干热河谷退化山地柱花草品种(系)比较试验

2007-2009年在元谋干热河谷退化山地对12个柱花草品种(系)进行比较试验研究.观测研究牧草物候期、地上生物量、叶茎比、青干比、分枝数及株高、营养成分等生产性状和经济指标.试验结果表明,CIAT11362柱花草是综合性能较优的材料,年均产量、旱季产量和3年保存率最高,是较耐旱的牧草,适应干旱和半干旱地区种植,年均干...

Comparison of Stylosanthes guianensis in degraded mountain Yuanmou of the dry-hot Valley

It has carried on the compared experiments for 12 Stylosanthes guianensis in degraded Mountain Yuanmou of the dry-hot Valley from 2007 to 2009.Their growth period,the biomass above the ground,leaf/stem ratio,dry/fresh ratio,the number of divarication,stub height etc.were recorded.The results showed that: 1)The best combination property of forage was S.guianensis CIAT11362,it was highest for average yield,dry yield and survival rate of three years of S.guianensis CIAT11362,whose average dry yield was 20.31 t/ha,dry seasons dry yield was 7.17 t/ha,survival rate of three years was 87.5%,it is a more drought-resistant grass,adapted to arid and semi-arid region.2) GC1579 S.guianensis and S.guianensis reyancv No.5 are optimum integrated traits can be used as dry and hot valley to promote grass.3) the 90089 and the West S.guianensis overall performance,though not particularly outstanding,but have the advantages which in special environment should not be ignored,they maybe ideal under the different performance requirements.