Chrysanthemums are deeply loved by people for their proud and colorful colors. However, we often find that chrysanthemums are particularly fragile and prone to premature aging during the hot summer months. What is it that makes chrysanthemums so vulnerable to high temperatures?
Imbalance of water metabolismHigh temperaturesUnder these conditions, the transpiration of chrysanthemum is intensified, and the water loss is too fast, if the water is not replenished in time, it is easy to cause the plant to be dehydrated, the leaves are curled and wilted, and then the senescence is accelerated.
Photosynthesis is blocked: High temperature will reduce the activity of certain enzymes in the leaves, affect the normal progress of photosynthesis, and cause the plant to be unable to accumulate nutrients effectively, thereby accelerating the aging process.
Hormonal balance disorders: High temperature will change the hormone balance in the chrysanthemum, such as the increase in ABA (abscisic acid) content, inhibit the effect of growth hormone, and accelerate the aging of plants.
High temperatures are accompanied by drought: High temperature is often accompanied by soil drought, which further aggravates the water stress of chrysanthemums and seriously affects the physiological function of plants.
High temperature and bright light: The combination of high temperature and strong sunlight will not only exacerbate water loss, but also directly burn the leaves and accelerate leaf senescence.
Rational irrigationIn the high temperature season, the soil should be kept moist, but avoid stagnant water, and the water required by the plants should be effectively replenished by watering or spraying in the morning and evening, so as to reduce the negative impact of transpiration on the plants.
Moderate shade: Build a shade net or choose an appropriate planting location to avoid exposing chrysanthemums to high temperature and strong light for a long time, so as to reduce the degree of photosynthesis obstruction and leaf burns.
Scientific fertilizationIn the high temperature season, the application of phosphorus and potassium fertilizer should be increased to improve the stress resistance of plants, and at the same time reduce nitrogen fertilizer to prevent plants from growing too fast and aggravating water consumption.
Improve ventilation conditions: Good ventilation conditions can help chrysanthemums dissipate heat, reduce local ambient temperature, and reduce the impact of high temperature on plants.
Stress-resistant breed selection: When purchasing chrysanthemum varieties, priority is given to varieties with strong heat tolerance, and the adverse effects of high temperature are resisted through the genetic level.
The reasons for the premature aging of chrysanthemum at high temperature are complex and diverse, involving physiological mechanisms such as water metabolism, photosynthesis, and hormone balance, and are also affected by the superposition of environmental factors. Through scientific and reasonable irrigation management, shading and cooling, fertilization strategies and the selection of heat-tolerant varieties, we can effectively alleviate the stress of high temperature on chrysanthemums, so that they can maintain their vigorous vitality in the hot summer and continue their wonderful blooming in autumn. As long as we care with our hearts, chrysanthemums can show tenacious vitality even in the face of high temperatures, adding a different color and fun to our lives. Chrysanthemums