| 小麦根腐病产量损失及经济阈值研究 |
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| 引用本文： | 侯生英,张 贵. 小麦根腐病产量损失及经济阈值研究[J]. 西北农林科技大学学报(自然科学版), 2002, 30(1): 76-78 |
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| 作者姓名： | 侯生英 张 贵 |
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| 作者单位： | 青海省农林科学院,植保所,青海,西宁,810016 |
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| 基金项目： | 青海省科委科技攻关项目 ( 94-2 -10 1) |
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| 摘 要： | 自然发病田中 ,病级与穗粒数下降率、千粒重下降率均呈显著正相关。田间土壤接种试验表明 ,同一品种在相同气候条件下 ,土壤带菌量是小麦根腐病发生和危害程度的关键因素 ;腊熟期小麦根腐病病情指数与产量损失率显著正相关 (r=0 .972 5 * ,n=4)。拌种防治小麦根腐病 ,防治指标为当地近年主栽品种上的病情指数。
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| 关 键 词： | 小麦根腐病 产量损失 经济阈值 |
| 文章编号： | 1000-2782(2002)01-0076-03 |
| 收稿时间： | 2001-01-02 |
| 修稿时间： | 2001-01-02 |
Study on the losses of wheat yield and the ELT to wheat root rot |
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| TONG Shui dong. Study on the losses of wheat yield and the ELT to wheat root rot[J]. Journal of Northwest A&F University（Natural Science Edition）, 2002, 30(1): 76-78 |
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| Authors: | TONG Shui dong |
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| Affiliation: | (Institute of Plant Protection Research,Qinghai Academy of Agriculture and Forestry,Xining,Qinghai 810016,China) |
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| Abstract: | Under the natural condition, the disease severity scale has significantly positive correlation to the reduced rate of the ear grains and 1 000 kernels weight.The result of inoculated soil trail showed that damage degree of Bipolaris Sorokinianum (Sacc.)Shoemader on a same variety and climate is mainly influenced by the amount of fungus in soil.The relativity between the disease indes in mature period and the loss is significant positivity (r=0.972 5 *,n=4).Seed dressing is used for controlling Wheat BSS,ELT is basied on disease index of varieties at local area in recent years. |
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| Keywords: | Bipolaris sorokinianum (Sacc.) Shoemaker yield loss ELT |
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