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应用生态学报 ›› 2019, Vol. 30 ›› Issue (10): 3426-3434.doi: 10.13287/j.1001-9332.201910.025

• 研究论文 • 上一篇    下一篇

全膜双垄沟播玉米耗水特性和籽粒产量对不同氮素形态配比的响应

崔政军1, 郭丽琢1, 高玉红1*, 李春春1, 彭之东1, 刘宏胜2, 牛俊义1   

  1. 1甘肃省干旱生境作物学重点实验室/甘肃农业大学农学院, 兰州 730070;
    2会宁县农业技术推广中心, 甘肃会宁 730799
  • 收稿日期:2018-11-09 出版日期:2019-10-20 发布日期:2019-10-20
  • 通讯作者: *E-mail: gaoyh@gsau.edu.cn
  • 作者简介:崔政军, 男, 1988年生, 博士研究生. 主要从事作物栽培与生理生态研究. E-mail: 987437555@qq.com
  • 基金资助:
    国家自然科学基金项目(31460331)、甘肃农业大学伏羲杰出人才项目(Gaufx-02J05)和甘肃省干旱生境作物学重点实验室开放基金项目(GSCS-2012-16)资助

Responses of water consumption characteristics and grain yield of maize to different nitrogen form ratios with full film mulching on double ridges and planting in furrows

CUI Zheng-jun1, GUO Li-zhuo1, GAO Yu-hong1*, LI Chun-chun1, PENG Zhi-dong1, LIU Hong-sheng2, NIU Jun-yi1   

  1. 1Gansu Provincial Key Laboratory of Arid Land Crop / College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China;
    2Huining Promotion Center of Agricultural Technology, Huining 730799, Gansu, China
  • Received:2018-11-09 Online:2019-10-20 Published:2019-10-20
  • Contact: *E-mail: gaoyh@gsau.edu.cn
  • Supported by:
    This work was supported by the National Natural Science Foundation of China (31460331), the Fuxi Elitist of Gansu Agricultural University (Gaufx-02J05) and the Open Found of Gansu Provincial Key Laboratory of Aridland Crop Science Project (GSCS-2012-16).

摘要: 为优化陇中干旱、半干旱地区全膜双垄沟播玉米的氮肥运筹,提高玉米籽粒产量,通过大田试验,研究了不同氮素形态配比(NO3--N/NH4+-N)[N1(1∶0)、N2(1∶1)、N3(1∶3)、N4(3∶1)]对旱地全膜双垄沟播玉米耗水特性、产量和水分利用效率的影响.结果表明: 不同氮素形态配比显著影响玉米0~200 cm土层的土壤贮水量,且N4处理土壤贮水量最低.N4处理农田总耗水量最高,较N1、N2、N3分别显著增加了2.9%、1.9%、0.9%(2015)和2.3%、1.4%、2.2%(2017).玉米籽粒产量和水分利用效率(WUE)在3个生长季均表现为N4处理最高,籽粒产量较其他处理分别高出3.3%~9.9%(2015)、3.5%~24.2%(2016)和8.3%~36.1%(2017),WUE则较其他处理分别高出1.6%~6.8%、4.9%~21.8%和6.6%~32.9%.N4处理下玉米的氮肥偏生产力显著高于其他处理,然后依次为N3、N2和N1.综合考虑,NO3--N/NH4+-N=3∶1是适宜陇中干旱、半干旱地区全膜双垄沟播玉米增产的氮肥运筹措施.

Abstract: To optimize the effects of nitrate (NO3--N) to ammonium (NH4+-N) ratios on water consumption characteristics, grain yield and water use efficiency (WUE) of maize under full film mulching on double ridges, a field experiment was conducted at semi-arid Loess Plateau of Gansu Province, China during 2015 to 2017 cropping seasons. The treatments with different ratios of NO3--N to NH4+-N included: N1 (1:0), N2 (1:1), N3 (1:3) and N4 (3:1). The results showed that different NO3--N/NH4+-N ratios had significant impacts on soil water storage in 0-200 cm soil layer. Treatment N3 had the lowest soil water storage. Treatment N4 significantly increased total water consumption by 2.9%, 1.9% and 0.9% in 2015, and 2.3%, 1.4%, and 2.2% in 2017, compared with N1, N2 and N3 treatments, respectively. Compared with the other treatments, treatment N4 increased grain yield by 3.3%-9.9%, 3.5%-24.2% and 8.3%-36.1% and improved WUE by 1.6%-6.8%, 4.9%-21.8%, and 6.6%-32.9% in 2015, 2016 and 2017, respectively. Treatment N4 had the highest partial productivity of nitrogen fertilizer, followed by N2, N3 and N1, respectively. We recommended treatment N4 as the best nitrate and ammonium ratio to improve water use efficiency, N partial productivity, and grain yield of maize in arid and semi-arid Loess Plateau.