What if BBK's leaves wither?

), long-term fertilization. Long-term failure to apply nitrogen fertilizer or change pots and water leads to the lack of nutrients such as nitrogen in water, which leads to the thinning, thinning and yellowing of branches and leaves. It is necessary to replace new cultivation water in time and gradually apply dilute decomposed liquid fertilizer or compound flower fertilizer.

(2) excessive fertilization. If too much fertilizer is applied, new leaves will be thick and uneven, and old leaves will fall off in brown. Therefore, fertilization should be stopped immediately, and more water should be changed to make the fertilizer lose, or the flowerpot should be emptied immediately, and the bulbs should be washed with water and replanted in the flowerpot.

(3), hot and high temperature. If the flowers are placed in a high temperature place and exposed to strong light, it is easy to cause the tips and edges of young leaves to burn or the leaves to fall off. It needs to be moved to a well-ventilated shade in time.

(4) excessive shading. If you spend a long time in a cool place or a place with insufficient light, it will lead to yellowing of the branches and leaves.

(5) Soil and water are alkaline. Due to the lack of soluble iron and other elements that can be absorbed by water, leaves will gradually turn yellow. Acidic soil and water should be used when planting, and alum fertilizer should be poured frequently during the growth period.

(6), airtight. Excessive application of nitrogen fertilizer, lush growth of branches and leaves, long-term non-pruning, insufficient illumination of branches and leaves in the inner room, easy to cause leaves to yellow and fall off. Fertilization should be reasonable, and pruning should be strengthened to make it ventilated and transparent.

(7), air drying. When the indoor air is too dry, flowers often have dry tips or scorched leaves. Attention should be paid to increasing air humidity by spraying water and covering plastic film.

(8) Improper temperature. In winter, the room temperature is too low, and the flowers get cold, which causes the leaves to turn yellow, and when it is serious, it turns yellow and dies. If the room temperature is too high, the transpiration of plants will be too strong, the water and nutrients in roots will be in short supply, and the leaves will turn yellow. Please pay attention to adjust the room temperature in time.

(9), pests and diseases. Leaf spot caused by fungi and other pathogens is easy to cause local necrosis of leaves and yellow spots or plaques. In severe cases, the leaves are completely yellow and fall off, and yellow-green mosaic spots appear after the leaves are infected by mosaic virus. Suffer from scale insects, red spiders, etc. The leaves will also become partially yellow and withered, or even the whole leaves will turn yellow and fall off. All should be sprayed in time to prevent and control.

(10), strong stimulation. Too high concentration of pesticides used in pest control, or toxic gas pollution in the atmosphere, or sudden pouring of cold water when the temperature is high, are easy to cause local yellowing, burning and even death of the whole plant. Therefore, we should pay attention to the rational use of pesticides and try to eliminate air pollution sources. Avoid watering flowers with cold water around noon in midsummer. Finally, the yellow leaves of potted flowers are sometimes caused by one reason, but often by many factors. Correct diagnosis can prescribe the right medicine.