浙江农业学报 ›› 2025, Vol. 37 ›› Issue (9): 1849-1859.DOI: 10.3969/j.issn.1004-1524.20250037

• 作物科学 • 上一篇    下一篇

水肥耦合对景电灌区膜下滴灌玉米产量及水肥利用效率的影响

闫沛中1(), 陈亮2,3, 张生银4, 刘斌1,3,*()   

  1. 1 甘肃省景泰川电力提灌水资源利用中心, 甘肃 景泰 730400
    2 甘肃省农业工程技术研究院, 甘肃 武威 733006
    3 甘肃农业大学 园艺学院, 甘肃 兰州 730070
    4 中国科学院 西北生态环境资源研究院, 甘肃 兰州 730099
  • 收稿日期:2025-01-10 出版日期:2025-09-25 发布日期:2025-10-15
  • 作者简介:刘斌,E-mail:347582892@qq.com
    闫沛中(1968—),男,甘肃景泰人,学士,高级工程师,主要从事农业灌区建设管理与灌溉技术研究工作。E-mail:463621361@qq.com
  • 通讯作者: 刘斌
  • 基金资助:
    甘肃省青年科技基金项目(23JRRD0001);甘肃省水利科学试验研究及技术推广计划项目(22GSLK023)

Effects of water-fertilizer coupling regimes on maize yield and water and fertilizer use efficiency under mulched drip irrigation in Jingdian irrigation district of China

YAN Peizhong1(), CHEN Liang2,3, ZHANG Shengyin4, LIU Bin1,3,*()   

  1. 1 Gansu Jingtaichuan Irrigation Water Resources Utilization Center, Jingtai 730400, Gansu, China
    2 Gansu Academy of Agri-Engineering Technology, Wuwei 733006, Gansu, China
    3 College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
    4 Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou 730099, China
  • Received:2025-01-10 Online:2025-09-25 Published:2025-10-15
  • Contact: LIU Bin

摘要: 发展现代农业节水技术是解决西北干旱地区水资源短缺和提高水资源效率的有效途径。为研究膜下滴灌水肥耦合对景电灌区玉米生长及产量的影响,寻找适宜的水肥运筹方案,特以当地滴灌灌溉量和推荐施肥量为对照(CK),设置3种土壤水基质势[-10 kPa(W1)、-20 kPa(W2)、-30 kPa(W3)]和3种施肥量[推荐施肥量的85%(F1)、75%(F2)、65%(F3)],开展田间小区试验。结果表明,W2F2处理的综合表现最好。该处理下,玉米孕穗期、灌浆期的地上部干物质质量分别较CK显著(p<0.05)提高了13.7%、9.0%,产量为18.23 t·hm-2,经济收益达42 548元·hm-2,较CK提高4.9%,水分利用效率、肥料偏生产力分别较CK显著提高12.5%、36.3%,对土壤含盐量无显著影响,可较CK节水24.7%、节肥25.0%。其具体水肥运筹为:全生育期灌水8次,灌溉定额2 880 m3·hm-2,施肥总量为N 157.5 kg·hm-2、P2O5 82.5 kg·hm-2、K2O 82.5 kg·hm-2,苗期、拔节期、孕穗期、灌浆期的施用量分别为20%、30%、30%、20%。

关键词: 膜下滴灌, 水肥耦合, 玉米, 水分利用效率, 肥料偏生产力

Abstract:

The development of modern agricultural water-saving technology is an effective way to solve the water shortage and improve the efficiency of water resources in the arid regions of northwest China. In order to study the effect of water-fertilizer coupling of drip irrigation under sub-membrane drip irrigation on the growth and yield of maize in Jingdian irrigation area and to find out a suitable regime, a plot experiment was conducted. The local drip irrigation amount and fertilizer application rate were used as control (CK), and 3 soil water matric potentials [-10 kPa (W1), -20 kPa (W2), -30 kPa (W3)] and 3 fertilizer applicatin rates [85% (F1), 75% (F2) and 65% (F3) of the control] were set. It was shown that W2F2 treatment exhibited the best performance under the experiment conditions. Under this treatment, the weight of aboveground dry matter of maize was significantly (p<0.05) increased by 13.7%, 9.0% than that of CK at the booting, filling period, respectively, the yield was 18.23 t·hm-2, and the economic income was 42 548 yuan·hm-2, which was 4.9% higher than that of CK. Besides, the water use efficiency and partial factor productivity of fertilizers under W2F2 treatment were increased by 12.5% and 36.3%, respectively, as compared with the CK, and W2F2 treatment had no significant adverse effect on soil salt content. Compared with the CK, W2F2 treatment could save water and fertilizer usage by 24.7% and 25.0%, respectively. Specifically, the water-fertilizer coupling regime of W2F2 treatment was as follows: 8 times of irrigation during the whole growth period, irrigation quota of 2 880 m3·hm-2, and input of N 157.5 kg·hm-2, P2O5 82.5 kg·hm-2 and K2O 82.5 kg·hm-2 with a ratio of 20%, 30%, 30%, 20% at seedling, jointing, booting and filling period, respectively.

Key words: mulched drip irrigation, water-fertilizer coupling, maize, water use efficiency, partial factor productivity of fertilizer

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