近些年来,晚稻稻瘟病危害几乎每年都有发生,且有越来越重的趋势。特别是今年晚稻生长前中期的阴雨日数明显增多,叶瘟的发生相当普遍,为后期穗颈瘟的发生提供和积累了大量有效菌源,晚稻生产已面临穗颈瘟大发生的威胁,必须引起高度重视。长期以来,对晚稻穗颈瘟的防治生产上普遍存在着以下几个误区:1.迷信抗瘟品种,从当前情况看能绝对抗稻瘟病的品种是没有的,所谓的抗瘟品种也只是相对的。虽然抗性强的品种发病率明显 In recent years, the harm of rice blast occurred in late rice almost every year, and there is an increasing tendency. In particular, the number of cloudy and rainy days before and after the growth of late rice in this year increased significantly, and the occurrence of leaf blast was quite common, which provided and accumulated a large number of effective bacterial sources for the occurrence of late occurrence of panicle blast. Late rice production has been threatened by large occurrence of panicle neck blast. highly valued. For a long time, there are several misunderstandings about the prevention and control of late rice panicle blast: 1. Superstitious anti-blast varieties, from the current situation can absolutely resist the rice blast varieties are not, the so-called anti-blast varieties are only relative of. Although the incidence of resistant varieties is obvious