The root cause of the disease is explored according to the phenomenon of orchid leaves

01, the leaf color is yellowing, the growth is normal: the light is too strong.

02. The leaves turn yellow and the new buds are small: excessive light, lack of nitrogen fertilizer or lack of humidity.

03. Yellowing and shedding of old leaves: normal aging and returning seedlings or improper planting.

04. Scorching at the tip of new leaves: fertilization, overdose or unclean plants.

05. Both new and old leaves are scorched: excessive dampness and heat in the basin, few rotten roots or bluegrass roots in the root system, and unqualified plant material.

06, new bud rotten bud: plant material is not clean, bacteria are too many rotten buds.

07. There are scorched spots on the leaves and no yellow on the periphery: scorching spots in the hot sun.

There are chloasma on the leaves: caused by heat on the roots.

09, there are spots on the edge of the leaf with water immersion: excessive humidity in the basin, excessive air humidity, incomplete environmental disinfection or leaf rot; poor ventilation and ventilation.

10, there are irregular maculae on the leaves, mesophyll tissue necrosis and depression: virus disease, also known as "Byras".

There are small yellow spots on the leaves: caused by shell insects or red spiders.

12. The surface of the leaf appears purple-black, and the back of the leaf is still green: caused by low temperature frost. Deficiency of phosphate fertilizer can also occur.

13, leaf dehydration, false corm crepe,: caused by long-term over-drying and dehydration in the basin.

14, the leaf dries up from the leaf node, and breaks from the leaf node, the leaf tail is still green, but dehydrated, the Reed head can sprout in the coming year: serious water shortage in the growing period