| 稻曲病产量损失测定及调查测报因子研究 |
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| 引用本文： | 刘年喜,王金辉,刘二明,李小娟,郑和斌. 稻曲病产量损失测定及调查测报因子研究[J]. 植物保护, 2010, 36(4): 145-147. DOI: 10.3969/j.issn.0529-1542.2010.04.032 |
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| 作者姓名： | 刘年喜 王金辉 刘二明 李小娟 郑和斌 |
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| 作者单位： | 1. 湖南省植保植检站,长沙,410005
2. 湖南农业大学生物安全科学技术学院,长沙,410128 |
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| 基金项目： | 湖南省科技重大专项项目 |
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| 摘 要： | 稻曲病是水稻穗部的重要真菌性病害。本研究分析了13个供试水稻品种每穗稻曲病病粒数与水稻产量损失的线性关系,根据每个品种线性方程及南方稻区实际情况,得出了田间稻曲病经济允许水平、成灾因子,即平均每穗病粒数分别为0.57、5.44粒。
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| 关 键 词： | 稻曲病 产量损失 线性方程 测报因子 |
Rice yield loss caused by Ustilaginoidea virens and the factors for investigation and forecasting |
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| Liu Nianxi,Wang Jinhui,Liu Erming,Li Xiaojuan,Zheng Hebin. Rice yield loss caused by Ustilaginoidea virens and the factors for investigation and forecasting[J]. Plant Protection, 2010, 36(4): 145-147. DOI: 10.3969/j.issn.0529-1542.2010.04.032 |
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| Authors: | Liu Nianxi Wang Jinhui Liu Erming Li Xiaojuan Zheng Hebin |
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| Affiliation: | 1. Plant Protection and Quarantine Station of Hunan Province, Changsha 410005, China; 2. College of Bio safety and Science Technology, Hunan Agricultural University, Changsha 410128, China |
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| Abstract: | Rice false smut caused by Ustilaginoidea virens is an important panicle fungus disease on rice. The linear relationships between the average diseased grains per panicle and the yield loss of 13 rice cultivars were studied. Based on these linear relationships, combined with the linear equation with the practical situation in the rice production areas in South China, we established the factors of economic threshold, epidemics of rice false smut. The average diseased grains per panicle were 0.57 and 5.44, respectively. |
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| Keywords: | Ustilaginoidea virens yield loss linear equation forecasting factor |
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