广州地区鲜食玉米锈病发生动态

生态学杂志

广州地区鲜食玉米锈病发生动态

田耀加,赵守光^**,张晶,黄亮华,陈红弟,王秋燕

（广州市农业科学研究院特用玉米所，广州 510308）

出版日期:2013-11-10 发布日期:2013-11-10

Temporal dynamics of fresh corn rust in Guangzhou.

TIAN Yao-jia, ZHAO Shou-guang^**, ZHANG Jing, HUANG Liang-hua, CHEN Hong-di, WANG Qiu-yan

(Institute of Special Maize, Guangzhou Academy of Agricultural Sciences, Guangzhou 510308, China)

Online:2013-11-10 Published:2013-11-10

摘要/Abstract

摘要：

2012年8—12月，田间自然条件下采用5点取样法调查了锈病在秋播鲜食玉米田的发生动态，并探讨了锈病发生与鲜食玉米不同生育时期的关系。结果表明：锈病于9月中旬鲜食玉米苗期起开始发病，在玉米整个生育时期内呈逐渐上升趋势，至12月锈病发病率达到90%以上；田间鲜食玉米扬花散粉期是锈病侵染为害敏感期，病害为害程度在该生育时期急剧上升，发病率和病情严重度显著高于苗期和拔节期；锈病在当地秋播鲜食玉米发生为害严重，田间管理应加强玉米扬花期锈病防治。

关键词: 亚热带森林, 敏感性分析, 冠层反射率, PROSPECT5模型, 4SAIL模型

Abstract: A field investigation was conducted to monitor occurrence dynamics of fresh corn rust, with sampling method of five-spot from August to December, 2012. In addition, the relationship between corn rust and corn growth period was also analyzed. The results showed that occurrence of rust increased with corn growing. The disease appeared from middle of September (seedling stage of fresh corn), and reached up to 90% in December. Fresh corn was sensitive to rust at flowering stages, at which damage of the disease increased rapidly, and both disease incidence and severity were significantly higher than that at seedling or jointing stages. Our study also indicated that rust made serious damage on fresh corn of autumn planting. Therefore, control measurement to the disease should be advanced, especially at corn flowering period.

Key words: subtropical forest, 4SAIL model, sensitivity analysis., PROSPECT5 model, canopy reflectance

田耀加,赵守光**,张晶,黄亮华,陈红弟,王秋燕. 广州地区鲜食玉米锈病发生动态[J]. 生态学杂志.

TIAN Yao-jia, ZHAO Shou-guang**, ZHANG Jing, HUANG Liang-hua, CHEN Hong-di, WANG Qiu-yan. Temporal dynamics of fresh corn rust in Guangzhou.[J]. cje.

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