大豆紫斑病发生情况及防治试验

• 作 者: 林坤明 林长城 黄水明 陈鹤群
• 机 构: 龙溪地区农科所,龙溪地区农科所,龙溪地区农科所,龙溪地区农科所
• 出 处: 福建农业科技
• 发表日期: 1984年01期
• 关键词: 大豆紫斑病 大豆种子 浅紫色 春大豆 大豆幼苗 豆粒 成熟期 百粒重 大豆田 病害

大豆紫斑病是我区大豆种子常见的病害之一,尤其在大豆成熟期,受高温多雨影响,病害尤重.一般春大豆比秋大豆发病重.水改旱的大豆田比一般田重.大豆幼苗、叶片、茎秆、豆荚和豆粒均能受害,但以豆粒上的病斑最明显.受病种子的种皮上产生浅紫色至暗紫色斑,常出现在脐附近.重病粒会龟裂,瘪小,品质变劣.百粒重降低,影响产量.同时发芽率低,甚至不能发芽.叶片受害,常造成干枯,穿孔.茎秆、豆荚受害严重时,病斑愈合枯死.

Soybean spot disease is one of the common diseases of soybean seeds in our region, especially in the maturity of soybean, affected by high temperature and rain, the disease is particularly serious.Generally, spring soybean is heavier than autumn soybean, , Leaves, stalks, pods and legumes can suffer, but to spot the most obvious lesion on the seed coat of the disease caused by the seed coat of light purple to dark purple spots, often appear near the umbilicus. Small, poor quality. 100-weight reduction, affecting the yield. At the same time the germination rate is low, and even can not germinate. Leaf damage, often resulting in dry, perforated. Stems, pods serious damage, lesion healing dead.