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草业学报 ›› 2018, Vol. 27 ›› Issue (7): 112-119.DOI: 10.11686/cyxb2017305

• 研究论文 • 上一篇    下一篇

种植密度和施磷肥对黄花草木樨种子产量的影响

骆凯, 张吉宇, 王彦荣*   

  1. 兰州大学草地农业生态系统国家重点实验室,兰州大学草地农业科技学院,甘肃 兰州 730020
  • 收稿日期:2017-07-12 修回日期:2017-09-28 出版日期:2018-07-20 发布日期:2018-07-20
  • 通讯作者: * E-mail: yrwang@lzu.edu.cn
  • 作者简介:骆凯(1990-),男,海南儋州人,在读博士。E-mail: luok08@lzu.edu.cn
  • 基金资助:
    公益性行业(农业)科研专项课题(20120304205),长江学者和创新团队发展计划(IRT13019)和国家“草地农业创新引智基地”(B12002)资助

Effect of planting density and phosphorus fertiliser on seed yield of Melilotus officinalis

LUO Kai, ZHANG Ji-yu, WANG Yan-rong*   

  1. State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, China
  • Received:2017-07-12 Revised:2017-09-28 Online:2018-07-20 Published:2018-07-20
  • Contact: * E-mail: yrwang@lzu.edu.cn

摘要: 适宜的种子生产技术是保证优良品种成功推广的重要基础。2014-2016年,在甘肃河西走廊地区研究了不同株距(30、45、60 cm)以及不同施磷肥量(0、40、80、120 kg·hm-2 P2O5)对黄花草木樨两个品种‘天水’和‘Norgold’种子产量及产量构成因素的影响。结果表明,密度和施肥量以及二者的互作极显著影响黄花草木樨的实际种子产量(P<0.01)。 ‘天水’在60 cm株距和80 kg·hm-2施磷肥条件下,两年的平均种子产量最高,为1234 kg·hm-2;而对于‘Norgold’,2015和2016年皆为45 cm株距、80 kg·hm-2施磷肥条件下的种子产量最高,分别为1613和1428 kg·hm-2。通径分析表明,对种子产量影响最大的种子产量构成因素为生殖枝数。

关键词: 黄花草木樨, 株距, 磷肥量, 种子产量, 通径分析

Abstract: Efficient seed production technology provides the main foundation for ensuring the successful extension of elite cultivars. Field trials were conducted on the Hexi Corridor, Gansu Province, from 2014 to 2016 to determine the effects of different within-row spacing (30, 45, 60 cm) and phosphorus fertiliser application rates (0, 40, 80 and 120 kg·ha-1 P2O5) on seed yield and yield components of two Melilotus officinalis cultivars, Tianshui and Norgold. Seed yield was affected significantly (P<0.01) by within-row spacing, fertilizer rate and their interactions. The 60 cm within-row spacing and fertilizer rate of 80 kg·ha-1 P2O5 produced the highest mean seed yield over 2 years in Tianshui; 1234 kg·ha-1. The highest seed yields in Norgold were produced by 80 P2O5 kg·ha-1 and 45 cm within-row spacing resulting in seed yields of 1613 and 1428 kg·ha-1 in 2015 and 2016, respectively. Path coefficient analysis indicated that, among the seed yield components, the number of fertile shoots had the greatest influence on seed yield.

Key words: Melilotus officinalis, within-row spacing, phosphorus fertilizer rates, seed yields, path coefficient analysis