How to raise lily seedlings
Lily seedlings are deeply loved by flower friends for their elegant attitude, but the maintenance during the seedling period directly affects the quality of later flowering. This article systematically analyzes the entire process of lily seedling cultivation from substrate ratio to shape correction to help you create upright and healthy plants. The four-factor soil ratio technique for scientific cultivation of lily seedlings uses the golden ratio of legus: perlite: coal ash =5:3:2, and 10g of bone meal is added to each liter of substrate to enhance calcium. This structure not only ensures air permeability with porosity>35%, but also continuously releases nutrients, which is especially suitable for the development needs of lily fleshy roots. Temperature control points establish a temperature difference system between day and night: 22-25℃ during the day promotes photosynthesis, and lowering it to 15-18℃ at night suppresses respiratory consumption. In winter, a double-layer insulation method is used-a 3cm foam board is placed on the bottom of the basin and a transparent plastic bag is placed on the outer layer to stabilize the ground temperature above 8℃. The light control plan sets a combination of east-facing window sill + sunshade net to ensure soft light exposure for 3 hours in the morning. The light intensity is controlled within the range of 8000-12000Lux. When the new leaf unfolding rate reaches 70%, it can be gradually increased to 5 hours of light. The "See Dry, See Wet 2.0" method is implemented in the water and fertilizer management cycle: water is poured thoroughly when the surface soil is 1 cm dry, combined with water-soluble fertilizer with N-P-K=15-30-15, and 800 times dilution solution is applied every 10 days. Hydroponics plants need to change water every week and add 3 drops of special nutrient solution to maintain the EC value of 1.2-1.8mS/cm. Triple countermeasures for correcting excessive length optical correction method When the stem is tilted more than 15°, a one-sided light supplement strategy is adopted: an LED plant light is set up in the opposite direction of plant bending, and 450nm blue light is added for 2 hours every day to stimulate phototropic growth regulation. The physical support technique uses plastic-coated iron wire to make spiral brackets, and uses the figure 8 binding method to fix the stalks. Keep the spacing between straps at 3-5cm, reserve 1 cm of growth space, and adjust the support angle every two weeks. Chemical control method When the plant height is 15cm, spraying 50ppm paclobutrazol solution on the leaves and applying it continuously twice at an interval of 10 days can effectively shorten the internode length by 20%-30%. In conjunction with picking treatment, 4-5 functional leaves are retained to promote branching.
Through a comprehensive plan of soil improvement, environmental regulation, physical correction and chemical regulation, we can not only solve the problem of excessive lily seedlings, but also cultivate high-quality plants with thick stems and full flower buds. Regularly observing the changes in the angle of the growth point and timely intervention in the early stage of tilting can greatly enhance the ornamental value.