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的主要病害，本试验发病程度长芒草株高、地上生物量及品质进行了测定。

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代变异株性状也有较大变化，现为生育期显著缩短，结实率有所提高，株型向松散趋势发展，穗型现为棍棒形，株高、穗粒数和千粒重的变化品种间现一致。