草地学报

草地学报 ›› 2023, Vol. 31 ›› Issue (3): 813-818.DOI: 10.11733/j.issn.1007-0435.2023.03.022

• 研究论文 • 上一篇    下一篇

磷肥对甘肃临夏地区燕麦干草及种子生产的影响

耿小丽, 武慧娟, 付萍, 刘乾, 高占琪   

  1. 甘肃草原技术推广总站, 甘肃 兰州 730010
  • 收稿日期:2022-10-09 修回日期:2022-12-04 出版日期:2023-03-15 发布日期:2023-04-01
  • 作者简介:耿小丽(1979-),女,汉族,甘肃陇西人,高级畜牧师,博士,主要从事牧草遗传育种研究,E-mail:411147915@qq.com
  • 基金资助:
    甘肃燕麦种质资源评价及新品种选育（2019LCKJ45）；兰州旱作区人工牧场建植技术研究及示范（2018-RC-61）；甘肃省当家草品种示范推广（KJCX2021011）；禾本科牧草复合菌肥应用与推广技术（KJCX2021010）；甘肃省自然基金（NO.20JR5RA423）资助

Effect of Phosphate Fertilizer on Seed and Hay Yield of Avena sativa in Linxia of Gansu Province

GENG Xiao-li, WU Hui-juan, FU Ping, LIU Qian, GAO Zhan-qi   

  1. Grassland Technology Extension Station of Gansu Province, Lanzhou, Gansu Province 730010, China
  • Received:2022-10-09 Revised:2022-12-04 Online:2023-03-15 Published:2023-04-01

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摘要： 为确定甘肃高寒雨养区燕麦（Avena sativa）种子生产中磷肥最佳用量，提高肥料利用效率，试验在氮肥（尿素）用量75 kg·hm-2的固定水平下，设计4个磷肥（P2O5）水平（0（CK），65（C1），100（C2），135（C3） kg·hm-2），对各磷肥水平下干草产量、种子产量和相关性状的变化进行了研究。结果表明：施用磷肥使燕麦的株高、茎粗、分蘖和干草产量均有提高，灌浆期C1，C2，C3干草产量较CK依次提高13.85%，25.96%，22.65%，干草产量与磷肥水平显著正相关（相关系数0.91）；施用磷肥提高了燕麦的有效分蘖数、主穗长，显著提高主穗粒数、穗粒重、千粒重、种子产量和秸秆产量，C1，C2，C3种子产量较CK依次提高12.37%，16.72%，14.38%，种子产量与磷肥水平显著正相关（相关系数0.89）；P2O5100 kg·hm-2是临夏地区燕麦干草和种子生产比较合理的施磷量。

关键词: 甘肃临夏, 燕麦, 干草生产, 种子生产, 磷肥

Abstract: To determine the optimal amount of phosphate fertilizer for the seed production of Avena sativa in alpine rainfed area of Gansu Province and fertilizer use efficiency, four levels of phosphorus (P2O5) (0 for CK, 65 kg·hm-2for C1, 100 kg·hm-2for C2, 135 kg·hm-2for C3 kg·hm-2) were designed to study the changes of seed yield and related traits. The results were shown as followed. Compared with CK, plant height, stem diameter, tiller and hay yield of C1, C2 and C3were increased, and hay yield of C1, C2 and C3increased by 13.85%, 25.96% and 22.65% respectively. Hay yield and seed yield were significantly positively correlated with phosphate fertilizer, with correlation coefficient of 0.91 and 0.89 respectively. Phosphate fertilizer increased the values of tiller and spike length, and significantly improved effective tiller, spike grain weight, 1 000-grain weight, seed yield and straw yield. Seed yield of C1, C2 and C3 was 12.37%, 16.72% and 14.38% higher than that of CK, respectively. P2O5 100 kg·hm-2 is a suitable amount of phosphorus for oat hay and seed production in Linxia.

Key words: Linxia of Gansu province, Avena sativa, Seed yield, Hay yield, Phosphate fertilizer

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