【摘要】 以13个来自西藏不同生态区的青稞(Hordeum vulgare L. var. nudum HK. f.)品种为材料,研究播期、播种密度、肥料运筹及其互作对青稞籽粒产量和产量性状的影响。结果表明:参试青稞品种的籽粒产量与产量性状在品种间、播期间均存在显著(P <0.05)或极显著(P <0.01)差异;春播青稞籽粒产量显著低于秋播(P <0.05)。播种密度和肥料运筹对参试品种籽粒产量影响不显著。每穗粒数在播种密度和肥料运筹间差异显著(P <0.05),千粒质量在肥料运筹间差异显著(P <0.05)。更多还原

【Abstract】 The purpose of the current research was to determine the effects of sowing date, sowing density, fertilization strategy, and their interactions on grain yield and yield-attributing characters of hulless barley. A field trial was carried out to investigate 13 hulless barley(Hordeum vulgare L.var. nudum HK.f.) varieties originating from different ecological zones in Tibet with respect to their grain yield and yield-attributing characters. The results showed that grain yield and yield-attributing characters varied significantly(P < 0.05)or very significantly(P < 0.01) with variety. Moreover, treatments with different sowing dates(October 28, 2018; January 1, 2019) had very significant(P < 0.01) differences in grain yield and yield-attributing factors; spring-sown wheat had a significantly(P < 0.05)lower grain yield than autumn-sown wheat. On the other hand, neither sowing density nor fertilization strategy had a significant impact on grain yield; however, grain number per spike differed significantly(P < 0.05) with sowing density and fertilization strategy.Moreover, the treatments with different fertilization strategies had significant(P < 0.05) differences in thousand grain weight.更多还原