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首页> 外文期刊>Journal of Natural Sciences Research >Seasonal Variations in Soil Conditions, Its Classification and Mapping of Dry Sub Tropical Region of Uthal, District Lasbela
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Seasonal Variations in Soil Conditions, Its Classification and Mapping of Dry Sub Tropical Region of Uthal, District Lasbela

机译：拉斯贝拉地区乌塔尔热带亚热带干旱地区土壤条件的季节性变化，分类与制图

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摘要

The study on soil classification and seasonal variation was carried out during 2011-12 in Tehsil Uthal, District Lasbella (Balochistan). The water and soil samples were collected and subjected to determine for various physico-chemical properties and accordingly the results were formulated and compared with standard values. In winter soil EC in Zone 1, Zone 2, Zone 3 and Zone 4 area was 2.218, 1.99, 2.43 and 1.22 dS m-1,pH value 8.1, 8.3, 8.3 and 7.8, HCO3- 2.0125, 1.725, 1.675 and 2.5875 meq L-1, Na2+ 13, 12, 11.4125 and 14meq L-1 ,Ca2+ 7, 6, 6 and 7meq L-1 while the TDS in soil samples were 1571, 1638, 1902 and 837, respectively. In summer soil EC in Zone 1, Zone 2, Zone 3 and Zone 4area zones was 2.27, 2.04, 2.66 and 1.29 dS cm-1, pH value 8.7, 8.4, 8.4 and 8.0, HCO3-1.7375, 1.675, 1.5375 and 1.85meq L-1, Na2+ 13, 13, 12 and 16meq L-1,Ca2+6, 6, 6 and 7meq L-1 while the TDS in soil samples were 1605, 1713, 1001 and 952, respectively. Average value of ECe of 2.04 dSm-1. The ECe values ranged 1.08 to 3 dSm-1. The average values of ECe at the given depth verify that marginal salinity was present in the soil. This may be due to the leaching of salts to the deeper layers. The average value of SAR is 9.18. The SAR ranged from 6.8 to 12.2. The ratios are less than 13 which show that concentration of Na+ ions to that of Ca+2 and Mg+2 is low. The average value of SAR is 9.18. The SAR ranged from 6.8 to 12.2. The ratios are less than 13 which show that concentration of Na+ ions to that of Ca+2 and Mg+2 is low. This shows improvement in soil. Keywords: Soil, Electrical Conductivity, SAR, Summer, Winter, Zones, Mapping
机译：土壤分类和季节变化的研究于2011-12年在Lasbella区（District路支斯坦）的Tehsil Uthal进行。收集水和土壤样品并进行各种理化性质的测定，并据此制定结果并将其与标准值进行比较。在1区，2区，3区和4区的冬季土壤EC为2.218、1.99、2.43和1.22 dS m-1，pH值8.1、8.3、8.3和7.8，HCO3-2.0125、1.725、1.675和2.5875 meq L-1，Na2 + 13、12、11.4125和14meq L-1，Ca2 + 7、6、6和7meq L-1，而土壤样品中的TDS分别为1571、1638、1902和837。在1区，2区，3区和4区区域的夏季土壤EC为2.27、2.04、2.66和1.29 dS cm-1，pH值8.7、8.4、8.4和8.0，HCO3-1.7375、1.675、1.5375和1.85meq L-1，Na2 + 13、13、12和16meq L-1，Ca2 + 6、6、6和7meq L-1，而土壤样品中的TDS分别为1605、1713、1001和952。 ECe的平均值为2.04 dSm-1。 ECe值范围为1.08至3 dSm-1。给定深度的ECe平均值证明土壤中存在边缘盐度。这可能是由于盐浸出至更深的层。 SAR的平均值为9.18。 SAR在6.8到12.2之间。该比率小于13，表明Na +离子的浓度相对于Ca + 2和Mg + 2的浓度低。 SAR的平均值为9.18。 SAR在6.8到12.2之间。该比率小于13，表明Na +离子的浓度相对于Ca + 2和Mg + 2的浓度低。这表明土壤有所改善。关键字：土壤，电导率，SAR，夏季，冬季，区域，制图

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