| 王海燕,张忠山.河南小麦叶枯类病害春季流行的时间动态规律研究[J].植物保护,2000,26(1):4-6. |
| 河南小麦叶枯类病害春季流行的时间动态规律研究 |
| Study on the epidemics with temporal dynamics of wheat leaf blight disease in Spring in Henan |
| |
| DOI： |
| 中文关键词: 小麦 叶枯类病害 时间动态规律 |
| 英文关键词:wheat, leaf blight, epidemic dynamic |
| 基金项目: |
| 王海燕 张忠山 |
| 河南省农科院植保所,郑州450002 |
| 摘要点击次数: 598 |
| 全文下载次数: 834 |
| 中文摘要: |
| 1997～1998年的研究结果表明:小麦叶枯病害在河南麦田春季的流行曲线基本呈S型曲线。始发期一般在3月20日～4月10日,指数增长期大约10～20d,该期流行速率最高;4月10～20日以后该病进入逻辑斯蒂增长期,可持续30～40d,流行速率比指数增长期稍低,没有明显的衰退期;影响小麦叶枯类病害始发期的气象因子为3月份的日照、降水量和气温,4月份的气温、日照、降水日数、相对湿度与发生程度关系密切。河南主栽小麦品种中没有对叶枯类病害免疫的品种,70%以上的主栽小麦品种为感叶枯病品种。 |
| 英文摘要: |
| The temporal dynamic of wheat leaf blight disease was studied in Spring in Henan during 1997-1998. The results showed that the epidemic curve of wheat leaf blight disease in wheat fields existed basically S type curve. The onset phase of the disease was March 20-April 10 and the exponential growth phase was about 10-20 days. The epidemic speed of this phase was lower than that of the exponential phase. Occurrence of the disease was influenced by sunlight, rainfall, temperature in March. Its epidemic degree was influenced by temperature, sunlight, rainfall duration and relative humidity in April. The main wheat cultivated varieties of more than 70% were almost susceptible to the disease,and none is immune variety. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
