稻瘟病是水稻生长中最为严重的一种病害,如何区别水稻品种对稻瘟病是感性品种或抗性品种,采用直接观察的方法,就可及早发现,而且准确率很高。 1、观叶片区别法在水稻分蘖结束后,拔节孕穗前,即在6月25日后7月10日前,深入田间实际观查,如果在稻株的上边3片叶往下的老叶上有大小相间的褐斑,斑点周围组织坏死,就可以确认为该品种是抗病品种。因为稻瘟病菌在稻 Rice blast is one of the most serious diseases in rice growth. How to distinguish rice varieties from susceptible or resistant varieties to rice blast can be detected as soon as possible by direct observation, and the accuracy is very high. 1, the concept of leaf differentiation method After the end of rice tillering, before jointing blubber, that is, in the June 25 after July 10, the depth of the actual field investigation, if the top of the rice plant in the three leaves down the old leaf size Phase of brown spots, necrosis of the tissue around the spots, we can confirm that the varieties are resistant varieties. Because the rice blast bacteria in rice