Hussein M M, Abou-Baker N H
Water Relations and Field Irrigation Department, National Research Centre, Dokki, Giza, Egypt.
Soils and Water Use Dept., Agric. Div., National Research Centre, Dokki, Giza, Egypt.
R Soc Open Sci. 2018 Aug 8;5(8):171809. doi: 10.1098/rsos.171809. eCollection 2018 Aug.
To investigate the effect of nano-zinc fertilizer on growth, yield and mineral status of cotton plants grown under salt stress, a pot experiment was set up in the greenhouse of the National Research Centre. The treatments were as follows: (I) diluted seawater: 10% (S1), 20% (S2) and tap water as a control (S0), (II) 100 ppm (NZn1), 200 ppm (NZn2) nano-zinc and distilled water as a control (NZn0). Irrigation with 10 and 20% seawater decreased dry weight (DW) of leaves by 11.53 and 43.22%, while decreases in bolls were 15.50 and 71.65%, respectively. Except for root DW and top/root ratio, the measured growth parameters were increased as nano-zinc concentration increased. As for the interaction between treatments, the highest DW of stem, leaves and bolls resulted from the addition of NZn2 under normal condition, followed by NZn2 x S1 and the next was NZn2 x S2. The foliar application of 200 ppm nano-Zn led to mitigating the adverse effect of salinity and confirmed that diluted seawater could be used in the irrigation of cotton plant. However, phosphorus fertilizer should be added with nano-Zn application to avoid P/Zn imbalance. Some elements' status and their ratios were recorded.
为研究纳米锌肥对盐胁迫下棉花植株生长、产量及矿质营养状况的影响，在国家研究中心的温室中进行了盆栽试验。处理如下：（I）稀释海水：10%（S1）、20%（S2），以自来水作对照（S0）；（II）100 ppm（NZn1）、200 ppm（NZn2）纳米锌，以蒸馏水作对照（NZn0）。用10%和20%海水灌溉使叶片干重分别降低了11.53%和43.22%，棉铃减少量分别为15.50%和71.65%。除根干重和顶根比外，所测生长参数随纳米锌浓度增加而升高。关于处理间的交互作用，正常条件下添加NZn2时茎、叶和棉铃的干重最高，其次是NZn2×S1，然后是NZn2×S2。叶面喷施200 ppm纳米锌可减轻盐害，证实稀释海水可用于棉花灌溉。然而，施用纳米锌时应添加磷肥以避免磷锌失衡。记录了一些元素的状况及其比例。
