The characters of SP1 variation plants at maturity stage also appeared big changes.SP1 variation plants had short growing period, high seed setting rate, loose plant-type and clavated spike-type.

成熟期SP1代异株性状也有较大，表现为生育期显著缩，率有所提高，株型向松散趋势发展，穗型均表现为棍棒形，株高、穗粒数和千粒重品种间表现不一致。

Rust of Stipa bungeana, caused by Uredo sp., is the main disease in the steppe region of Gansu east.

摘要长芒草锈病是陇东典型草原主要病害，本试验对不同发病程度长芒草株高、地上生物量及品质进行了测定。