Causes and treatment methods for holding yellow lotus leaves
With its lotus-shaped leaf disc and hanging characteristics, Zizhi Lianhua has become a favorite for meaty lovers. However, the sudden yellowing of the leaves often leaves flower friends at a loss, which often implies four major maintenance misunderstandings. This paper systematically analyzes the causes of yellow leaves and provides targeted solutions through the form of diagrams + solutions. Analysis of light demand characteristics caused by lack of light caused by yellow leaf crisis. As Crassulaceae is fleshy, it takes 4-6 hours of soft light to hold lotus flowers every day. Full sunshine mode is recommended in spring and autumn, and in summer, a sunshade net needs to be used to filter 30% ultraviolet light between 10 and 14 o'clock. Insufficient light can lead to the decomposition of chlorophyll, which is reflected in the first yellowing of the bottom leaves. Smart fill light solution It is recommended to match a fill light for the north-facing balcony and set automatic fill light for 3 hours per day (6500K color temperature). Rotate the flowerpot to adjust the angle of 45° every week to ensure uniform light reception. In winter, the sunshade can be removed to receive direct light. Water imbalance leads to metabolic disorder. The watering standard uses the "three-finger test method": insert the index finger, middle finger and ring finger into the second knuckle of the pot soil. If there is no sense of moisture, water can be done. The water volume of pottery pots is 20% higher than that of plastic pots, and the watering interval needs to be shortened when particulate soil accounts for more than 70%. Seasonal watering strategy follows the principle of "dry and thorough watering" in spring and autumn. In summer, water is slowly injected along the basin wall in the evening, and in winter, spray water is replaced. When the air humidity is>70%, suspend watering and use an electric fan to enhance ventilation. Nutrient deficiency causes yellow leaf phenomenon. Fertilizer ratio plan During the growth period (March to October), a slow-release fertilizer of 12-6-8 nitrogen, phosphorus and potassium is used, and 20 grains are sprinkled per pot. Combine it with alginate foliar fertilizer (diluted 1500 times) once a month to avoid leaf cores when spraying. Stop fertilizer in winter to avoid burning roots. Element deficiency identification skills When nitrogen is deficient, the old leaves are yellowed as a whole, and bean cake water is supplemented; iron deficiency is manifested as yellowing between new veins, which can be corrected by EDTA chelate iron; when magnesium is insufficient, yellow spots appear, which can be improved by spraying magnesium sulfate solution. Temperature fluctuations trigger stress response constant temperature control points are equipped with an intelligent temperature control system. The temperature during the day is maintained at 22±3℃ and the temperature at night is not lower than 15℃. In summer, a water curtain cooling system is used to keep the temperature difference within 8℃. When using heating mats in winter, make sure that the bottom of the flower pot is 3 cm away from the heat source. In extreme weather, 5% calcium chloride solution should be applied three days before the cold current strikes to enhance stress resistance, and iced mineral water (12-15℃) should be sprayed in the morning on consecutive high temperatures to physically cool down. Place moisture-proof trays in the plum rainy season, and built-in quicklime absorbs moisture.
By accurately controlling the four major elements of light, warm water and fertilizer, and regularly observing leaf conditions, the lotus flower can return to green green within 1-2 growth cycles. It is recommended to establish a maintenance log to record plant changes after each intervention and gradually form a personalized maintenance plan. When the new leaves are completely stretched and the leaf margins are flushed again, it means that the treatment measures are effective.