一、引言小麦锈病是我国小麦上危害性最大的一类病害。根据资料它在我国各地区常作间歇性的发生,给小麦生产带来很大的损失。以关中冬麦区小麦条锈病的发生情况为例,1942年以来,于42,46,43,49,和50年均曾猖獗发生。1950年,全国性小麦锈病 I. Introduction Wheat rust is one of the most harmful diseases on wheat in China. According to the information, it occurs intermittently in various regions of our country intermittently, bringing great losses to wheat production. Taking the occurrence of wheat stripe rust in the winter wheat area of ​​Guanzhong as an example, since 1942, it has been rampant in 42, 46, 43, 49 and 50 years. 1950, the national wheat rust