香根草的栽培管理方法研究

Study on method of cultivation and maintenance to vetiver grass

香根草作为水土保持与环境治理植物目前在热带、亚热带地区得到越来越广泛的应用。然而,香根草不结实,只能通过无性繁殖,繁殖速度相对较慢。因此,如何加快香根草的繁殖速度便成了研究该植物的一个重要课题。目前各地所采取的繁殖栽培与管理方法各不相同。通过现场观测,并总结过去的繁苗经验,提出了8项应采取的栽培管理措施:1)苗圃应选在阳光充足、无遮荫的地段;2)苗圃地应土壤肥沃,宜沙不宜粘,不要有积水;3)注意施肥,磷肥与有机肥作基肥,复合肥作追肥;4)种植前将香根草地上部分剪至30～40cm,根系剪至5～15cm;5)考虑斜植,且种植深度要恰当;6)种植密度要合理;7)适度剪割,清除杂草;8)1年出苗。

Vetiver grass (Vetiveria zizanioides ) is being widely used in the tropical and subtropical regions for the purpose of soil and water conservation and environment amelioration However, vetiver does not produce seeds in normal condition and therefore, produces new plants mainly through vegetative propagation; as a result, its multiplication speed is relatively slow So it is a very important research topic how to accelerate the multiplication speed of vetiver Through an investigation to plot experiment and a summary to past experiences of vetiver multiplication, eight aspects that should be noticeable with special referenence to vetiver cultivation and maintenance are put forth in this paper They are: 1) the nursery should be located in the fully shining, nonshading section; 2) soil ought to be fertile, sandy and not to be waterlogged; 3) fertilization should be considered, especially in the soil short of P element; 4) prior to planting vetiver, the shoots of seedlings had better be cut to 30～40 cm, and their roots be cut to less 15 cm; 5) it is possibly better to plant vetiver obliquely with an angle of 45～60° and to plant it's crown 2～4 cm deep; 6) rational planting density, generally 20 cm × 30～40 cm, is also one aspect to promote tillering; 7) clean out weeds and do not give too frequent cutting, 1～2 times each year is enough;8) the period of cultivation should not be too long or too short, 1 year is usually best