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五、摘要按照历史的順序,評述了包括净除杂草和利用“天然”再生植物在内的各种复盖政策。简略地报导了最近田間試驗的結果。認为多种豆科植物混合复盖最适于内陆更新胶区或曾經剧烈烧(山巴)的新垦胶区之用;在这种新垦区,要土壤尽量少受破坏和建立天然再生复盖,已不可能了。粗恶禾本草类和某些外来的闊叶草本植物都是害草,在胶园未郁蔽的时期为害尤其严重。当豆科复盖因胶树树冠蔭蔽而枯萎时,应让柔軟禾本草和天然的复盖植物生长接替。推荐了各种豆科植物:(1) 植胶带边緣植物,(2) 匍匐植物和 (3) 扎根深、产死复盖材料多的灌木等。这些植物种有些成长迅速,有些能持久生存。至今,还没有发現适于作单一复盖的理想植物;即使有,其成效也不可能持久,因为它在被广泛采用时,可能就会受到害虫的侵害。
V. Summary In accordance with the historical order, commented on a variety of cover policies including net weeds and the use of “natural” regenerated plants. Briefly reported the results of the recent field trials. It is considered that a variety of leguminous hybrid coverings are best suited for use in inland renewal gum fields or in newly reclaimed rubber fields that used to be fiercely burnt (shabar); in this new reclamation area, soil is minimally damaged and natural regeneration established Cover, it is impossible. Rough grasses and some exotic broadleaf herbs are grasses that are especially damaging during periods of unspoiled rubbery lands. When the leguminosae cover due to plastic canopy shade and withered, should let the soft grass and natural cover plant growth successor. Recommended a variety of legumes: (1) tape edge plant, (2) creeping plants and (3) deep rooting, dead and more cover material shrubs. Some of these plant species grow rapidly, and some survive long-term. To date, no ideal plant suitable for single covering has been found; its effectiveness, if any, can not be sustained since it may be subject to pests when widely adopted.