| 利用前茬作物残茎根防除直播稻田杂草 |
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| 引用本文： | 王敬亚,董立尧,李俊,张宏军.利用前茬作物残茎根防除直播稻田杂草[J].植物保护学报,2009,36(1):82-88. |
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| 作者姓名： | 王敬亚 董立尧 李俊 张宏军 |
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| 作者单位： | 王敬亚,董立尧,李俊,Wang Jingya,Dong Liyao,Li Jun(南京农业大学植物保护学院农药科学系,农业部作物病虫害监测与防控重点开放实验室,南京,210095);张宏军,Zhang Hongjun(农业部农药检定所生物测定室,北京,100026)
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| 摘 要： | 采用滤纸培养皿法,研究了五种油菜和七种小麦残茎根对直播稻田主要杂草千金子、稗草和鳢肠的化感抑草作用,并采用模拟大田环境的盆钵法对抑草作用较强的品种进行验证试验和对下茬水稻的安全性进行评估.结果显示:史力丰和汇油50两个油菜品种的水提取液对三种杂草均表现出较好的抑制作用,尤其对千金子的萌发抑制作用较强,抑制率分别为65.33%和55.33%,对杂草的幼根也具有十分明显的抑制作用,化感指数RI值分别达到-0.82和-0.85;不同浓度的史力丰残茎根的水提取液对杂草表现出低浓度促进、高浓度抑制的现象;模拟大田试验中,史力丰的残茎根在25 kg/m3的混土用量下能很好地抑制千金子、稗草和鳢肠生长.彤值分别可达-0.91、-0.64和-0.67,且对水稻较安全.研究表明,在田间留一定量的史力丰残茎根进行浅耕混土处理是杂草生态防除的一项有效措施.
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| 关 键 词： | 作物残茎根 化感抑草作用 生态防除 |
| 收稿时间： | 2008/10/30 0:00:00 |
The utilization of crop residues from former rotation to control weeds in direct-seeding rice field |
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| Wang Jingy,Dong Liyao,Li Jun and Zhang Hongjun.The utilization of crop residues from former rotation to control weeds in direct-seeding rice field[J].Acta Phytophylacica Sinica,2009,36(1):82-88. |
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| Authors: | Wang Jingy Dong Liyao Li Jun and Zhang Hongjun |
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| Institution: | Department of Pesticide Science, College of Crop Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Agriculture, Nanjing 210095, Jiangsu Province, China;Department of Pesticide Science, College of Crop Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Agriculture, Nanjing 210095, Jiangsu Province, China;Department of Pesticide Science, College of Crop Protection, Nanjing Agricultural University, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects, Ministry of Agriculture, Nanjing 210095, Jiangsu Province, China;Institute for the Control of Agrochemicals, Ministry of Agriculture, Beijing 100026, China |
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| Abstract: | |
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| Keywords: | crop straws allelopathy ecological control |
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