| 摘要 |
PCT No. PCT/BE88/00006 Sec. 371 Date Oct. 31, 1988 Sec. 102(e) Date Oct. 31, 1988 PCT Filed Mar. 2, 1988 PCT Pub. No. WO88/06401 PCT Pub. Date Sep. 7, 1988.A trough for irrigation and moistening of the water-permeable side walls (3) and a waterproofed bottom (9) is described. It also comprises a welded or adhesively bonded, waterproofed lid (6), provided with a feed coupling (8) and a discharge coupling (10). When placed in series, a number of troughs of this type are suitable for moistening dry earth. |
