Qiya qatlam (egri qatlam)

Qiya qatlam (egri qatlam) – daraxt tanasi, kesilgan yog’och mahsuloti yoki shpondagi yog’och tolalari yo’nalishining bo’ylama o’qidan og’ishida ifodalangan yog’och tuzilishidagi nuqson. Masalan: sun’iy qiya qatlam, tabiiy qatlam va hokazolar.