| 不同施氮量对优质杂交油菜菌核病的影响 |
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| 引用本文： | 侯再芬,谢启强,邓其英,王克贵.不同施氮量对优质杂交油菜菌核病的影响[J].安徽农业科学,2006,34(21):5576-5577. |
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| 作者姓名： | 侯再芬 谢启强 邓其英 王克贵 |
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| 作者单位： | 贵州省思南县农作物病虫预测预报站,贵州思南,565109;贵州省思南县农作物病虫预测预报站,贵州思南,565109;贵州省思南县农作物病虫预测预报站,贵州思南,565109;贵州省思南县农作物病虫预测预报站,贵州思南,565109 |
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| 摘 要： | 试验结果表明,不同施氮量间病株率和病情指数差异均极显著;施氮量300~375 kg/hm2与0~225 kg/hm2的病株率和病情指数差异极显著。病株率和病情指数以施氮量375 kg/hm2最高,平均为15.19%和13.21;不施氮的最低,平均为7.04%和4.62。施氮量0~375kg/hm2的处理产量损失率平均为3.56%~18.29%;施氮量、病株率、病情指数、产量损失率间呈极显著正相关。甘蓝型黄籽双低优质杂交油菜适宜施氮(纯N)量为150~225 kg/hm2,菌核病危害较轻,能获得3 000 kg/hm2以上高产。
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| 关 键 词： | 油菜菌核病 病株率 病情指数 施氮量 |
| 文章编号： | 0517-6611（2006）21-5576-02 |
| 收稿时间： | 04 6 2006 12:00AM |
| 修稿时间： | 2006-04-06 |
Study on the Effect of Applied Amount of Nitrogen on Sclerotinia sclerotiorum of Good Quality Hybrid Rape |
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| HOU Zai-fen, et al.Study on the Effect of Applied Amount of Nitrogen on Sclerotinia sclerotiorum of Good Quality Hybrid Rape[J].Journal of Anhui Agricultural Sciences,2006,34(21):5576-5577. |
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| Authors: | HOU Zai-fen |
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| Institution: | Station of Crops Pest Forecasting, Sinan, Guizhou 565109 |
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| Abstract: | The results showed that there were very significant differences between percentage of diseased plant and index of disease in different amount of applied nitrogen. There were significant differences in the percentage of diseased plant and the index of disease between the applied amount of nitrogen of 300 - 375 kg/hm^2 and 0 - 225 kg/hm^2. The percentage of diseased plant and index of disease reached the highest value at applied amount of nitrogen of 375 kg/hm^2, and average value was 15.19% and 13.21 respectively. Non-nitrogen treatment was the lowest, and the average value was 7.04% and 4.62 respectively. At applied amount of nitrogen 0 - 375 kg/hm^2, the percentage of yield loss caused by disease was 3.56% - 18.29%, There was significant positive correlation among the applied amount of nitrogen, percentage of diseased plant, index of disease and percentage of yield loss. The applied amount of nitrogen of 150 - 225 kg/hm^2 was suitable for yellow seed double-low hybrid rape, the harmness of Sclerotinia sclerotiorum was lighter and the yield can attain over 3 000 kg/hm^2. |
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| Keywords: | Sclerotinia sclerotiorum Rate of diseased plant Index of disease Applied amount of nitrogen |
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