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，本试验对不同发病程度长芒草株高、地上生品质进了测定。

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.

SP1代变异株性状也有较大变化，表现为生育显著缩短，结实率有所提高，株型向松散趋势发展，穗型则均表现为棍棒形，株高、穗粒数和千粒重的变化品种间表现不一致。