植物生长促生菌浸种对高寒地区燕麦生长及固氮的效应

Effects of seed soaking with plant growth promoting bacteria(PGPR) suspension on the growth and nitrogen fixation efficiency of oat in alpine area

将燕麦Avena sativa种子用植物生长促生菌(PGPR)悬浮液浸泡处理后播种于栽培盆中,观测其对燕麦生长、产量及与产量形成有关的株高、根长、绿叶数、干质量等部分农艺性状的影响以及浸种后植物的固氮效率。结果表明:植物生长促生菌浸种能促进燕麦株高和根系生长,增加燕麦的叶片数,提高燕麦生物产量和固氮效率。在10个菌剂中,W6增加干质量和叶片数最明显;O3,T1,W6和W5促进株高效果较好;W6和M处理对促进根系的生长效果最好。

Pot experiment was conducted for testing the effects of seed soaking with plant growth promoting bacteria （PGPR） suspension on the growth, agriculture performance including growth rate,dry matter yield, height, number of green leaf as well as the nitrogen fixation efficiency of oat in alpine area. The result showed that PGPR could not only promote the height, root and leaf growth, butalso increase the dry matter yield and nitrogen fixation amount. Out of all treatments with 10 strains,W6 showed the best ability for dry matter yield increasing; 03, T1, W6 and W5 showed promising ability for height increasing; W6 and M showed best performance for root growth.