| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a new undertaking method incorporated with a new cutting method by re-evaluating the unchanged undertaking method of forestry. <P>SOLUTION: The thinning method by a heating, pressurizing, and instantly pressure-reducing crushing device is developed to remake a forestry land to the healthy one while avoiding waste by carrying out the strong thinning by introducing the device, although branch-cutting, cross cutting and accumulation are normally carried out at the thinning or after tree-cutting at the forestry land. <P>COPYRIGHT: (C)2007,JPO&INPIT |
