METHOD OF CONTROLLING ENVIRONMENTAL CONDITIONS IN THE PROXIMITY OF VEGETATION OR CROPS WITH THE AID OF PROTECTIVE SHEETING, PROTECTIVE SHEETING FOR USE IN THIS METHOD, AND A PROTECTIVE DEVICE COMPRISING SHEETING

摘要

METHOD OF CONTROLLING ENVIRONMENTAL CONDITIONS IN THEPROXIMITY OF VEGETATION OR CROPS WITH THE AID OFPROTECTIVE SHEETING, PROTECTIVE SHEETING FOR USE INTHIS METHOD, AND A PROTECTIVE DEVICE COMPRISINGSHEETING.ABSTRACTA method for controlling the environmentalconditions in the proximity of vegetation or cropsin the cultivation of plants is described in whichuse is made of protective sheets comprising a largenumber of microperforations having each a protrudedrim, said microperforations having a diameterbetween 50 and 2000 µm and being present in adensity of between 25 and 40000 microperforationsper cm2. The invention also relates to plasticssheeting For use in said method and to a protectivedevice for use in a greenhouse provided with suchsheeting.