种植抗性品种是防治病害的最好手段。很早以来人们一直致力于选育抗稻瘟病品种,并付出了极大的努力,特别是近几年对抗性要求更高,通过与国外品种杂交从而育成推广具有高抗性的品种。这些品种推广初期确实表现高度抗性,完全没有必要喷散农药。但几年后,随着种植面积扩大,发病愈加严重,这种抗性逆转现象在各地发生,成了严重的社会问题。草笛、田稻等就是如此,在南朝鲜统一系统品种也出现感病,给该国的绿色革命带来了严峻的问题,这一点 Planting resistant varieties is the best way to control diseases. Since a long time ago, people have been devoting themselves to the breeding of the blast resistant varieties and have made great efforts. Especially in recent years, they have higher requirements for confrontation and have developed and promoted highly resistant varieties by crossing with foreign varieties. The early stages of the promotion of these varieties do show a high degree of resistance, there is no need to spray pesticides. However, a few years later, as the area under cultivation expanded and the incidence became even more serious, this phenomenon of resistance reversal occurred everywhere and became a serious social problem. That was the case with the grass-flute, the paddy rice and so on, as well as the susceptibility to the unifying system of South Korea, which posed a serious problem for the country’s green revolution