摘要
播期是影响作物生长与产量的重要因素之一。为筛选适宜延安地区种植的谷子品种与播期,以该区近年引进的10个中早熟谷子品种为试材,采用单因素试验设计,设播种期5月8日、15日、22日和29日4个处理,在留苗密度均为30万株/hm2条件下,研究了不同播期对谷子产量、农艺性状(株高、穗粗、穗长、茎粗、单穗重、穗粒重)和抗病性(白发病发病率、红发病发病率)的影响。结果表明:参试品种不同播期下的谷子产量、穗粗和白发病发病率存在显著差异,而其他指标差异均不显著。4个播期下小香米、冀创1号和冀谷20产量较高,其中,小香米和冀谷20均于5月15日播种时产量达到最高,且对白发病具有抗性;冀创1号于5月22日播种时产量较高,与最高产量差异不大,且对白发病具有抗性。综合考虑谷子产量和抗病性表现认为,适合在延安地区种植的谷子品种为小香米、冀谷20和冀创1号,其适宜播期分别为5月15日、5月15日和5月22日。
Sowing date is one of the important factors that affect the growth and yield of crops. In order to study the effects of different sowing dates on the yield,agronomic characters and disease resistance on millet and screen the suitable sowing dates and millet varieties in Yan’an, with 10 millet varieties as materials,the experiment set up four different sowing dates （May 8,May 15,May 22 and May 29） and measured the yield, agronomic characters and disease resistance.The results showed that the yield, ear diameter, incidence of millet downy mildew of different varieties had significant differences with different sowing dates. The yields of Small Fragrant Rice, Jigu 20 were higher under the four sowing dates, the Small Fragrant Rice and Jigu 20 had the highest yield and resistance to downy mildew under the sowing date of May 15,Jichuang No.1 had the higher yield and resistance sowed on May 22. In conclusion,the Small Fragrant Rice,Jigu 20 and Jichuang No.1 are the good choices to plant in Yan’an and the proper sowing date should be May 15,May 15 and May 22,respectively.
出处
《河北农业科学》
2015年第5期1-3,32,共4页
Journal of Hebei Agricultural Sciences
基金
国家谷子糜子产业技术体系项目(CARS-07-12.5)
陕西省科技统筹创新工程计划项目(2014KTZB02-03-03)
关键词
谷子
播种期
产量
农艺性状
抗病性
Millet
Sowing dates
Yield
Agronomic characters
Disease resistance
