PROBLEM TO BE SOLVED: To provide a protection plate for ground cover plant designed so as to highly strengthen a pressure-receiving support part and facilitate propagation of ground cover plants such as lawn.SOLUTION: The protection plate 1 is structured as follows: a number of support parts 7 are set up on a lattice-shaped base plate part 2 along thread parts 3 of the base plate part 2 respectively so as to regularly line up in a standing position the upper parts of the four support parts 7 adjacent to one another centering respective intercrossing parts 4 of the thread parts 3 of the base plate part 2 are connected to one another via a first connection rib part 8 to form support part joined bodies 9 the lower parts of the support parts of the support part joined bodies 9 adjacent to one another are connected with one another via a second connection rib part 10 formed along the thread parts 3 partitioned chambers 11 partitioned via the second connection rib part 10 are formed at respective net opening parts 5 of the base plate part 2 the height of the second connection rib part 10 is set to be lower than that of the support part 7 and communicating holes 12 through which the four partitioned chambers 11 adjacent to one another via the first connection rib part 8 communicate to one another, are formed each at the lower part of the first connection rib part 8.COPYRIGHT: (C)2009,JPO&INPIT【課題】受圧支柱部の高強度化を図るとともに、更に、芝などの地被植物が繁殖し易い地被植物保護板を提供する。【解決手段】保護板1は、格子状の基板部2に、多数個の支柱部7が基板部2の各筋部3に沿って規則的に並んで立設されている。基板部2の筋部3同士の各交差部4を中心に隣接する4個の支柱部7の上部が、第1連結リブ部8により互いに結合されることで、支柱部結合体9が形成されている。隣接する支柱部結合体9の下部同士は、筋部3に沿って形成された第2連結リブ部10により互いに結合されている。第2連結リブ部10により区画された区画室11が基板部2の網目開口部5毎に形成されている。第2連結リブ部10の高さは、支柱部7の高さよりも低く設定されている。第1連結リブ部8の下部に、該第1連結リブ部8を介して隣接する4個の区画室11を互いに連通する連通孔12が設けられている。【選択図】図3
