| 玉米弯孢菌叶斑病空间旋转模型(GRSM) |
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| 引用本文： | 李海春,宋贽,陶桂洪.玉米弯孢菌叶斑病空间旋转模型(GRSM)[J].湖北农业科学,2009,48(8). |
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| 作者姓名： | 李海春 宋贽 陶桂洪 |
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| 作者单位： | 沈阳农业大学理学院,沈阳,110161 |
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| 基金项目： | 辽宁省博上启动基金，农业部国家稂食丰产工程辽宁玉米专项 |
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| 摘 要： | 模型z=f(x)或z=f(y)绕 z 轴旋转,得到空间对称模型z=f(x2+y2)0.5)及不对称模型z=f(ax2+by2)0.5),其中x,y是空间距离.这些空间旋转模型可以反映玉米弯孢茵叶斑病空间发展情况,同时通过SAS软件模拟得到掖单13和海试16上的较优空间分布模型.同时解释田间不同气候条件下,该病害出现对称和不对称分布模式的原因.
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| 关 键 词： | 玉米弯孢茵叶斑病 旋转理论 模型 分布模式 |
General Revolution Spatial Models (GRSM) for Maize Leaf Spot Caused by Curvularia lunata |
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| LI Hai-chun,SONG Zhi,TAO Gui-hong.General Revolution Spatial Models (GRSM) for Maize Leaf Spot Caused by Curvularia lunata[J].Hubei Agricultural Sciences,2009,48(8). |
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| Authors: | LI Hai-chun SONG Zhi TAO Gui-hong |
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| Institution: | College of Science;Shenyang Agricultural University;Shenyang 110161;China |
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| Abstract: | Disease gradients of Curvularia lunata were studied on point source by artificial inoculum in two corn fields in Shenyang region. The disease gradients were described well by general revolution spatial models(GRSM) z=f((ax2+by2) 0.5) and z=f((x2+y2) 0.5) ,which were isotropic or anisotropic according to different conditions,and reflected the disease dynamic. The GRSM of z=f((x2+y2) 0.5) was formed by rotating the function z=f(x) or z=f(y) about the z-axis,where z is the number of lesions caused by Curvulari... |
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| Keywords: | Curvularia lunata revolution theory model contribution pattern |
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