Scale: long-term watering of plants, impurities in the water will produce white things, usually it is best to use rainwater or well water.
Mold: If the maintenance environment is not ventilated, the water cannot evaporate in time may become moldy, and the upper soil should be cleaned up, and the ventilation should be enhanced to ensure air circulation.
Alkalinization: The content of microorganisms and organic matter in the soil decreases, and a layer of white color appears in the soil compaction.
First, scale
A layer of white material on the surface of the soil in the pot is likely to be scale, if the plant is watered with water for a long time, the surface of the soil is prone to impurities in the water, generally some bleaching powder or disinfectant residues. Usually, if you water it, try to choose well water, rainwater, if it is not very convenient, try to dry the tap water for two days after it is used to water the flowers.
Second, moldy
If it is maintained for a long time in the indoor unventilated position, the water in the pot cannot evaporate in time, it is easy to appear moldy, or often pour some uncorried rice water in the pot, plus the indoor is relatively warm, it is easy to appear moldy, you need to clean out the top layer of soil in time, and strengthen ventilation, improve the number of watering, so that you can reduce the moldy situation.
3. Alkalinization
If the soil surface is white and compacted, it is likely to be caused by soil alkalinization, and after the content of microorganisms and organic matter in the soil decreases, the soil will be compacted and alkalinized, and the saline layer will appear on the soil surface. If you like alkaline soil plants do not need to worry, if you like acidic soil plants, such an environment is not suitable for its growth, after a long time there will be a variety of problems, it is recommended to improve the soil in time, or replace it with new potting soil. Usually when fertilizing, you need to pay attention to it, and you can't apply uncorried fertilizer to it.