How to recover Huilan
Rejuvenation of cymbidium is a key issue in the maintenance process, especially the rejuvenation of toothpick seedlings requires professional skills. Through five core maintenance dimensions, this paper systematically analyzes the operating points of the entire process from basic planting to post-cultivation, helping Lanyou achieve counterattack on weak seedlings. 1. Lay the foundation for scientific planting 1.1 Technical points for deep planting use the reed head covering method for deep planting, and the soil covering needs to exceed the reed head by 1-2 centimeters. This operation can form a miniature greenhouse effect, promote the development of aerial roots, and increase the germination of new roots by 40%. 1.2 The plant material gold ratio plan recommends using a mixed substrate of humus soil: pine scale: perlite =5:3:2, and supplementing 0.2% decomposed sheep manure particles every month. This ratio takes into account both fertilizer retention and air permeability, and the EC value is stable in the range of 1.2-1.8mS/cm. 2. Precise nutrition management plan 2.1 Use 50ppm indole butyric acid solution to irrigate roots during the new root germination period (20 days after planting) at the critical time point of fertilization; apply N-P-K=20-20-20 water-soluble fertilizer when the new seedlings are 15cm, and the concentration is controlled at 800 times the solution, and the effect is better when combined with 0.1% seaweed extract. 2.2 In special stages, additional potassium dihydrogen phosphate (1500 times solution) is added in autumn and winter and sprayed on the leaves every 15 days, which can significantly improve the cold resistance of plants. Used together with EM inoculant, it can effectively prevent the occurrence of soft rot. 3. Intelligent environmental control strategies 3.1 Dynamic model for moisture control establishes a "three-look" watering method: look at the plant material (the surface layer is 2cm dry), look at the weather (replenish water when the humidity is less than 60%), and look at the plants (new leaves are slightly wilted). In summer, the dipping basin method is used (10 minutes each time), and in winter, the fine-spout pot is used for targeted watering. 3.2 Light intensity gradient management Carry out dark room maintenance in the first week of planting, and gradually transition to a scattered light environment of 5000-8000Lux. Use a sunshade net to control and ensure direct light for 4 hours a day (before 10 a.m.) to stabilize the chlorophyll content above 2.8mg/g.
Through the implementation of the above-mentioned systematic rejuvenation plan, toothpick seedlings can complete the plant type upgrade within 6-8 months. It is recommended to record growth data every month and use growth regulators such as brassinolide to achieve breakthrough growth of 3-5 generations of new seedlings added every year.