CAJ | 학술논문

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。
파기시영향작물생장여산량적중요인소지일。위사선괄의연안지구충식적곡자품충여파기，이해구근년인진적10개중조숙곡자품충위시재，채용단인소시험설계，설파충기5월8일、15일、22일화29일4개처리，재류묘밀도균위30만주/hm2조건하，연구료불동파기대곡자산량、농예성상（주고、수조、수장、경조、단수중、수립중）화항병성（백발병발병솔、홍발병발병솔）적영향。결과표명：삼시품충불동파기하적곡자산량、수조화백발병발병솔존재현저차이，이기타지표차이균불현저。4개파기하소향미、기창1호화기곡20산량교고，기중，소향미화기곡20균우5월15일파충시산량체도최고，차대백발병구유항성；기창1호우5월22일파충시산량교고，여최고산량차이불대，차대백발병구유항성。종합고필곡자산량화항병성표현인위，괄합재연안지구충식적곡자품충위소향미、기곡20화기창1호，기괄의파기분별위5월15일、5월15일화5월22일。
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.