightly, helping the floating mud settle and encouraging new root growth.
4. **Increased Fertilization**: Apply nitrogen-based fertilizers along with phosphorus and potassium. Within three days after drainage, use 8–10 kg of urea or 15–20 kg of compound fertilizer per acre. The amount depends on how long the plants were submerged—less if damage is minor, more if the impact was severe.
**III. Replanting and Crop Adjustment**
For paddy fields that have been submerged for a long time and where seedlings have rotted, plowing and replanting should be done as soon as possible. If the damage is too severe, consider transplanting new seedlings or switching to other crops like vegetables, sweet potatoes, or corn, depending on the field’s condition. This ensures that the land remains productive and viable for future harvests.
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