| 引起早衰的水稻病害的调查及其对产量的影响 |
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| 引用本文： | 李湘民,谢金水,李祖章,尹建华,万建林. 引起早衰的水稻病害的调查及其对产量的影响[J]. 江西农业学报, 2006, 18(5): 77-79 |
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| 作者姓名： | 李湘民 谢金水 李祖章 尹建华 万建林 |
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| 作者单位： | 江西省农业科学院,江西,南昌,330200;江西省农业科学院,江西,南昌,330200;江西省农业科学院,江西,南昌,330200;江西省农业科学院,江西,南昌,330200;江西省农业科学院,江西,南昌,330200 |
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| 基金项目： | 科技部国家工程技术研究中心项目 |
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| 摘 要： | 调查了引起早衰的水稻病害菌核杆腐病和水稻纹枯病在江西南昌和吉安的发生情况,在两地菌核杆腐病病丛率为0%~10%,病株率为0%~1.6%,而纹枯病病丛率为22%~100%,病株率为6.15%~64.68%。测定了“金优桂99”水稻纹枯病的产量损失,其1、3、5和7级的产量损失率分别为4.29%、7.73%、10.73%和18.45%,纹枯病病情指数(x)与千粒重下降率(y1)的线性模型为y1=0.3485+4.8921x,与结实率降低率(%)(y2)的线性模型为y2=1.7655+11.8407x,与产量损失率(%)(y)的线性模型为y=1.2040+20.4680x。
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| 关 键 词： | 早衰 菌核杆腐病 水稻纹枯病 产量损失 线性模型 |
| 文章编号： | 1001-8581（2006）05-0077-03 |
| 收稿时间： | 2006-05-25 |
| 修稿时间： | 2006-05-25 |
Investigation of Rice Diseases Resulting in Premature Senility and Their Influence on Rice Yield |
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| LI Xiang-min,XIE Jin-shui,LI Zu-zhang,YIN Jian-hua,WAN Jian-lin. Investigation of Rice Diseases Resulting in Premature Senility and Their Influence on Rice Yield[J]. Acta Agriculturae Jiangxi, 2006, 18(5): 77-79 |
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| Authors: | LI Xiang-min XIE Jin-shui LI Zu-zhang YIN Jian-hua WAN Jian-lin |
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| Affiliation: | Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China |
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| Abstract: | The occurrence of rice diseases resulting in premature senility was investigated in Nanchang and Ji'an.The diseased-hill and diseased-tiller rates of rice sclerotia rotted stem ranged 0%～10% and 0%～1.6% respectively; while those of rice sheath blight ranged 22%～100% and 6.15%～64.68% respectively in the two locations.The yield loss ratios of "Jinyougui 99"caused by grade 1,3,5 and 7 of rice sheath blight were 4.29%,7.73%,10.73% and 18.45% respectively.The relationship of yield loss ratio(y) and disease index(x) can be described as follows: y=1.2040+20.4680x. |
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| Keywords: | Premature senility Rice sheath blight Rice sclerotia rotted-stem Yield loss Linear model |
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