After transplanting rice, it is crucial to implement timely field management practices to encourage rapid seedling establishment and early growth. The following key technical measures are recommended:
1. **Water Management for Transplanted Seedlings**: Immediately after transplanting, maintain a deep water layer to help the seedlings establish quickly. Use a "deep water for live roots, shallow water for irrigation" approach to ensure good root development and early emergence. After sowing, regularly apply water to keep the field moist, promoting faster germination and growth. Additionally, clear and level the furrows to ensure even water distribution and create a shallow water layer during the 2-leaf and 1-heart stage, which helps accelerate seedling development.
2. **Timely Fertilization**: Once the green plants return to the rice field, apply a base fertilizer promptly. A typical rate is 5–7.5 kg of urea per mu. About 7–10 days after the first top-dressing, assess the field condition and leaf color. Apply a balanced or strengthening fertilizer as needed, using 3–4 kg of urea per acre. For fields with weak seedlings, poor tillering, or machine-transplanted plots, additional tiller fertilizer should be applied to support healthy growth.
3. **Weed Control**: Within 5–7 days after transplanting, apply herbicides such as butyl benzyl compounds to manage weeds effectively. After application, maintain a shallow water layer for 5–7 days to enhance the effectiveness of the treatment and prevent weed regrowth.
4. **Pest and Disease Prevention**: Rice planthoppers (Laodelphax striatellus) often occur in large numbers, leading to high poisoning rates and increasing the risk of rice stripe disease. To prevent this, apply insecticides immediately after planting, within 3–5 days. Repeat the application every 4–7 days. For indica rice, three to four treatments are usually required, while hybrid rice typically needs two applications.
In cases where seedling transformation is delayed due to improper fertilization, adverse weather, or other unfavorable conditions, use appropriate growth regulators to stimulate healthy development and improve overall crop performance.
By following these practices, farmers can significantly improve seedling survival, promote vigorous growth, and lay a strong foundation for a successful rice harvest.
Laboratory Equipment
Laboratory Equipment,Laboratory Autoclave Class,Moisture Analyzer,Laboratory Analytical Instruments
CHANGZHOU RICHGENIUS MEDLAB CO.,LTD , https://www.rich-gen.com