The technique of transplanting lotus root with terminal bud

1. Raising seedlings with terminal bud: the ratio of seedling bed to transplanting paddy field is 1:10. In the first and middle of April, 1800 kg of rotten organic fertilizer was applied to each mu of seedling bed, which was leveled after turning 25 cm deep, and was surrounded by a ridge of 30 cm high and 25 cm wide. Select the fat, sturdy, disease-free and intact lotus root, cut off the terminal bud and gently press it into the seedling bed according to the density of 1 plant in 8 square centimeters, the tip of the bud is exposed to the bed, then pour 2-3 cm deep water into the bed, and then use bamboo pieces to form a 1-meter-high arch frame, covered with plastic film, and the surrounding pressure is tightly closed. After 3 days, keep 2 cm deep water in the seedbed and control the temperature at 22-25 ℃. Pay attention to ventilation and cooling at noon.

2. Field selection and fertilization: select lotus root with fertile soil, soft upper soil and solid lower layer, and strong water and fertility conservation. In the lotus root field, 2500-2800 kg of rotten organic fertilizer, 130-150kg of plant ash and 30-35kg of calcium superphosphate were applied per mu, then turned 35-38cm deep and raked 3-5 times to keep water 8-10cm deep.

3. Transplanting at the right time: when the lotus root seedling grows 2 leaves and adventitious roots sprout on the stem node of the apical bud, the film is opened to refine the seedling for 2-3 days. When transplanting, the first row of terminal buds to the south, the second row of terminal buds to the north, near the ridge of the two rows of terminal buds are all toward the field, plant spacing of 1.3-1.5 meters, plant spacing of 0.8-1 meters, transplanting 512-555 plants per mu.

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

5. Rational fertilization. 10-12 days after transplanting, 500-600 kg of manure and 20-25 kg of cake fertilizer were applied per mu, urea was applied 3 times from late May to the end of June, each time 8 kg per mu, each topdressing should be carried out after the dew was dry, fertilizer should not be scattered on the leaf stalk, and 130 kg / mu of plant ash was applied once in early July.

6. Ploughing and weeding: about 15 days after transplanting, stir the thin mud between rows by hand before the standing leaves are full of fields, make the soil soft, pull out weeds and step into the mud.

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

8. Harvest: fresh lotus root can be harvested in mid-late August when the upper leaves are green, the middle leaves are yellow and the bottom leaves are withered. But the sown lotus root should be harvested in the spring of the following year.