What is the reason for osmanthus trees and leaves?
As one of the top ten famous traditional flowers in China, the osmanthus tree is deeply loved for its rich aroma and auspicious meaning. However, the problem of dry leaves often occurs during the maintenance process, which not only affects the ornamental value, but also may endanger the health of the plant. This article systematically analyzes the three general causes and provides solutions to help you recreate the fragrance of Dangui. 1. Imbalanced light management leads to dry leaves 1.1 Pathogenic mechanism of insufficient light. Osmanthus positive plants require 6 - 8 hours of direct light every day. When light is insufficient, chloroplast development is blocked, and photosynthetic efficiency is reduced, resulting in leaf dehydration. In particular, new leaves will be the first to appear scorched leaf margins. 1.2 The scientific light filling plan moves the potted plants to the southbound balcony or open area in the courtyard, and the surrounding obstructions need to be trimmed for ground-planted plants. Full sunshine is guaranteed in spring and autumn, and shade is appropriately covered from 11 to 15 o'clock in summer. New buds can germinate 7 - 10 days after supplementary light. 2. Poor air circulation causes pathological changes 2.1 The hazards of a closed environment show that harmful gases such as ethylene can easily accumulate in confined spaces and hinder transpiration. It is manifested by browning of the tips of old leaves, followed by embrittlement and falling off of the entire leaves, and in severe cases, it is accompanied by coal pollution infection. 2.2 Ventilation optimization measures Indoor maintenance needs to ensure that the area of a single vent is> 0.5 ㎡, and the air is replaced once every 2 hours. Combine thinning of crossing branches to maintain crown permeability. Using a circulation fan can increase the air flow rate by 30%. 3. Humidity imbalance induces dry leaves 3.1 Humidity sensitivity characteristics of osmanthus trees are native to the Yangtze River Basin, and the optimal air humidity is 60 - 75%. When it is below 40%, the stomata are closed and water metabolism is unbalanced. The incidence of dry leaves during the heating period in northern China is as high as 82%. 3.2 The precise humidification method adopts the "basin water storage method": the outer container is filled with moss, and the inner basin bottom is insulated by pebbles. Combined with leaf spray in the morning and evening, the humidity in the small environment can be stabilized at more than 55%. 4. Advanced conservation recommendations regularly test the soil EC value (preferably maintained at 0.8 - 1.2mS/cm) and apply decomposed cake fertilizer quarterly. Combined with the use of EM inoculants to improve the rhizosphere environment, the thickness of leaf wax layer can be increased by 30%.
By systematically regulating the three major factors of light, ventilation and humidity, and cooperating with scientific fertilization, the incidence of dry leaves can be reduced by 90%. It is recommended to establish a maintenance log to record temperature and humidity changes and plant responses, and gradually form a personalized maintenance plan.