Management of Lily after planting

After planting, for the greenhouse, it is mainly the control of light, temperature and humidity, the regulation of soil moisture and the control of diseases and insect pests.

① temperature management: within 4 weeks after planting, the soil temperature should be controlled at 12 ℃ 13 ℃, more than 15 ℃ disadvantageous root. From seedling emergence to flowering stage, the indoor temperature should be increased, 20 ℃ during the day and 15 ℃ at night.

② water management: keep the soil moist, not too dry, too wet, suddenly dry, suddenly wet, should be watered frequently and less.

③ fertilizer management: the fertilizer should be multi-component compound fertilizer. The results of Dutch study in 1997 showed that nitrogen, phosphorus, potassium, calcium and magnesium could be mixed according to the ratio of 10, 1.7, 13.8, 6.4 and 0.34. Thin fertilizer should be applied diligently. Once every 5 days after sprouting, it needs to be applied 10-25 times in a lifetime.

④ light management: the light time is more than 16 hours a day, and the additional light is 4 hours for 6 hours in winter. It is necessary to shade and reduce the light and air temperature in summer, especially during the rooting period.

⑤ supplement CO2 ventilation: we should pay attention to several problems: the contradiction between ventilation and cooling and the contradiction between ventilation and heat preservation. As the suitable concentration of co2 is 600ppm, attention should be paid to CO2 fertilization.

⑥ to prevent lodging: cut flowers not only require large color and elegant fragrance, but also require solid and straight stems with a certain length. The lily has a large diameter, many flowers and tall plants, so there must be facilities to prevent lodging. It is usually a net bracket to prevent lodging. When the lily grows to 20 cm high, the net can be set up. Manual assistance after opening the net to make the lily enter the net evenly. As the height of the plant increases, the net rises upward. It can effectively prevent lodging.

⑦ prevents buds from falling and flower buds from drying up: when the first flower reaches 3cm in length, it can be completely prevented by spraying 0.5-1.0mmol/LSTS (silver thiosulfate) once a week. The application time of STS must be when the first flower bud is 2mm long and 3cm long. Because this period is a specific period of lily bud development to the end of pollen mother cell meiosis, when the ethylene produced by the bud reaches the highest value (the concentration is the highest). On the other hand, the lily buds are extremely sensitive to ethylene, which can cause the buds to mature and fall off. Silver ions have a strong special effect on blocking the action of ethylene at the receptor site of ethylene, so STS works best when the first flower grows to nearly 3 cm long. After the treated flowers were collected (cut flowers), even if the flowers were placed in the environment of 20 ℃ and the concentration of ethylene in the air was 0.5ppm for 24 hours, the buds bloomed normally, indicating that the action of silver ions could be maintained for a long time.