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

The causes of leaf center rot of new orchid plants:

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

Improper use of ② water, fertilizer and medicine: mainly due to excessive dosage when watering, fertilizing and spraying pesticides, the time is not suitable or the rot caused by burning leaf base caused by not drying in time after the end of operation.

The invasion of ③ pathogen: it is mainly caused by black rot that causes the leaf sheath of the new plant to change from yellow to black, and even leaf core rot.

④ external force injury: rot caused by external forces that damage the leaf base or heart leaf.

Prevention and control methods of leaf core rot of new orchid plants: rational application of fertilizer; watering, fertilization and spraying should not be too much, not too late, so that the heart leaves should be dried in time; do not use too much force when removing abandoned leaves and wiping leaves; once the orchid is invaded by pathogens, spray it with 1000 times of carbendazim, carbendazim, diexamethasone and streptomycin, or 3000 times of chloramphenicol and penicillin.