How to raise orchids after being replanted with empty roots
Conservation after replanting empty roots of orchids is like post-operative rehabilitation for patients, which requires accurate grasp of the three major factors of water, light and fertilizer. Based on 20 years of gardening experience, this article will systematically explain the key points of rejuvenation of empty-rooted orchids and help you revitalize the fragile orchid roots. 1. The golden rule of moisture control 1.1 The new standard for dry and wet cycles has increased the sensitivity of hollow root orchids to moisture by 40%. It is recommended to use the "three-finger detection method": insert the index finger, middle finger and ring finger side by side into the substrate, and pour it thoroughly when the second knuckle cannot feel the moisture. Compared with conventional orchids, the watering amount needs to be reduced by 30%, and it is best to maintain the moisture content of the substrate at 45%-50%. 1.2 The environmental humidity compensation plan can be combined with the use of ultrasonic humidifiers during the root recovery period to maintain the air humidity at 65%-75%. Use an atomizing spray can to spray the back of the leaves every morning. The water temperature must be consistent with room temperature to avoid stimulation from temperature differences. 2. Coordinated management of light and ventilation 2.1 Light intensity gradient recovery should be strictly shaded for the first 15 days after replanting, and a double sunshade net should be used to filter 80% of the light. Gradually transition to a single-layer sunshade net on the 16th-30th day, add 30 minutes of scattered light every day, and avoid direct contact with noon strong light. 2.2 It is recommended to adopt the "three-way ventilation method" for the construction of a three-dimensional ventilation system: install a micro circulation fan 20cm above the plant, open convection windows on both sides, and use a hollow basin frame at the bottom. Pay attention to avoid blowing directly on the plants and keep the air flow rate within the range of 0.3- 0.5 m/s. 3. Precise nutrient supply plan 3.1 The foliar nutrient gold ratio uses potassium dihydrogen phosphate (concentration 0.05%) and alginate (1:2000), and spray the back of the leaves every Tuesday and Friday from 9 to 10 a.m. Adding 3 drops of medical (G-Y) can extend nutrient absorption time and increase utilization by 70%. 3.2 After 30 days of replanting with special root activation treatment, a special EM inoculant for orchids (diluted 500 times) can be applied and roots can be irrigated once a month. Combined use of pine needle extract (pH 5.5-6.0) can effectively promote the differentiation of new root primordia.
After 3-6 months of careful maintenance, the survival rate of hollow root orchids can reach more than 85%. The key is to grasp the "slow word strategy" and avoid being eager for success. It is recommended to take a comparative chart of root growth every month, establish a maintenance log, and scientifically adjust the maintenance plan by observing the development progress of the crystal head.