Improving water use efficiency and biomass in maize, foxtail millet, and bitter vetch by wick irrigation

IF 1 4区环境科学与生态学 Q4 WATER RESOURCES

Water SA Pub Date : 2022-07-27 DOI:10.17159/wsa/2022.v48.i3.3913

Hassan Heidari, Zhaleh Zarei, Kazhal Mohammadi

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引用次数: 1

Abstract

Water is one of the most important environmental factors in agriculture. Drought annually damages agricultural products. This loss can be reduced by some strategies. Pot and field experiments were conducted to assess the effect of wick irrigation on growth, yield and water use efficiency of maize, foxtail millet, and bitter vetch. Irrigation treatments included wick and surface irrigation (control) methods. Results of the pot experiment showed that wick irrigation had higher total fresh weight, total dry weight, and water use efficiency as compared to surface irrigation in both foxtail millet and bitter vetch. In foxtail millet, wick irrigation also had higher leaf to stem ratio, plant height, leaf relative water content and leaf area compared to surface irrigation. Results of the field experiment showed that wick irrigation increased specific leaf weight, water use efficiency, stem diameter, leaf fresh weight, total fresh weight, leaf dry weight, total dry weight, and leaf to stem ratio, but had similar fresh and dry stem weight and plant height compared to surface irrigation in maize. It is likely that the reduction in surface evaporation, reduced water consumption, and increased dry matter resulted in increased water use efficiency in wick irrigation. Overall, wick irrigation had higher water use efficiency, biomass, and plant growth compared to surface irrigation in maize, foxtail millet and bitter vetch.

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芯灌提高玉米、谷子和苦豌豆水分利用效率和生物量

水是农业中最重要的环境因素之一。干旱每年都会破坏农产品。这种损失可以通过一些策略来减少。通过盆栽和田间试验，研究了芯灌对玉米、谷子和苦豌豆生长、产量和水分利用效率的影响。灌溉处理包括灌芯法和地表灌(控制)法。盆栽试验结果表明，与地面灌溉相比，芯灌对谷子和苦豌豆的总鲜重、总干重和水分利用效率均有显著提高。谷子的茎叶比、株高、叶片相对含水量和叶面积均高于地表灌溉。田间试验结果表明，芯灌提高了玉米的比叶重、水分利用效率、茎粗、叶鲜重、总鲜重、叶干重、总干重和叶茎比，但鲜干重和株高与地面灌溉基本相同。表面蒸发的减少、耗水量的减少和干物质的增加很可能导致芯灌用水效率的提高。总体而言，玉米、谷子和苦豌豆的水分利用效率、生物量和植株生长均高于地表灌溉。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Water SA 环境科学-水资源

CiteScore

2.80

自引率

6.70%

发文量

审稿时长

18-36 weeks

期刊介绍： WaterSA publishes refereed, original work in all branches of water science, technology and engineering. This includes water resources development; the hydrological cycle; surface hydrology; geohydrology and hydrometeorology; limnology; salinisation; treatment and management of municipal and industrial water and wastewater; treatment and disposal of sewage sludge; environmental pollution control; water quality and treatment; aquaculture in terms of its impact on the water resource; agricultural water science; etc. Water SA is the WRC’s accredited scientific journal which contains original research articles and review articles on all aspects of water science, technology, engineering and policy. Water SA has been in publication since 1975 and includes articles from both local and international authors. The journal is issued quarterly (4 editions per year).