论文部分内容阅读
发生情况甘蔗黑穗病(又称黑粉病)是最先发现的甘蔗病害之一,它在许多国家造成了严重损失。此病普遍分布于东半球的中国、印度、毛里求斯、南非等。在西半球直到1940年才出现于阿根廷。阿根廷在1943年黑穗病突然爆发,造成了当地制糖工业的严重损失。本病的主要症状是在蔗株的梢头生出一条向下卷曲的鞭状物,长数寸至数尺。鞭状物的中间是一条心柱,在心柱外面附着有大量的病菌厚垣孢子,即黑粉。患黑穗病的甘蔗在未产生鞭状物之前,一般是株形变细,叶片狭窄,
Occurrence Sugarcane smut (also known as powdery mildew) is one of the first to find sugarcane disease, which has caused serious losses in many countries. The disease is widely distributed in the eastern hemisphere China, India, Mauritius, South Africa and so on. In the western hemisphere did not appear in Argentina until 1940. The sudden onset of smut in Argentina in 1943 caused severe losses to the local sugar industry. The main symptom of this disease is the appearance of a downwardly curling whip on the cane tip, a few inches to a few feet in length. Whip in the middle is a column of hearts, attached to the heart outside the column a large number of bacteria chlamydospores, black powder. Sugarcane suffering from smut in the absence of whip, before the general shape is thinner, narrow leaves,