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异针茅栽培驯化初报 被引量:9

Study on Cultivation and Tame of Stipa aliena Keng
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摘要 野生异针茅在海拔3756m的大武地区"黑土型"退化草地上3年的栽培和生长特性观测结果表明:异针茅越冬率达98%,第2年7月中旬第2次生殖生长开始,25%的植株在8月15日腊熟,至9月下旬停止生长达到孕穗及孕穗以上的生殖枝占65%;鲜草产量1160g/m2,干草产量516.2 g/m2,种子产量8.6 g/m2,茎叶比1∶0.74.第3年各物候期比第2年提前4~10d,并与当地野生种基本一致;8月下旬盖度达到100%,叶茎比高,干草产量达到864.3g/m2,与冷地早熟禾相近,种子产量比第2年增加近5倍.异针茅特别适合于高寒草原生长,在高寒草甸的"黑土型"退化草地上也表现出较好的适应能力. The cultivation and the observation of growth characteristics about wild Stipa aliena Keng were conducted for three years on 'Black soil type' degraded grassland at Dawu region where the altitude is 3756m.The results showed that the rate of hibernation was 98%.In the second year,25% of Stipa aliena Keng were ripe on 15,August.From reproduction in mid-July to late September,Stipa aliena Keng stop growing and the reproductive branches at booting stage accounted for 65%.The yields of fresh grass,hay,seeds were 1160g/m~2,516.2 g/m~2,8.6 g/m~2respectively and leaf stem ratio was 1∶0.74.In the third year,each growth phase of Stipa aliena Keng accorded with the local wild grass and 4~10 days ahead compared with the second year.The coverage was about 100% in late August and the leaf stem ratio was high.The yield of hay was 864.3g/m~2similarly to Poa crymophila.Additionally,the yield of seeds was five times more that in the second year.Stipa aliena Keng was a high quality forage with many good property such as higher resistance,early green-up,more tiller,higher yield,easier cultivation,good palatability and so on.It showed better adaptability on 'Black soil type' degraded grassland in alpine meadow.
作者 施建军 马玉寿 王柳英 王彦龙 董全民 SHI Jian-jun  MA Yu-shou  WANG Liu-ying  WANG Yan-long  DONG Quan-min 
出处 《中国草地学报》 CSCD 2006年第4期 84-86,114,共4页 Chinese Journal of Grassland
基金 "十五"国家科技攻关计划重大项目"江河源区退化草地治理技术与示范"(2001BA606A-02)子专题"优良牧草筛选与人工草地种植、管理技术与示范"部分内容
关键词 异针茅 驯化 物候期 产量 Stipa aliena Keng Tame Growth phase Yield
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