当前位置: 首页 > 文章 > 玉米弯孢菌叶斑病传播梯度模型 植物病理学报 2003,33 (5) 456-461
Position: Home > Articles > Spread gradient model of leaf spot disease (Curvularia lunata) in maize Acta Phytopathologica Sinica 2003,33 (5) 456-461

玉米弯孢菌叶斑病传播梯度模型

作  者:
傅俊范;李海春;白元俊;严雪瑞;潘荣光
单  位:
辽宁农业科学院植保所;沈阳农业大学植保学院
关键词:
玉米弯孢菌叶斑病;传播梯度模型;最远传播距离;传播速度
摘  要:
根据植物病害流行学原理 ,采用人工接种方法 ,在田间造成玉米弯孢菌叶斑病不同的发病梯度 ,分析连续 2年玉米弯孢菌叶斑病传播动态。利用SPSS统计软件构建了此病害的传播梯度模型 ,结果表明指数模型是沈阳地区玉米弯孢菌叶斑病传播梯度的最佳模型。接种 2个月 ,掖单 13玉米弯孢菌叶斑病传播梯度最佳模型是x =9.6 0 6×EXP(- 0 .2 82 9×d) ,海试 16最佳模型是x =7.15 4×EXP(- 0 .2 35 1×d) (x:病情指数 ,d :距菌源中心的距离 )。预测玉米弯孢菌叶斑病在 2个月最远传播距离为 2 8m ;传播速度为 0 .4~ 0 .5m/d。
译  名:
Spread gradient model of leaf spot disease (Curvularia lunata) in maize
作  者:
FU Jun-fan 1, LI Hai-chun 1, BAI Yuan-jun 2, YAN Xue-rui 1, PAN Rong-guang 2 ( 1 Plant Protection College, Shenyang Agricultural University; Shenyang 110161, China; 2 Plant Protection Institution, Liaoning Academy of Agricultural Science, Shenyang 110161, China)
关键词:
corn Curvularia leaf spots; disease gradient model; the furthest distance of disease spread; velocity of spread
摘  要:
According to the principles of plant disease epidemiology, the dynamics of spread of leaf spot disease in two successive years was studied by artificial inoculation, which causes the disease gradient of Curvularia lunata in maize in experi_ mental fields. The disease gradient model, which was established using the software for SPSS, shows that exponential model is the optimum one in Shenyang region. During the maize growing season of two months, the results show that x=9.606×EXP(-0.2829×d) is the optimum model for the maize cultivar's Yeddan 13, and x=7.154×EXP(-0.2351×d) for cultivar's Haishi 16. The furthest spread distance of the disease is about 28 m within two months of the growth season, and the velocity of spread of the disease between 0.4-0.5 m/d.

相似文章

计量
文章访问数: 7
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊