甘肃省陇南地区是我国小麦条锈菌重要越夏区之一,也是重要的常发易变区。具有品种抗条锈性变异速度快、变异复杂的特点,素以条锈病“病窝”之称而著名。在以往的调查研究基础上可以认为,陇南是新小种产生的策源地。我国北方麦区推广种植的小麦品种首先在这一带丧失抗锈性;伴随品种抗锈性的丧失,条锈菌的许多生理小种最先在这一地区被发现。在条锈病流行中陇南直接影响着黄淮海广大麦区。因此,在条锈病防治中它占据着关键地位,研究解决陇南小麦品种抗条锈性丧失问题具有重大意义。本文将着重探讨陇 Longnan region of Gansu Province is one of the important over-summer regions of wheat stripe rust in our country, and is also an important frequent variable region. With a variety of anti-stripe rust mutation speed, complex variation features, known as stripe rust “nest” is known. Based on the previous research, Longnan can be considered as a source of new race. Wheat cultivars promoted in northern China wheat fields lost their rust resistance in this area at first. With the loss of rust resistance of varieties, many physiological races of stripe rust were first discovered in this area. Longnan in the epidemic of stripe rust directly affects the Huang-Huai-Hai wheat area. Therefore, it occupies a key position in the prevention and control of stripe rust, and it is of great significance to study and solve the problem of loss of resistance to stripe rust in Longnan wheat cultivars. This article will focus on Long