| 小麦白粉病对小麦产量影响初报 |
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| 引用本文： | 刘文敏,苏祥瑶,陈彤.小麦白粉病对小麦产量影响初报[J].河北农业大学学报,1989(4). |
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| 作者姓名： | 刘文敏 苏祥瑶 陈彤 |
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| 作者单位： | 河北省石家庄地区农科所，北京大学生物系，北京大学生物系 |
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| 摘 要： | 本文根据1986至1988年在石家庄地区田间试验的白粉病对小麦产量影响的结果,分析了不同生育期白粉病流行对产聿的影响,给出了不同小麦白粉病病情指数对产量影响的三种数学模型,即关键点模型,多点模型和曲线下面积模型。从关键点模型得知,抽穗后期病梧指数与小麦产量的相关程度最大。综合评价这三种模型,多点模型最佳。
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| 关 键 词： | 小麦白粉病 产量损失 关键点模型 多点模型 曲线下面模型 |
Primary Studies on Influence of Powdery Mildew on Yield Loss of Winter Wheat |
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| Liu Wenmin.Primary Studies on Influence of Powdery Mildew on Yield Loss of Winter Wheat[J].Journal of Agricultural University of Hebei,1989(4). |
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| Authors: | Liu Wenmin |
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| Abstract: | In this paper,we developed three empirical models:critical point (CP)model,multiple point(MP)model,and area-under-curve(AUC), model based on observed yield loss data of winter wheat caused by pow- dery mildew(Erysiphe graminis D.C.f.sp.trilici)from 1986 to 1988 in Shiji- azhuang district.It was shown from CP model that the relation between disease index of late heading stage and yield of Winter wheat had the higest correlation coefficient.Evaluating the three models integrally,the MP model was the best. |
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| Keywords: | Wheat powdery mildew Yield loss Critical point model Multiple point model Area-under-curve model |
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