石膏防治水稻赤枯病效果良好

• 机 构: 新干县农科所,
• 出 处: 农业科技
• 发表日期: 1974年04期
• 关键词: 稻赤枯病 石膏 水稻根系 孕穗期 生育阶段 土壤环境 生理病害 呼吸作用 早稻 耙田

水稻赤枯病,群众叫“翻浆”,是由于土壤环境不良,使水稻根系的好气性呼吸作用受阻,产生热能少,影响对钾的吸收而引起的一种生理病害。发病时普遍而无中心病株,也不传染,在相同类型的田块,除有品种间的差异和管理条件不同外,几乎同时表现症状。同时,在水稻各个生育阶段都可能发病,但主要在分蘖期到孕穗期发生。

Rice blight, the masses called “dip” is due to poor soil environment, so that the aerobic respiratory resistance of rice roots blocked, resulting in less heat, affecting the absorption of potassium caused by a physiological disease. When the disease is common and no central diseased strains, nor infection, in the same type of plots, except for differences in species and management conditions are different, almost simultaneously show symptoms. At the same time, the disease may occur in all stages of rice growth, but mainly occurs at tillering stage to booting stage.