Post-disaster repair and replanting techniques in cotton fields——sweet potato cultivation techniques

Sweet potato is a resilient crop that can withstand harsh conditions and adapt well to various growing environments. It can be planted using either sweet potato slips or early summer seedlings, and with proper post-planting care, it can produce a high yield. Here are the key techniques for successful sweet potato cultivation: First, planting methods. To make the most of the growing season, plant as soon as the soil has warmed up. The seedlings should be placed horizontally in the soil, not vertically or at an angle. Typically, the slips should be about 20-30 cm long, with 6-8 nodes being ideal for strong growth. Second, planting time. The earlier you plant, the better. It's best to complete planting no later than July 20th to ensure enough time for the tubers to develop properly. Third, field management: 1. Mounding: After the initial planting, create mounds (ridges) using a field tube when the soil is moist but not waterlogged. This helps improve drainage and promotes root development. 2. Fertilization: Combine mounding with early top-dressing by applying 15 kg each of superphosphate and potassium sulfate as a base fertilizer. Later, apply additional nutrients based on the health of the plants. If the leaves grow slowly or turn yellow, apply 4-5 kg of urea per acre to restore vitality. For healthy green foliage, use potassium fertilizer or spray 10 grams of an expansion agent mixed with 75 kg of water to encourage tuber growth. 3. Checking and filling seedlings: Within one week after planting, inspect the seedlings and fill in any gaps to ensure uniform growth. 4. Weeding: Cultivate the field 2-3 times during the growing season. This helps control weeds, improves soil aeration, and supports the healthy development of the sweet potatoes. 5. Drainage: Ensure proper drainage by creating ditches such as Tiantougou, Weigou, and Yaogou. Remove excess water promptly from the field. Sweet potatoes are sensitive to waterlogging, and standing water can lead to root rot and hard tubers, which negatively affect both yield and taste. By following these practices, farmers can significantly increase their sweet potato production while maintaining quality and sustainability.

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