可能是浇水施肥不当， 造成土壤盐份积累，根部受到伤害。
1。 用室温自来水缓慢浇30分钟，以便解释冲洗盐份，盆低要流水。
2。暂时不换盆也行(从照片看)，它喜微酸性，喜光。
3。上部土壤干透后，再浇第一次水。用淘米水浇，一般不要施肥。
Minor Toxicity: Ingestion of these plants may cause minor illnesses such
as vomiting or diarrhea. If ingested, call your doctor.
Dermatitis: The juice, sap, or thorns of these plants may cause a skin rash
or irritation. Wash the affected area of skin with soap and water as soon
as possible after contact. The rashes may be very serious and painful. Your
doctor if symptoms appear following contact with the plants.
