1, cultivate soil
Cultivating soil is very important for the good growth of flowers. Some flowers like slightly acidic soil, while others like weakly alkaline soil. Before planting flowers, we must know their growth habits in order to make a reasonable cultivation soil. It needs loose, fertile and well-drained cultivation soil to raise the sword lotus. For example, humus soil, garden soil, coarse sandy soil and compost can be mixed evenly according to the ratio of 4:3: 1:2 as culture soil.
2. Cultivation methods
To grow lotus flowers, you should choose flowerpots with appropriate size and good air permeability. First, pad the drain hole with broken tiles at the bottom of the pot, then add a small amount of rotten bean cake or bone residue as base fertilizer, then fill in the culture soil to put the plant in, fully expand the root system, add soil and tamp it, water it once, put it in the shade for a week, and then transfer it to normal maintenance.
3, fertilization requirements
The stems and leaves of Lilium davidii grow fast and need more fertilizer, but they can't grow in excessive fertilization. In the spring growth period, fully decomposed cake fertilizer and water can be poured every 15 days to promote the growth of stems and leaves.
In April and May, plants usually begin to bud. If there is a lack of nutrition at this time, plants will grow very thin and rarely bloom or not. Therefore, before the plant is pregnant, it is necessary to apply 1 ~ 2 times of effective phosphate fertilizer to make the plant blossom more and more brightly.
After flowering, plants will enter the vigorous growth period again. At this time, nitrogen fertilizer can be applied to promote the plant to grow new stems and leaves, which is beneficial to the next pregnancy bud flowering.
4, watering method
Lotus belongs to cactus and has strong drought resistance. Don't water too often in the process of maintenance. Water thoroughly in spring and autumn to avoid water accumulation and root rot in the basin.
During the high temperature in summer, it is not advisable to make the basin soil too wet and short of water. When the weather is dry, water can be sprayed around the potted plants to humidify the air humidity. To control watering in winter, just keep the soil slightly wet and dry.
5. Lighting requirements
In spring and autumn, let the water lily fully receive the light. In summer, plants will have a short dormant period. At this time, it is necessary to avoid direct glare and keep the environment ventilated, otherwise it will easily lead to yellowing and withering of stems and leaves. Try to put potted plants in sunny places in winter, so that plants can get more sunshine.
6. Dressing and shaping
The branches and leaves of Lanzhou lily grow vigorously. During the growth period, the redundant lateral buds and new buds at the bottom can be removed, while the thin stems and leaves will be removed to reduce nutrient consumption and ensure that nutrients can be supplied to the robust stems and leaves for flowering.
Lily's stems and leaves are soft and slender, and it is easy to lodging when it grows to a certain height. Therefore, after they grow to a certain height, it is necessary to build a bracket for them and fix the leaves evenly on the bracket, which can increase the ventilation and light transmission between plants, make them not prone to lodging and improve the ornamental effect.
When raising lotus flowers, change pots and soil once every 1 ~ 2 years, and the time for changing pots can be chosen in spring and autumn when the temperature is suitable. First, take the plants out of the flowerpot, remove the soil from the roots, check whether there are rotten roots and prune them. Then change the new culture soil into a basin for maintenance.