播期、播种密度及肥料运筹对青稞产量及产量性状的影响

Effects of Sowing Date, Sowing Density, and Fertilization Strategy on the Grain Yield and Yield-attributing Characters of Hulless Barley

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)。

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.