这是在随县环潭、城郊、草店、英店等地发现的一种水稻苗期病害,对水稻秧苗为害相当严重,常使秧苗成团枯黄,远望象火烧了一样。病株一般是心叶以下的第一片叶萎蔫枯死,重者也会引起全株枯死。秧田和早插本田均能发生。症状:发病初期,在叶片上出现黄白色园形或椭园形斑点,病斑轮廓很不清楚,略呈水 This is a county in the county ring, suburb, grasshoppers, British shops and other places found a rice seedling diseases, damage to rice seedlings is quite serious, often make the seedlings into a group of yellow, Yuanwang like a fire. The diseased plants are usually the first leaves below the heart leaves wilted dead, severe cases will cause the whole plant to die. Seedling and Honda can be inserted as early as possible. Symptoms: In the early stages of the disease, a yellow-white round or oval-shaped spot appears on the leaves. The outline of the lesion is unclear, slightly watery