How to remedy the yellowing leaves of Fortune Tree 1. Three core solutions for treating yellow leaves 1.1 Precise watering techniques The root system is like the lifeline of plants, and improper watering is the main cause of yellow leaves. When the soil surface turns white, use a bamboo stick to deeply insert 10cm to detect the humidity, maintaining the principle of "seeing dry, seeing wet." In summer, the immersion basin method is used to replenish water, and in winter, atomizing spraying is used to accurately control the amount of water. 1.2 The intelligent fertilization strategy applies decomposed soybean cake water and potassium dihydrogen phosphate 1:2000 solution alternately every month. Stop fertilizing immediately when the veins are found to be yellow, wash the soil in the basin three times with clean water, and replace it with new soil containing vermiculite when severe. 1.3 Light and shadow control rules receive full sunshine in spring and winter, and set up a double sunshade net in summer and autumn. Turn the flowerpot 15 degrees every day and use the fill light to maintain the light intensity of 8000Lux to avoid the formation of yin and yang leaves. 2. Analysis of the whole process of resurrecting rotten roots 2.1 Root system diagnosis standard Healthy root systems are milky white and have a diameter of>2 mm. When brownish water-stained roots are found, immediately use disinfectant scissors to cut obliquely along the area 1 cm above the necrotic tissue to retain the active point of the main root. 2.2 The sterilization and root-promoting plan uses hydrogen peroxide (3%) to soak for 20 minutes and potassium permanganate (0.1%) to disinfect twice. Wrap the roots with water moss and combine with B1 nutrient solution (50ppm) to spawn new roots. 2.3 The key points for transplanting and maintenance are to choose red pottery pots with pine needle soil (40%)+ perlite (30%)+ charcoal (30%) substrate. Bagging for moisture in the first two weeks, gradually increasing the ventilation period, and turning to routine maintenance after new leaves germinate. 3. Anniversary maintenance calendar, basin replacement in March| Water control in June| Fertilizer supplementation in September| Keep warm in December, combined with monthly leaf dust removal and quarterly ferrous sulfate irrigation. Establish a maintenance log to record key indicators such as temperature/humidity/number of new leaves.