林业及森工系统每年要花大量的时间搞幼林抚育(割草),所割杂草按照传统习惯都远离幼苗、幼树堆放,经风吹日晒而腐烂。这样的工作在幼林期要连续进行几年。但是,不少幼树因肥力不足,生长缓慢,有些速生丰产林、经济林在幼树期还要耗费大量的人力、财力追施化肥,以促进林木的生长。而所割杂草含有大量的肥分,由于远离幼苗、幼树堆放,难于被吸收利用。鉴于 Forestry and forestry systems spend a lot of time each year to nurture young trees (mowing). The cut weeds are far away from seedlings and saplings according to traditional customs. This work in the young forest to be carried out continuously for several years. However, many young trees due to lack of fertility, slow growth, some fast-growing high-yield forest, economic forest in sapling but also spend a lot of manpower, financial chasing fertilizers to promote the growth of trees. The cut weeds contain a lot of fertilizer, as far from the seedlings, young trees stacked, difficult to be absorbed. Given that