高寒牧区当年生人工混播草地建植试验

The establishment experiment of annual mixed artificial grassland in alpine region

通过试验证明 ,在碌曲县高寒草甸草地区建立一年生人工草地 ,采取禾本科与豆科牧草混播 ,可明显提高草地产草量和牧草品质。由于草层结构合理 ,促进了产草量的提高 ,混播草地产草量较单播平均提高2 6 % ,差异极显著 (P <0 0 1) ;混播处理茎叶比明显低于单播 ,其中燕麦抽穗期降低 0 5 6 ,完熟期降低 2 5 5 ,说明随着牧草生长期的延长 ,混播草地叶量明显增加 ,主要是由于箭豌豆的介入而使茎叶比显著降低 ,牧草品质变优。

The establishment experiment of annual artificial grassland in alpine meadow of Luqu county indicated that both the biomass and quality were improved by mixing grass with legume The fresh yield was 26% higher than solo seeding, stem leaf ratio was also significantly lower At the heading period, the stem leaf ratio of oat reduced 0 56, and 2 55 decreased during mature period, which show that the leaf quantity increased remarkably along with the extension of growth period