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首页> 外文期刊>Agronomia Costarricense >Physical properties in the middle watershed of the river Reventado, Cartago, Costa Rica.
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Physical properties in the middle watershed of the river Reventado, Cartago, Costa Rica.

机译：哥斯达黎加卡塔戈雷万塔多河中间流域的物理性质。

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Land capability of the area of study was determined and a proposal for appropriate use was made using the Land Capability Methodology proposed by the Ministry of Agriculture and Livestock of Costa Rica. The soils of the farms sampled were being cultivated for vegetables (66.5%), pastures (22.9%), and in a lower scale by forests, fallow and flowers. The land capability consisted of 10.5% Class II, 38.1% Class III, 21.9% Class IV, 1.8% Class V, 8.9% Class VI, 17.8% Class VII and 1% Class VIII. Some 60% of the farms were in Classes III and IV, where the limitations were slope, erosion, effective depth and soil fertility. Some 25% of the farming areas showed appropriate use, 25% were slightly over-utilized and 36% were severely over-utilized. It is proposed that the conflict can be corrected by intensive management practices and soil conservation and in areas of greater slope by a change in use to high altitude fruit trees. In the lots of Class VII with grass cover, planting of the forests is recommended. For the study area, the land use potential was truck crops 57%, pastures 20%, perennial crops or fruit trees 13%, and 10% for reforestation. Water erosion in the agricultural activities in the middle watershed does not limit the productivity of the zone: some 90% of the lots showed light to moderate erosion with slopes less than 30%. Other factors that affect the soil and water deterioration were open mine extraction, natural landslides and the lack of control structures for flow and sediments in the earth roadways.
机译：确定了研究区域的土地利用能力，并使用哥斯达黎加农业和畜牧部提出的土地利用能力方法提出了适当使用的建议。所采样农场的土壤正在种植蔬菜（66.5％），牧场（22.9％），而森林，休耕地和花卉的种植规模较小。着陆能力包括II类的10.5％，III类的38.1％，IV类的21.9％，V类的1.8％，VI类的8.9％，VII类的17.8％和VIII类的1％。大约60％的农场属于III级和IV级，其局限性是坡度，侵蚀，有效深度和土壤肥力。大约25％的耕地得到了合理利用，其中25％的土地被过度利用，而36％的土地被严重过度利用。建议通过强化管理措施和水土保持，以及在坡度较大的地区通过改用高海拔果树来纠正冲突。在许多种草的VII类植物中，建议植树造林。对于研究区域，土地利用潜力为：卡车农作物占57％，牧场占20％，多年生作物或果树占13％，重新造林占10％。中部流域农业活动中的水蚀不限制该地区的生产力：大约90％的批次显示轻度至中度侵蚀，坡度小于30％。影响土壤和水质恶化的其他因素包括露天开采，自然滑坡以及土巷中流动和沉积物缺乏控制结构。

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