| 大丽轮枝菌在茄田土壤中的分布及抽样方法 |
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| 引用本文： | 郭岩,杨之为.大丽轮枝菌在茄田土壤中的分布及抽样方法[J].植物保护,1999(6). |
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| 作者姓名： | 郭岩 杨之为 |
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| 作者单位： | 西北农业大学植物保护系!陕西杨凌712100 |
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| 摘 要： | 对茄子黄萎病在田间的空间分布及取样方法进行了研究,并探讨了田间土壤带菌量的准确测定方法。研究结果表明:用分布型指数法测定茄田土壤中微菌核的空间分布型,当菌核数量在8-63 ～39-93 个/g 干土范围内,为聚集分布。当茄田发病率小于75 % 时,病株在田间均属聚集分布;发病率大于75 % 时呈均匀分布。土壤中微菌核的调查方法以棋盘式为最适宜。
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| 关 键 词： | 茄子黄萎病 大丽轮枝菌 空间分布型 抽样方法 |
Studies on the spatial pattern and sampling method of verticillium wilt on eggplant. |
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| Guo Yan,Yang Zhiwei.Studies on the spatial pattern and sampling method of verticillium wilt on eggplant.[J].Plant Protection,1999(6). |
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| Authors: | Guo Yan Yang Zhiwei |
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| Abstract: | The spatial pattern and sampling methods of verticillium wilt on eggplant were studied. Tests of monitoring pathogen inoculum in soil samples indicated that the amount of microsclerotia in soil and the disease incidence were significantly correlative. The amount of microsclerotia in heavily infested field was higher than in light infested field. The spatial pattern of inoculum of microsclerotia in eggplant fields was recognized by the analysis of aggregation index. Results demonstrate that the spatial pattern of microsclerotia was fitted to the aggregation distribution when microsclenotia at the range of 8.63-39.97 sclerotium/g dry soil. The sampling method on the chessboard style was most suitable. |
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| Keywords: | verticillium wilt of eggplant Verticillium dahliae spatial pattern sampling method |
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