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、60cm)以及不同施磷肥量(0、40、80、120kg·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60cm株距和80kg·hm-2施磷肥条件下,两年的平均种子产量最高,为1234kg·hm-2;而对于‘Norgold’,2015和2016年皆为45cm株距、80kg·hm-2施磷肥条件下的种子产量最高,分别为1613和1428kg·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。
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 P2 O5）on seed yield and yield components of two Melilotusofficinaliscultivars,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 P2 O5 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 P2 O5 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.
作者
骆凯
张吉宇
王彦荣
LUO Kai;ZHANG Ji- yu;WANG Yan- tong(State Key Laboratory of Grassland Agro ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou 730020, Chin)
出处
《草业学报》
CSCD
北大核心
2018年第7期112-119,共8页
Acta Prataculturae Sinica
基金
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)
国家“草地农业创新引智基地”(B12002)资助
关键词
黄花草木樨
株距
磷肥量
种子产量
通径分析
Melilotus officinalis
within row spacing
phosphorus fertilizer rates
seed yields
path coefficientanalysis
