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草业学报 ›› 2022, Vol. 31 ›› Issue (11): 158-171.DOI: 10.11686/cyxb2021350

• 研究论文 • 上一篇    下一篇

基于产量与品质的无芒雀麦灌溉制度研究

姜渊博(), 康燕霞, 齐广平(), 银敏华, 马彦麟, 汪精海, 贾琼, 康瑶, 张宏斌, 唐仲霞, 汪爱霞   

  1. 甘肃农业大学水利水电工程学院,甘肃 兰州 730070
  • 收稿日期:2021-09-22 修回日期:2021-11-03 出版日期:2022-11-20 发布日期:2022-10-01
  • 通讯作者: 齐广平
  • 作者简介:E-mail: qigp@gsau.edu.cn
    姜渊博(1996-),男,甘肃会宁人,在读硕士。E-mail: 1757731534@qq.com
  • 基金资助:
    国家重点研发计划(2016YFC0400306);甘肃省高校创新基金项目(2020B-131);甘肃省青年科技基金计划(20JR5RA011);甘肃省教育厅产业支撑计划项目(2021CYZC-20);甘肃农业大学水利水电工程学院青年教师科技创新基金项目(SLXY-QN-2020-06)

Irrigation scheduling based on yield and quality in Bromus inermis

Yuan-bo JIANG(), Yan-xia KANG, Guang-ping QI(), Min-hua YIN, Yan-lin MA, Jing-hai WANG, Qiong JIA, Yao KANG, Hong-bin ZHANG, Zhong-xia TANG, Ai-xia WANG   

  1. College of Water Resources and Hydropower Engineering,Gansu Agricultural University,Lanzhou 730070,China
  • Received:2021-09-22 Revised:2021-11-03 Online:2022-11-20 Published:2022-10-01
  • Contact: Guang-ping QI

摘要:

合理的水分调控模式有助于提升人工草地生产力、改善牧草品质和提高水资源利用效率。以无芒雀麦为试验材料,对比分析河西走廊地区两种水分调控模式[分生育期调亏灌溉(I1);全生育期调亏灌溉(I2)]下灌水量对其产量和品质的影响,综合考虑大田试验和典型枯水年灌溉制度模拟结果进行灌溉制度优选,为当地生产实践提供理论依据。结果表明:随着灌水量增加,I1模式下无芒雀麦产量呈先增加后减小趋势,I2模式下则逐渐增加,两种模式下无芒雀麦粗蛋白含量均逐渐减小,但酸性洗涤纤维和中性洗涤纤维含量均缓慢增加。与I2相比,I1模式下无芒雀麦产量平均提升23.11%,粗蛋白含量平均提升6.09%,因此,I1水分调控模式较优。由大田试验分析及典型枯水年灌溉制度模拟结果可知,I1DF1处理下[返青期(75%~85% θFC),拔节期(65%~85% θFC),抽穗期(65%~85% θFC)],灌水次数12次,灌溉定额521.76 mm的灌溉制度可为河西走廊地区无芒雀麦节水稳产提供参考。

关键词: 无芒雀麦, 产量, 品质, 水分调控, 灌溉制度

Abstract:

A suitably calculated irrigation regime can improve the productivity of artificial grassland, improve the quality of pasture and enhance water use efficiency in drier areas. In this research we compared the effects of two irrigation regimes (regulated deficit irrigation at different growth stages, I1; regulated deficit irrigation over the whole growth period, I2) on yield and quality of Bromus inermis in the Hexi Corridor. Irrigation scheduling was optimized by considering the results of field trials and simulations of irrigation scheduling in typical dry years to provide a theoretical basis for local production practices. The results showed that: The yield of B. inermis in I1 initially increased and then decreased with successive increases in the amount of water applied, while in I2B. inermis yield showed an increasing trend across the range of irrigation rates tested. In both irrigation regimes, the crude protein content of B. inermis gradually decreased with increasing water supply, while the acid detergent fiber and neutral detergent fiber contents increased somewhat. Compared with I2B. inermis yield was increased by 23.11% on average and crude protein content by 6.09% on average in I1; therefore, the I1 irrigation regime was superior. Based on the field trial combined with the simulation of irrigation scheduling in a typical dry year, it was found that a treatment designated [greening stage (75%-85% θFC), jointing stage (65%-85% θFC), and tasseling stage (65%-85% θFC) , I1DF1], irrigation frequency of 12 times, and a total irrigation amount of 521.76 mm provided water-saving benefits and stable yield in B. inermis in the Hexi Corridor.

Key words: Bromus inermis, yield, quality, water regulation, irrigation scheduling