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Salt Distribution and Potato Response to Irrigation Regimes under Varying Mulching Materials.
Plants ( IF 4.658 ) Pub Date : 2020-05-31 , DOI: 10.3390/plants9060701
Mohamed Hassan Abd El-Wahed 1 , Abdulrasoul Mosa Al-Omran 2 , Mahmoud Mohamed Hegazi 3 , Mahmoud Mohamed Ali 4 , Yahia Abdelaty Mohamed Ibrahim 4 , Ayman El Sabagh 5, 6
Affiliation  

Water scarcity and frequent drought spells are becoming critical challenges to sustainable agricultural development, especially in arid and semiarid regions. Thus, this work aims to investigate the effect of deficit irrigation and varying mulching materials on soil moisture content, salt distribution, and potato yield. The experiment consisted of three irrigation regimes (I100%, I80%, and I60%) of crop evapotranspiration (ETc), designated as I100%, I80%, and I60% of ETc, and five mulching treatments viz. (i) without mulch (WM), (ii) poultry manure mulch (PMM), (iii) rice straw mulch (RSM), (iv) white plastic mulch (WPM), and (v) black plastic mulch (BPM), which were continued for two consecutive growing seasons. The results showed that soil salinity was affected by mulching and irrigation levels as the salt content increased from the initial soil salinity. Moreover, I60% recorded the highest salt accumulation in the soil profile for WM treatment compared to the rest of the irrigation and mulching treatments. It was also revealed that PMM remained unmatched by significantly producing the highest potato yield compared to other mulching materials. However, the average potato yield decreased by 13.83% and 29.16% in the 2016 season for I80% and I60% and by 12.95% and 30.91% in the 2017 season, respectively, in comparison to full irrigation (I100%). So, when sufficient irrigation water is available, full irrigation (I100%) and PMM treatment are recommended to achieve the maximum potato tuber yield, which has a minimum impact on increasing salinity. However, when the discharge is insufficient, deficit irrigation (I80%) and PMM treatment are recommended to conserve 20% of the irrigation water applied with a minimum reduction in tuber yield and a slight increase in soil salinity.

中文翻译:

不同覆盖材料下的盐分分布和马铃薯对灌溉制度的响应。

缺水和频繁的干旱正在成为可持续农业发展的关键挑战,特别是在干旱和半干旱地区。因此,这项工作旨在调查亏缺灌溉和不同覆盖材料对土壤水分,盐分分布和马铃薯产量的影响。该实验由三种灌溉制度(分别为I 100%,I 80%和I 60%)的作物蒸散量(ETc)组成,分别为I 100%,I 80%和I 60%ETc和五种覆盖处理。(i)不覆盖(WM),(ii)家禽粪便覆盖(PMM),(iii)稻草覆盖(RSM),(iv)白色塑料覆盖(WPM)和(v)黑色塑料覆盖(BPM),连续两个生长季节持续进行。结果表明,随着盐分从初始土壤盐分增加,土壤盐分受到覆盖和灌溉水平的影响。此外,与其余的灌溉和覆盖处理相比,有60%的人记录了WM处理土壤中盐分的最高积累。还揭示出,与其他覆盖材料相比,PMM仍然无法与之媲美,可显着提高马铃薯的最高产量。但是,在2016年度,我的平均马铃薯产量分别下降了13.83%和29.16%,其中80%与完全灌溉(I100%)相比,2017年季节分别为60%和12.95%和30.91%。因此,当有足够的灌溉水时,建议进行全面灌溉(100%灌溉)和PMM处理,以使马铃薯块茎产量最大化,这对增加盐度影响最小。但是,当排放量不足时,建议使用亏水灌溉(I 80%)和PMM处理以节省20%的灌溉水,同时减少块茎产量并最小程度提高土壤盐分。
更新日期:2020-05-31
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