With the departure of spring and the arrival of autumn, we often notice that the green protection plants around us begin to shed leaves. This natural phenomenon not only beautifies our environment but also draws attention to the life cycle of green protection plants. Why do green protection plants shed leaves? And how should we maintain them scientifically?
Reasons for Leaf Drop in Green Protection Plants1. Environmental Factors
Seasonal changes are the main reason for leaf drop in green protection plants. In autumn, as temperatures gradually decrease and daylight hours shorten, these factors prompt plants to enter a dormant state, thereby accelerating leaf shedding. Climate change, wind, and precipitation also affect plant growth, leading to premature leaf drop.
2. Plant's Own Physiological Reasons
Leaf drop in green protection plants is also related to the plant's own physiological mechanisms. During growth, plants continuously produce new leaves while old leaves gradually age and die, which is a part of the plant's life cycle. Hormonal changes within the plant and insufficient nutrient supply may also cause leaves to drop prematurely.
3. Improper Maintenance
During maintenance, if green protection plants are attacked by diseases or pests, or if irrigation and fertilization are not properly managed, it may lead to leaf drop. Over-irrigation can cause root hypoxia, affecting the plant's nutrient absorption; excessive or insufficient fertilization can also impact plant growth.
Strategies for Maintaining Green Protection Plants after Leaf Drop1. Control Watering
For green protection plants, watering should follow the principle of "watering when dry and keeping moist," meaning that watering should occur when the soil surface is completely dry, maintaining the soil moist but not overly wet. In autumn, as temperatures gradually decrease, the frequency of watering should be reduced to prevent root hypoxia due to excessive water.
2. Reasonable Fertilization
Based on the growth needs of green protection plants and seasonal changes, fertilization should be reasonable. In autumn, the use of nitrogen fertilizer should be reduced, and the application of phosphorus and potassium fertilizers should be increased to promote nutrient accumulation in plants and enhance cold resistance.
3. Strengthen Disease and Pest Control
Regularly inspect green protection plants, promptly detect and prevent diseases and pests. If diseases or pests are found, timely measures should be taken, such as cutting off diseased leaves or using pesticides.
4. Pruning and Shaping
Proper pruning of green protection plants, removing sickly and dense branches, helps improve photosynthesis and ventilation, thereby reducing leaf drop.
5. Apply Organic Fertilizer
Organic fertilizer can improve soil structure and enhance soil fertility, which is beneficial for the growth of green protection plants. In autumn, organic fertilizer can be appropriately applied to promote nutrient accumulation in plants.
Leaf drop in green protection plants is a normal phenomenon in nature. Understanding the reasons and adopting corresponding maintenance strategies can help us better protect these beautiful plants. Through scientific maintenance, green protection plants can not only beautify our environment but also bring more green benefits to our lives.
According to data from the "China Urban Greening Annual Report," by 2020, the urban green coverage rate in our country had reached 43.48%. Among them, green protection plants play an important role in urban greening. Paying attention to the growth status of green protection plants and improving maintenance levels are of great significance for enhancing the urban ecological environment.