| 张平平,宋金东,冯小军,商鸿生,杨家荣,宋梁栋,胡小平.关中麦田产壳玉米秸秆密度与小麦赤霉病穗率的关系[J].麦类作物学报,2015,35(7):1022 |
| 关中麦田产壳玉米秸秆密度与小麦赤霉病穗率的关系 |
| Relationship between Density of Perithecium-generating Corn Stems and Fusarium Head Blight Incidence |
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| DOI：10.7606/j.issn.1009-1041.2015.07.20 |
| 中文关键词: 小麦赤霉病；玉米；产壳秸秆密度 病穗率 |
| 英文关键词:Wheat scab Density of perithecium-generating corn stem Fusarium head blight incidence |
| 基金项目:国家公益性行业（农业）科研专项（201303016）；高等学校创新引智计划项目（B07049） |
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| 中文摘要: |
| 为了准确预测关中地区小麦赤霉病的病穗率,采用田间模拟试验和田间调查相结合的方法,建立了麦田产壳玉米秸秆密度与穗表赤霉菌孢子数的关系模型y=1.115+2.506x,并在实验室前期关中小麦赤霉病病穗率预测模型的基础上,建立了基于麦田产壳玉米秸秆密度的小麦赤霉病预测模型。预测模型中产壳玉米秸秆密度参数的灵敏度变化范围为0.09~0.13,为中等灵敏参数。利用2014年关中15个代表县以及杨凌1986-1992年的实测数据对预测模型进行了评价,该模型的预测准确度在75%以上。综合来看，此预测模型使用简单，预测准确度高。 |
| 英文摘要: |
| In order to predict acurately the Fusarium head blight incidence in Guanzhong region,Shaanxi,field simulation and investigation methods were used.The relationship between the density of perithecium-generating corn stems and Fusarium head blight incidence was established as y=1.115+2.506x using the results of field simulation.The prediction model for Fusarium head blight incidence was modified using the density of perithecium-generating corn stems based on the previous model in our laboratory.The sensitivity of the prediction model using perithecium-generating corn stem parameter varied from 0.09 to 0.13,belonged to middle sensitivity parameter.The new model was evaluated using actual data investigated in wheat fields of 15 counties in Guanzhong region,Shaanxi in 2014 and the data of Yangling from 1986 to 1992.Results showed that the prediction accuracy of the model was above 75%.Overall,the prediction model is easy to use and has high prediction accuracy. |
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