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Lotus Root Terminal Bud Seedling Raising and Transplanting Cultivation Technique

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1. Terminal bud seedling raising: The area ratio of seedbed to transplanting paddy field is 1:10. In early to mid-April, apply 1800 kg of decomposed organic fertilizer per mu to the seedbed, deep plow 25 cm, then level it, and build ridges 30 cm high and 25 cm wide around the perimeter. Select plump, thick, pest-free seed lotus roots with intact terminal buds, cut off the terminal buds and gently press them into the seedbed by hand at a density of 1 plant per 8 sq cm, with the bud tips exposed above the bed surface, then fill with 2-3 cm of water to soak into the bed, then build arched frames 1 m high with bamboo strips, cover with plastic film, and press and seal the edges tightly. After 3 days, inside the seedbed

1. Terminal bud seedling raising: The area ratio of seedbed to transplanting paddy field is 1:10. In early to mid-April, apply 1800 kg of decomposed organic fertilizer per mu to the seedbed, deep plow 25 cm, then level it, and build ridges 30 cm high and 25 cm wide around the perimeter. Select plump, thick, pest-free seed lotus roots with intact terminal buds, cut off the terminal buds and gently press them into the seedbed by hand at a density of 1 plant per 8 sq cm, with the bud tips exposed above the bed surface, then fill with 2-3 cm of water to soak into the bed, then build arched frames 1 m high with bamboo strips, cover with plastic film, and press and seal the edges tightly. After 3 days, maintain 2 cm of water in the seedbed, control the temperature at 22-25°C, and pay attention to ventilation and cooling at midday.

2. Field selection and fertilization: Select fields with fertile soil, soft upper soil and firm lower soil, and strong water and fertilizer retention for planting lotus roots. Apply 2500-2800 kg of decomposed organic fertilizer, 130-150 kg of plant ash, and 30-35 kg of superphosphate per mu to the lotus field, then deep plow 35-38 cm, and harrow finely 3-5 times, maintaining 8-10 cm of water.

3. Timely transplanting: When the lotus seedlings grow 2 leaves and adventitious roots sprout from the terminal bud stem nodes, remove the film and harden the seedlings for 2-3 days. When transplanting, the terminal buds in the first row face south, the terminal buds in the second row face north, and the terminal buds in the two rows near the field ridges all face inward; the spacing between plants and rows is 1.3-1.5 m, with plant spacing of 0.8-1 m, and 512-555 plants are transplanted per mu.

4. Water management: After transplanting, if the temperature is low and unstable, the irrigation water must not exceed the leaf surface; after the temperature rises and stabilizes, water about 8 cm deep can be applied. In May, the water depth should be maintained at 16-18 cm; in June, the water depth should be maintained at about 25 cm; in July, the water depth should be reduced to 12-15 cm.

5. Reasonable fertilization. 10-12 days after transplanting, apply 500-600 kg of decomposed human manure and urine and 20-25 kg of cake fertilizer per mu; from late May to the end of June, apply urea 3 times, 8 kg per mu each time; each topdressing must be done after the dew has dried, and fertilizer must not be scattered on the leaves and stems; in early July, apply 130 kg/mu of plant ash once.

6. Cultivation and weeding: About 15 days after transplanting, before the standing leaves cover the whole field, stir the thin mud between the rows by hand to make the soil soft, and pull out weeds and tread them into the mud.

7. Pest and disease control: Use 2 kg of gypsum mixed with 100 kg of water per mu and spray to prevent water cotton disease, use 4% Bordeaux mixture to control rot disease, and use 1000-1200 times dilution of dimethoate to control aphids, once every 6-8 days, for a total of 3 sprays.

8. Harvesting: In mid to late August, when the upper leaves of the whole field are green, the middle leaves are yellow, and the bottom leaves are withered, tender lotus roots can be harvested for fresh eating. However, lotus roots used as seed should preferably be harvested in the spring of the following year.

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