1、 Basin soil hardening

Reason: the soil is the basis for the growth of rubber trees. If the pots are not changed for a long time, the soil will harden and airtight, and the root system is difficult to grow normally inside, resulting in difficulty in breathing and suffocation. The ability to transport water and nutrients is hindered, and the leaves will fall off now

Measures: change the flowerpot every spring. If you don't change the soil for a long time, loosen the soil in time to maintain the air permeability of the soil

2、 Improper water and fertilizer

Reason: during the growth process of rubber tree, if the applied water and fertilizer are unreasonable, it likes large fertilizer and large water. It does not apply fertilizer and water for a long time. The lack of nutrients leads to weak growth and yellow leaves. Excessive application will also be affected, causing a burden on the root system, which will lead to rotten roots

Measures: reasonable application of water and nutrients, specific adjustment, reduction of dosage or appropriate application

3、 Infectious disease

Reason: if the maintenance is not appropriate, the rubber tree will suffer from disease and cause the leaves to fall

Measures: after the diseased leaves are found, spray the agent in time, once every 7-10 days and continuously for 2-3 times, so as to eliminate the bacteria and promote the recovery of rubber trees