Wet planting method is better than dry planting method, and it is recommended to use wet planting method.

That is, 5 ~ 10 days before planting, the lotus pond is drained, sowed after water infiltration, and water is added to the water layer of 3 ~ 5 cm after sowing. This method is beneficial to increase the ground temperature and promote the development of early buds.

Lotus seeds should be buried in the soil, with the tips of lotus roots inward, and lotus seeds should not be exposed to the soil. The planting direction of lotus root head should be consistent, and the lotus root head should face into the pool around the lotus root pool to avoid the lotus root whip sticking out of the pool. When planting lotus root, the lotus root head should be deep, the lotus root handle should be shallow, and the terminal bud and tail of lotus root seeds should be at an angle of 15 degrees downward, so as to facilitate sunlight irradiation and promote germination.

2. Water level regulation

The front is shallow, the middle is deep and the back is shallow. The suitable water level of shallow water lotus is 10 ~ 20cm, and the maximum water resistance depth is 30 ~ 50cm.

Water in time after planting, improve soil temperature, promote early development of seedlings, and master the principle of less watering and frequent watering. The appropriate water depth is 3 ~ 5 cm, and the water layer is 6 ~ 7 cm after floating leaves appear.

2 ~ 3 vertical leaves rose to 10 cm. When the stems and leaves of lotus root grow vigorously, the water layer can be gradually increased, which can generally rise to 15 ~ 20 cm, which is beneficial to plant growth, windproof and cooling. Drain water in time after rainstorm, reduce water level, prevent stem and leaf from rotting, and increase water temperature and ground temperature, which is beneficial to underground rhizome growth.

After the appearance of terminal leaves, the lotus root began to knot, and the water layer should be gradually reduced to 5 ~ 10 cm to promote lotus root knot. Adjust the water level gently, not too fast, or it will affect the output. Alternate management of water conservation and shallow water during the formation of lotus root.

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The key to supplementing nutrition is topdressing. Lotus root plants are huge and have strong fertilizer tolerance. Generally, 3-5 tons of fully decomposed soil miscellaneous fertilizer such as chicken manure and pig manure, 25-35 kg of organic and inorganic compound fertilizer, 20 kg of biological bacterial fertilizer, 50 kg of fine sand and 50 kg of quicklime are uniformly applied per mu.

1. Seedling fertilizer

(Lotus root growth 1 ~ 2 vertical leaves): In order to promote the vigorous growth of plants, urea 15 ~ 20kg is generally applied per mu, or compound fertilizer (20-8- 15 or 16-9-20 or other similar formula)/kloc is applied per mu.

2. Strong seedling fertilizer

(Lotus root has 3-5 vertical leaves): 25-35kg of compound fertilizer (20-8- 15 or 16-9-20 or other similar formula) per mu.

3. Before the bank closes

35-40kg compound fertilizer per mu (20-8- 15 or 16-9-20 or other similar formula). If the tender lotus root is harvested, this fertilization is omitted. If the old lotus root is harvested, it can be topdressing according to its growth.

4. Bud stage

Combined with disease prevention, foliar fertilizers such as boron fertilizer and potassium dihydrogen phosphate are sprayed on the leaves.

5. Lotus root fertilizer

(After flowering): Apply 20-8- 15 or 20kg of other high-nitrogen and high-potassium compound fertilizers per mu, and spray foliar fertilizers such as potassium dihydrogen phosphate on the leaves.

Drainage properly before topdressing to reduce the water level, washing leaves in time after fertilization to prevent burning leaves, and keeping the water layer 1 ~ 2 days after fertilization is beneficial to improve the fertilizer utilization rate.