Oxygation of clayey soils by adding hydrogen peroxide to the irrigation solution: Lysimetric experiments
Oxygation of clayey soils by adding hydrogen peroxide to the irrigation solution: Lysimetric experiments
复制标题
DOI：
10.1016/j.rhisph.2016.08.002
复制
发表时间：
2016-12-01
期刊：
影响因子：
3.7
通讯作者：
Friedman, S. P.
中科院分区：
文献类型：
--
作者：
Ben-Noah, I.;Friedman, S. P.
排水不良的粘性土壤常以缺氧为特征。提出的改善土壤通气性的方法之一是使用过氧化氢。通过两个连续的蒸渗仪(桶)试验，研究了在灌溉水中添加过氧化氢对粘性土壤中氧气浓度和辣椒生长参数的影响。本研究研究了800ppm双氧水地面和地下灌溉和600ppm双氧水地下灌溉对粘性土壤中氧浓度和桶内辣椒产量的影响。主要结果是，使用800ppm的过氧化氢溶液有效地增加了土壤-空气中的氧气浓度，特别是通过地面滴头进行灌溉时。然而，添加过氧化氢并没有增加辣椒的产量或茎伸长的速度，这可能是因为一方面提高了氧气的利用率，另一方面由于氧化胁迫(和/或激素效应)造成的生理损害。用600ppm的H_2O_2溶液灌溉不影响土壤-空气中的氧浓度，但略有降低土壤体积含水率，延缓辣椒植株的开花。(C)2016爱思唯尔B.V.保留所有权利。
Poorly drained, clayey soils are frequently characterized with oxygen deficiency. One of the methods proposed for improving soil aeration is application of H2O2. The effects of adding hydrogen peroxide to irrigation water on the concentration of oxygen in a clayey soil and on pepper growth parameters were studied in two successive lysimeter (barrel) experiments. This study examined the effects of on-surface and subsurface irrigation with an 800-ppm hydrogen peroxide solution and subsurface irrigation with a 600-ppm hydrogen peroxide solution on oxygen concentrations in a clayey soil and the yield of pepper plants grown in barrels. The main findings were that the use of an 800-ppm H2O2 solution effectively increased the soil-air oxygen concentration, especially when irrigation was applied through on-surface drippers. However, the addition of H2O2 did not increase pepper yield or the rate of stem elongation, possibly due to a dual effect of improved oxygen availability, on the one hand, and physiological damage caused by an oxidative stress (and/or hormonal effect) on the other. Irrigation with a 600-ppm H2O2 solution did not affect the soil-air oxygen concentration; but did slightly decrease the soil volumetric water content and delay the flowering of the pepper plants. (C) 2016 Elsevier B.V. All rights reserved.