稻紫鞘(鞘腐)的药剂防治试验初报

• 作 者: 张超然
• 机 构: 镇江地区农科所
• 出 处: 江苏农业科学
• 发表日期: 1982年11期
• 关键词: 包颈 药剂防治试验 枯孕穗 田间小区试验 剑叶 病者 苯来特 供试水稻品种 紫褐色 胶悬剂

稻紫鞘为水稻叶鞘腐败病菌(Acrocylin-drium oryzae Sawada)侵染所引起,是叶鞘腐败病的又一典型症状.该病近年来在早稻、杂交稻和一些国际稻系统的中稻上发生普遍.据测定,一般产量损失10%左右,重病者可损失20%以上.近年观察,水稻发病后稻穗变小或形成枯孕穗及包颈烂鞘等,导致不实率增加和千粒重降低,显著影响水稻的高产稳收.

Rice sheath is caused by the infection of Acrocylin-drium oryzae Sawada and is another typical symptom of leaf sheath rot disease, which has been widespread in early rice, hybrid rice and some rice plants in international rice systems. It has been determined that the general yield loss of about 10%, seriously ill patients can be more than 20% loss.In recent years, the observation of rice after the onset of smaller panicles or the formation of bouts and neck rotten sheath, resulting in an increase in false detection rate and reduced 1000-grain weight, a significant impact High yield and stability of rice.