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

1.摘要长芒锈病是陇东典型原的主要病害，本试验对不同发病程度长芒、生物量及品质进行了测定。

2.This essay based on research of basic data analyses the resources situation of Mn-ore in Gansu Province,specifies the characters of resources of polianite and main types of polianite.

2.从甘肃锰矿资源现状、基本特点、主要类型,以及今后的找矿方向等问题进行初步的探讨。