What if the leaf core of the new orchid plant is rotten?

The reason for the decay of the leaf center of the new orchid plant:

① abnormal growth: mainly due to the imbalance of nitrogen, phosphorus and potassium in the fertilizer applied, the lack of trace elements and the use of excessive growth-promoting elements, which caused petiole soft paralysis, browning and rot.

2. Improper use of water, fertilizer and medicine: mainly due to excessive dosage of watering, fertilization and pesticide spraying, improper time or failure to dry in time after operation, resulting in burning of leaf base.

(3) Pathogenic bacteria: mainly black rot caused by the invasion of new plant leaf sheath from yellow to black, even leaf center rot.

④ External force damage: caused by external force damage to the leaf base or heart leaves and rot.

The method for preventing and controlling the decay of the leaf center of a new orchid plant: applying fertilizer reasonably; watering, fertilizing and spraying should not be too much each time, and the time should not be too late, so that the heart leaves can be dried in time; not too much force should be exerted when removing the abandoned leaves and wiping the leaves; once the orchid is invaded by pathogenic bacteria, spraying 700 - 1000 times of solution of Tuijunling, carbendazim, dicosone and streptomycin, or spraying 3000 times of solution of chloramphenicol and penicillin in time.