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首页> 外文期刊>American journal of applied sciences >The Fertility Status of Soils at Rehabilitated Degraded Land in Universiti Putra Malaysia Planted with Pinus caribaea and Swietenia macrophylla | Science Publications
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The Fertility Status of Soils at Rehabilitated Degraded Land in Universiti Putra Malaysia Planted with Pinus caribaea and Swietenia macrophylla | Science Publications

机译：马来西亚布特拉大学（Putra Caribaea and Swietenia macrophylla）恢复退化土地上土壤的肥力状况科学出版物

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> >Soil fertility (both physicaland chemical) is one of the important factors limiting plant growth. So, thefertility of the soils should be determined before growing crops and after theestablishment of forest rehabilitation. A study was conducted to determine thefertility status of soils at rehabilitated degraded land in Universiti PutraMalaysia. The main objective was to compare the fertility of soils plantedforest and pasture. Three sites studied were pines plantation (Pinus caribaea),mahogany plantation (Swietenia macrophylla) and pasture area. At eachsite, three squares of 20×20 m were selected and two depths of soil sample werecollected, topsoil (0-20 cm) and subsoil (20-40 cm), from six points within thesquares. The physical properties of the soils analyzed were bulk density, soiltexture and moisture content, while the chemical properties were pH, total Cand N, cation exchangeable capacity and exchangeable cations (Al, Ca, Mg, K andNa). The mean annual increment of height, diameter and volume of planted forestwere also taken. The increment of height, diameter at breast height and volumeof P. caribaea and S. macrophylla did not show any comparativedifference for the cause of the similarity in the increment of patternscatalysed at the same location and climatic condition. P. caribaeashowed higher SFI value compared to the other study plots, especially for thetopsoil. In contrast, pasture plot had higher SEF, followed by P. caribaeaand S. macrophylla plantation plots. P. caribaea showed thehighest SFI value, while pasture plot had highest SEF, followed by P. caribaeaand S. macrophylla plantation plots. Further study on bigger forestplantation having different types of plant species and land topography needs tobe conducted to allow individuals and bodies in the field of forest plantationto gain the opportunity and implement the right approaches to establish forestplantation with good planting establishment practices.
机译： > >土壤肥力（物理和化学方面）是限制植物生长的重要因素之一。因此，应在种植农作物之前和恢复森林后确定土壤的肥力。进行了一项研究以确定马来西亚布特拉大学已修复退化土地的土壤肥力状况。主要目的是比较人工林和牧场土壤的肥力。研究的三个地点是松树种植园（加勒比松），红木种植园（）和牧场。在每个地点，选择三个20×20 m的正方形，并从正方形内的六个点收集两个深度的土壤样品，表土（0-20厘米）和地下土壤（20-40厘米）。分析的土壤的物理性质为堆积密度，土壤质地和水分含量，而化学性质为pH，总Cand N，阳离子可交换容量和可交换阳离子（Al，Ca，Mg，K和Na）。还记录了人工林的高度，直径和体积的年均增量。身高，乳房高度处的直径和P的增量。加勒比和 S。在相同的位置和气候条件下，模式增长的相似性的原因，大叶菊没有表现出任何比较差异。 P与其他研究地块相比，加勒比海显示出更高的SFI值，尤其是对于表土而言。相反，牧场的SEF较高，其次为 P。加勒比和 S。大型人工林地块。 P加勒比显示出最高的SFI值，而牧场则具有最高的SEF，其次是 P。加勒比和 S。大型人工林地块。需要对具有不同植物种类和土地地形的更大的人工林进行进一步的研究，以使人工林领域的个人和机构获得机会并实施正确的方法，以建立良好的人工林建立林木。

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