7 Inch Face Access Control,Face Recognition Access Control With Fingerprint,7 Inch Ultra Thin Face Recognition Terminal,Dual Camera Recognition Access Control System Shenzhen BIO Technology Co.,Ltd. , https://www.hfsecuritytech.com
This problem usually occurs with the following symptoms: The primordium is not differentiated, the ear does not grow, and the spherical primordium gradually enlarges. It is also called the boxing ear and the ball ear. The cultivation is called "not open".
the reason
This is mainly caused by the following reasons: poor ventilation when the ear is out; insufficient light; small temperature difference, too deep and too large; the temperature during differentiation is too low.
Countermeasures
The following prevention measures can be taken: the demarcation criteria; the ear bed should not be too deep; the grass curtain should not be too thick; the ventilation in the differentiation phase should be strengthened sooner or later to allow the sun to obliquely irradiate the light to stimulate and promote differentiation; and the production season can be reasonably arranged; The autumn plant is cultivated late to prevent the differentiation period from becoming too cold.
symptom