DRAINING, IRRIGATING AND DISPERSING MATERIAL

摘要

1. Material for draining or irrigating and lightening various soils formed by holow elements (1, 6, 8, 20) open at their ends, delimiting capillar or semi-capillar passages (5, 7, 9, 11, 27 or 29) said hollows elements being bulkly placed, characterized in that said hollow elements forms capillar or semi-capillar passages the dimensions of which are comprises between 2 and 20 millimeters and are dispersed directly into the soil for occupying irregular positions in the soil while delimiting therebetween spaces of various shapes and dimensions combining with their capillar or semi-capillar passages.