Application of magnetic field improves growth, yield and fruit quality of tomato irrigated alternatively by fresh and agricultural drainage water
Application of magnetic field improves growth, yield and fruit quality of tomato irrigated alternatively by fresh and agricultural drainage water
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DOI：
10.1016/j.ecoenv.2019.06.018
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发表时间：
2019-10-15
影响因子：
6.8
通讯作者：
Alshaal, Tarek
中科院分区：
文献类型：
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作者：
El-Zawily, Abd El-Shafik;Meleha, Mohamed;Alshaal, Tarek
虽然埃及的北三角洲地区是世界上人口最稠密的地区之一，但它严重缺乏灌溉作物所需的淡水。因此，农民通常采用低质量的水，如农业排水，这可能会对农作物的质量和人类健康构成威胁。在2014年和2015年连续两个夏季进行了两次田间试验，旨在提供更多关于在施加或不施加磁场的情况下使用淡水和农业排水替代灌溉番茄的利弊的信息。番茄在整个生长季节所需的12种地面灌溉，分别在新鲜水和农业排水之间交替施用，比例为（100 + 0）、（75 + 25）、（50 + 50）、（25 + 75）和（0 + 100）。使用铁填充物以150 kg/ha（-1）的速率施加磁场。结果表明，随着农田排水灌溉量的增加，各生育参数、早期产量、总产量、相对产量、商品产量、叶片叶绿素总量和氮磷钾含量逐渐降低。而100%淡水灌溉番茄的各项指标最高，100%农业排水灌溉番茄的各项指标最低。番茄果实中维生素C、可溶性固形物和硬度在100%农业排水灌溉时最高。施加磁场不仅能促进番茄在农业用水灌溉条件下的生长，而且能提高番茄的产量和品质。这些结果在使用农业排水灌溉作物是不可避免的，以提高产量和质量，从而确保食品安全的地区是重要的。
Although the North Delta region in Egypt is one of the most densely populated areas in the world, it suffers from a severe shortage of fresh water needed to irrigate crops. So usually farmers resort to the use of low-quality water, such as agricultural drainage water, which could pose a threat to the quality of crops and then human health. Two field experiments were carried out during two consecutive summer seasons of 2014 and 2015 aimed at delivering more information about the pros and cons of alternative irrigation for tomato using fresh and agricultural drainage water with or without applying of magnetic field. The twelve surface irrigations, which tomato needs during its whole growing season, were applied alternatively between fresh and agricultural drainage water, respectively, at the following percentages (100 + 0), (75 + 25), (50 + 50), (25 + 75) and (0 + 100). Magnetic field was applied using iron fillings at a rate of 150 kg ha(-1). The results revealed that growth parameters, early, total and relative yield, marketable yield and total chlorophyll and NPK content of leaves were gradually decreased with increasing the irrigation using agricultural drainage water. However, irrigating tomato by 100% fresh water had the highest values, while using of 100% agricultural drainage water displayed the lowest values. Contrarily, vitamin C, total soluble solids (TSS) and fruit firmness where at their highest values when tomato irrigated by 100% of agricultural drainage water. Applying of magnetic field not only enhances the growth, yield and quality of tomato under irrigation using agricultural water but also under fresh water. These results are of importance in areas where the use of agricultural drainage water irrigating crops is inevitable for enhancing yield and its quality and consequently ensuring food safety.