Task: Translation
Input (Czech): Popisuje se kultiva n  substr t a zp sob jeho v²roby. Tento kultiva n  substr t obsahuje rozm ln n  rostliny, vybran  ze skupiny zahrnuj c  k° dlatky, C.sub.4.n.-rostliny a rostliny z rod  Cannabis a Dicksonia, a je vhodn² jako n hrada ra eliny.\
Output (English): In the present invention there is described a cultivation substrate and a process of its preparation. The cultivation substrate of the invention contains comminuted plants being selected from a group consisting of knot grass, Ci4 plants and plants of the Cannabis and Dicksonia genuses, and is suited as a peat substitute.