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首页> 外文期刊>Journal of Natural Sciences Research >Characterization of Salinity and Sodicity Levels in Groundwater and Their Impact on the Yield of Banana (Musa Indicata) in District Lasbela
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Characterization of Salinity and Sodicity Levels in Groundwater and Their Impact on the Yield of Banana (Musa Indicata) in District Lasbela

机译：拉斯贝拉地区地下水盐度和碱度水平的表征及其对香蕉（Musa Indicata）产量的影响

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The study on characterization of different levels of salinity and sodicity was carried in district Lasbela during 2012-2013.The study area is situated between 24°-54 and 26°-37 north latitude and 64°-02 and 67°-28 east longitude. Lasbela’s geography and landscape is diverse and interesting. A total no 32 groundwater samples were collected from the study area. Water was characterized in accordance to the diagram for the classification of irrigation waters based on EC and SAR values. 94 % of the sites were falling in the high salinity class of C3 where as only 6% of the sites were falling in the C4 class. On the other hand, nearly 81% of the sites have SAR values below 10, which fall in the low category of sodicity S1. Hence only 19% of the sites have medium SAR. The percentage of the salts of the same site is higher when compared to its sodicity. The combined ECw-SAR classification of groundwater of 81% of the samples are in C3-S1 class followed by the respective classes of C4-S1 and C4-S2 at 13% and 6% of the groundwater analysed. Such water is classified as highly and very highly saline for irrigation. The average yield of banana in the whole area was 7447 kg/ha/year. ECw has no impact on yield of crops in the region. However a weak but general increase in salinity shows a bit increasing trend in yield while a minute increase in salinity shows a decreasing trend. Also SAR has no noimpact on yield of crops in the region. This might be because of use of such water that was entirely feasible particularly on light (sandy) soils. The present groundwater may be considerably better under many conditions that might be usable which be able to be successfully be applied to produce good yields of salt tolerant crops. Keywords: Lasbela, Groundwater Quality, Salinity, Sodicity, Yield, Banana, USDA
机译：在2012-2013年期间，对Lasbela地区进行了不同盐度和盐度表征的研究，研究区域位于北纬24°-54和26°-37之间，东经64°-02和67°-28之间。拉斯贝拉（Lasbela）的地理和景观十分多样且有趣。从研究区域总共没有收集到32个地下水样品。根据根据EC和SAR值对灌溉水进行分类的图表对水进行了表征。 94％的地点属于C3高盐度等级，而只有6％的地点属于C4高盐度等级。另一方面，将近81％的站点的SAR值低于10，属于S1级。因此，只有19％的站点具有中等SAR。与碱度相比，同一部位的盐百分比更高。 81％的样本的地下水ECw-SAR合并分类为C3-S1类，其次为C4-S1和C4-S2类别，分别为所分析的13％和6％。这类水被归类为灌溉用的高盐和极高盐。整个地区香蕉的平均产量为7447公斤/公顷/年。 ECw对该地区的农作物产量没有影响。然而，盐度微弱但普遍的增加表明产量略有增加的趋势，而盐度的微小增加则表明下降的趋势。 SAR对该地区的农作物产量也没有影响。这可能是因为使用这种水是完全可行的，尤其是在浅（沙质）土壤上。在许多可能可用的条件下，目前的地下水可能要好得多，这些条件可以成功地用于生产耐盐作物的高产。关键词：Lasbela，地下水水质，盐度，碱度，产量，香蕉，USDA

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