Pollution-free Dryland Management Technology
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September 19 23:22:57, 2025
The dry land cultivation of lotus is an efficient farming method developed for pond areas in Minamata, where traditional water-based techniques are not always feasible. This innovative approach involves manually adjusting the water level to raise the ground temperature, which helps accelerate growth and ensures a stable, high yield. Compared to conventional methods, it requires less investment, delivers quick results, and provides long-term benefits once established.
After planting, the water level should be kept shallow—between 3 to 5 cm—for the first 10 days to help warm the soil and encourage germination. Once floating leaves appear, the water level can be gradually increased to around 25 cm. Throughout the growing season, maintaining a consistent water level is crucial. During heavy rains, timely drainage must be ensured to prevent waterlogging and root damage.
One month after planting, the pedicels (the stalks that support the flowers) should remain intact to avoid rot caused by rainwater seeping into the plant. This careful handling is essential for healthy development.
In terms of fertilization, the topsoil in dry land often has low organic content. Therefore, three rounds of topdressing are typically required during the growing season, following the application of base fertilizer. When the lotus plants have 3 to 5 leaves, apply 20 kg of NPK compound fertilizer. When the vertical leaves fully expand, use 15 to 20 kg of NPK fertilizer per unit area. During the tuber formation stage, applying 20 kg of well-rotted manure along with NPK fertilizer can further enhance growth. It's best to space each topdressing application by at least 10 days to minimize nutrient leaching. Fertilizers should be applied on sunny days, with a shallow water level to help the nutrients penetrate the soil. After application, make sure to rinse the leaves and then restore the proper water level.
Weeding in dry farmland can be challenging, as it may lead to insufficient weed control. In addition to manually removing weeds from the mud, it’s important to regularly remove weeds in the later stages of growth by cutting their stems and removing buds. This practice improves air circulation and increases yield. Also, duckweed and green algae should be removed promptly to prevent them from competing with the lotus plants for nutrients and space.