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陇南地区小麦种植由于垂直分布悬殊,条锈病菌在该区内既能越冬又能越夏。不仅是我国条锈重要的越夏区之一,而且还是常发易变区。解放三十多年来该区小麦品种抗锈性的丧失大体经历了五次重大的变化,导致条锈病曾十一次大流行和中度流行。从三十多年来小麦条锈菌病的发生史看出,小麦品种的单一化和抗锈亲本的单一化是导致条锈病流行的主要因素。自1978年以后,全区普遍采取“以抗锈为前提、多抗源、多品种……”的良种推广原则和“在不同区域种植不同抗源品种”的品种布局原则,八年中,也有气候条件对条锈病发生十分有利的年份,但条锈病一直未造成较大的流行,据种子部门预测,今后随着种子工作的加强,
Longnan wheat planting as a result of the vertical distribution of disparity, stripe rust in the area both overwinter and summer. It is not only one of the important summer areas in our country, but also is often volatile. Over the past 30 years, the loss of rust resistance of wheat cultivars in the area has undergone five major changes in general, leading to eleven pandemic and moderate epidemics of stripe rust. From the history of wheat stripe rust in more than thirty years, we can see that the simplification of wheat cultivars and the simplification of anti-rust parents are the main factors leading to the spread of stripe rust. Since 1978, the region has generally adopted the principle of popularizing fine seeds with the prerequisite of resistance to rust, multiple sources of resistance and multiple varieties, and the principle of variety layout for planting different anti-source varieties in different regions. In the past eight years, Climate conditions have a very favorable year for stripe rust, but stripe rust has not caused a large epidemic all the time. According to the prediction of the seed sector, with the enhancement of seed work in the future,