我区水稻赤枯病,在以往年份亦常零星发生,唯数量少、为害轻,人们多未注意。去年此病发生比较普遍而严重,引起了人们的重视,现就此病的调查与分析报导如下,以供参考。 (一) 病状:分蘗期开始显现,先在下部叶端变黄或斑驳退绿,后沿叶缘向下扩展以至半叶或全叶变黄,变色部分密布黑褐色 Rice red blight in our area, often sporadic occurrences in previous years, only a small number of negligence, people are more attention. Last year, the disease was more common and serious, aroused people’s attention, the disease is now under investigation and analysis reported below, for reference. (A) the symptoms: tillering began to appear, first in the lower leaves yellow or mottled back green, along the leaf margin down to half or yellow leaves, yellow discoloration part of the dark brown