...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Agricultural Water Management >Alternate furrow irrigation can maintain grain yield and nutrient content, and increase crop water productivity in dry season maize in sub-tropical climate of South Asia
【24h】

Alternate furrow irrigation can maintain grain yield and nutrient content, and increase crop water productivity in dry season maize in sub-tropical climate of South Asia

机译：交替的沟灌溉可以保持粮食产量和营养含量，并提高南亚亚热带气候中的干季玉米作物水生产率

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Water scarcity is becoming a major constraint for maize cultivation and increasing maize yield globally. Water-saving irrigation methods are required to increase crop water productivity (CWP) without reducing grain yield and nutrient uptake. We evaluated the effects of different methods and levels of irrigation on crop dry matter, grain yield, nutrient uptake and CWP of maize (cv. 'BARI Hybrid Bhutta-9') in field condition in a sub-tropical environment in Bangladesh. The experiment was laid out in a nested plot design with three replications during 2014-15 and 2015-16. The treatments were three irrigation levels (I-1: 100 % field capacity, FC; I-2: 80 % FC; I-3: 60 % FC) and three irrigation methods (AFI: alternate furrow irrigation; SFFI: skip-fixed furrow irrigation; and TFI: traditional furrow irrigation). Results indicate that both the irrigation method and level had significant effects on dry matter, grain yield, nutrient uptake, and CWP. The AFI technique maintained similar grain yield (8.1 t ha(-1)) to TFI but reduced irrigation water by 37 % for irrigation applied at 100 % of FC. Both AFI and TFI had significantly higher (p <= 0.05) grain yield compared to SFFI at the irrigation level of I-2. The interactive effect of irrigation level and method also had a significant effect (p <= 0.05) on maize yield. The uptakes of macronutrients (N, P, K, S, Ca, and Mg) and micronutrients (B, Zn, Fe, and Mn) by maize grain were not significantly different between AFI and TFI under I-1. Irrigation level was the main driver for determining the patterns in grain yield but irrigation method controlled the patterns in CWP. The AFI technique resulted in higher CWP compared to TFI or SFFI. Results demonstrate that AFI is an effective water-saving technique, which can increase the CWP without a significant reduction in grain yield and nutrients uptake by maize grain. The AFI method in conjunction with a reduced amount of irrigation water can be adapted in the sub-tropical climates of South Asia where maize production in the dry season is heavily dependent on repeated irrigation with limited water supplies.
机译：水资源稀缺性正在成为玉米培养和全球玉米产量增加的主要限制。需要节水灌溉方法来增加作物水生产率（CWP）而不降低籽粒产量和营养吸收。我们评估了不同方法和灌溉水平对孟加拉国亚热带环境中玉米（CV.Bari Hybrid Bhutta-9'）的作物干物质，籽粒产量，营养吸收和CWP的影响。在2014-15和2015-16期间，在嵌套的情节设计中铺设了实验。该治疗是三种灌溉水平（I-1：100％现场容量，Fc; I-2：80％Fc; I-3：60％FC）和三种灌溉方法（AFI：交替沟灌; SFFI：跳过固定沟灌溉;和TFI：传统沟灌）。结果表明，灌溉方法和水平都对干物质，籽粒产量，营养吸收和CWP具有显着影响。 AFI技术将相似的谷物产量（8.1 t ha（-1））保持为TFI，但在100％的Fc施加灌溉时将灌溉水减少37％。与I-2灌溉水平相比，AFI和TFI均显着更高（P <= 0.05）颗粒产量。灌溉水平和方法的互动效果也具有显着影响（P <= 0.05）玉米产量。在I-1下AFI和TFI之间的Macronuriver（N，P，K，S，Ca和Mg）和微量营养素（B，Zn，Fe和Mn）的上升在I-1下没有显着差异。灌溉水平是用于确定籽粒产量的模式但灌溉方法控制CWP的图案的主要驱动力。与TFI或SFFI相比，AFI技术导致高CWP。结果表明，AFI是一种有效的节水技术，可以增加CWP，没有大规模降低粮食产量和玉米籽粒的营养素。 AFI方法结合减少的灌溉水量可以调整南亚的亚热带气候，干燥季节的玉米产量严重依赖于水供应有限的反复灌溉。

著录项

相似文献

  • 外文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号