顺德生态乐园之土壤及其合理利用建议

广东省顺德生态乐园内的土壤形成发育受气候、生物、地形地貌、母质母岩和人为干扰等５大因素的影响，其中人为活动是导致土层结构破坏和水土流失的主要原因。酸度高、肥力低、土质较好是园内土壤的一个共同特征。在各类土壤中，坡地赤红壤的面积最大，超过７０％，但坡项土层瘠薄。水稻土有较长耕作历史，并已形成了潜育层和潴育层，但土壤肥力并不高。泥炭土有较高的有机质含量，但土壤过酸，速效养分含量过低，难以直接利用。因此

Basic Situations of Soils in Shunde Ecological Paradise of Guangdong and Some Advice for Utilizing Them Reasonably

All kinds of natural and human factors, including climate, organism, landform, mother rock and material, and human disturbance, influenced the genesis and development of soils in Shunde Ecological Paradise, Guangdong Province. Among them, the human activity destroyed the layers and structures of soil, and made soil erosion become severe. High acidity, low fertility and pretty good texture were the common feature of all soils in the Paradise. In all types of soil, lateritic red earth covered over 70% of the total area, ranking first. Lateritic red earth in the top of hills was infertile and thin, and accompanied with soil erosion; but it formed thick and fertile soil in the valley and foot of hills due to alluviation. The paddy soil probably had a long history of tillage, and furthermore it had formed gley horizon and illuvium, but its fertility was not high either.Peaty soil contained high content of organic matter, but it was too acidic and infertile with respect to available nutrients and therefore was hard to be directly utilized.So, it is essential to adopt measures of soil amelioration and to use them reasonably in order to fully play the ecological role of the soils in the paradise.