菜豆病害的发生及防治措施

• 作 者: 谷峰 于永辉
• 机 构: 吉林省蔬菜花卉科学研究所,
• 出 处: 农村科学实验
• 发表日期: 1999年06期
• 关键词: 菜豆病害 皮层腐烂 枯萎病 根腐 最适温度 甲基硫菌灵 凹陷斑 种子重量 可湿性粉剂 防治方法

一、枯萎病 1 症状:花期开始显病,病株干部叶片先变黄,后逐渐向上扩展,叶脉变褐,近脉处变黄,枯干或脱落,茎一侧或全部维管束变为黄褐或黑褐色,根部变色,皮层腐烂引致根腐,且易于拔起,结荚显著减少,已荚背部腹缝合线也逐渐变为黄褐色,花期后病株大量枯死。 2 发生条件:发病最适温度24℃-28℃相对湿度80%,地势低洼,平畦种植灌水频繁,肥力不

First, the symptoms of Fusarium Wilt 1: florescence began to make the disease, the diseased plant cadres leaves first yellow, then gradually upward expansion, brown veins, near the veins yellow, withered or off, the stem side or all of the vascular bundle into yellow brown Or dark brown, root discoloration, cortex decay caused root rot, and easy to pull up, pod significantly reduced pod back abdominal suture also gradually turned brown, a large number of blight after flowering dead. 2 conditions: the onset of the optimum temperature of 24 ℃ -28 ℃ relative humidity of 80%, low-lying, flat irrigation frequent irrigation, fertility is not