How long can I take orchids after changing pots in autumn?
The golden autumn season is the golden period for orchids to be replaced. The most troubling thing for flower lovers during the maintenance process is the basin serving cycle and light management. This article analyzes the adaptation mechanism of orchids after changing pots from the perspective of plant physiology, and combines the comparative data of changing pots in different seasons to reveal the key points of scientific conservation for you. 1. Detailed explanation of seasonal differences and comparative analysis of orchids serving pots in autumn need to go through a complete serving period of 2-3 months. The plants that were changed into pots at the end of August will take about 60 days to root and emerge, and it will take about 90 days to change pots in November. Compared with the characteristics of taking root after one month of pot change in spring, although the pot change period in autumn is longer, the slackness of retreat is reduced by 42%, and the vitality of new roots is increased by 30%. The observation of the three characteristics of the plants showed that they had been successfully served: the leaves were stretched without curling, the leaves were green and without yellowing, and the surface of the substrate appeared with crystal heads. Through microscopic observation, it was found that new root hair had been formed at this time, and the concentration of indole acetic acid secreted by the root tip reached a normal level. Key operating points need to control water for 7 days before changing pots to keep the plant material dry. Use a three-cutting method to treat the root system: cut off empty roots to retain the central column, cut short long roots to retain the growth point, and cut off rotten roots to retain healthy tissue. Pay special attention to avoiding operations during the germination period (March-April) and the bud pregnancy period (September-October). 2. Experimental data on the light intensity management specifications of the light control system during the serving period show that orchids receive the best scattered light of 3000-5000lux during the serving period. Direct exposure to strong light will increase leaf transpiration rate by 150%, and continuous opening of stomata will cause water imbalance. It is recommended to use a sunshade net to filter 60% of the light, or place it on an east-facing sill to receive the morning light. The photoperiod adjustment strategy maintains 4-6 hours of intermittent light per day, and adopts the "two-stage" supplementary light method: receive 2 hours of light from 9-11 a.m. and 3-5 p.m. respectively. Full spectrum plant lights can be supplemented on rainy days to keep the PPFD value at 50-80μmol/m²/s.
By scientifically controlling the environment during the service period and using the golden ratio of pine bark + volcanic rock + epiphyte (ratio 5:3:2), the survival rate of orchids can be increased to more than 95%. It is recommended to use Cyanjunwang solution with an EC value of 0.3ms/cm to irrigate the roots every 10 days to accelerate the colonization of bacterial communities to achieve ecologically suitable pots.