【摘要】 在5a中华羊茅(Festuca china)和冷地早熟禾(Poa alpigena)人工草地上,进行不同微量元素肥料配比的追肥试验。试验结果表明:(1)在中华羊茅和冷地早熟禾处理组中,进行的硼砂、硫酸铜和硫酸锌的追肥处理,对牧草的地上生物量和种子产量有提高作用。在中华羊茅草地里,硼肥处理分别提高地上生物量和种子产量为12.2%和10.2%;在冷地早熟禾草地里分别提高13.2%和10.2%,差异均显著;但Cu肥、Zn肥处理组间的差异不显著;(2)硼肥对中华羊茅和冷地早熟禾两种植株的分蘖密度和有效小穗数影响显著,分别提高12.3%、9.3%、10.5%和8.8%;铜肥和锌肥效果的差异不显著。更多还原

【Abstract】 For 5 years the test of effect of trace fertilizer on cultivated grasslands of Poa alpigena and Festuca china was carried out by means of top-dressing.The results showed that the effects of B,CuSO4 and ZnSO4 on the seed yield and the above-biomass were significant in both sampling plots.B fertilizer could increase above-biomass and seed yield 12.2%,10.2% respectively in the grassland of Festuca china,and 13.2% and 10.2% respectively in the grassland of Poa alpigena,which difference was significant.but there was no significant difference in both treatment groups of CuSO4 and ZnSO4 fertilizer.Besides,the effect of B-fertilization on density of tillers and effective ears was significant in both grasslands,which was increased by13.2%,9.3%,10.5%,8.8% respectively,but the effects of CuSO4 and ZnSO4 was not significant.更多还原