| 四种杀菌剂对苜蓿根和根颈腐烂病菌的室内毒力测定 |
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| 引用本文： | 李敏权,杨宝生,侯军,张自和.四种杀菌剂对苜蓿根和根颈腐烂病菌的室内毒力测定[J].草地学报,2002,10(4):270-273. |
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| 作者姓名： | 李敏权 杨宝生 侯军 张自和 |
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| 作者单位： | 1. 甘肃农业大学值保系, 兰州, 730070;2. 甘肃省草原生态研究所, 兰州, 730070 |
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| 基金项目： | 科技部“黄土高原退耕还草生态恢复与草畜产业化技术开发与示范”项目资助 (编号 2 0 0 0 -k0 1-0 4-0 1) |
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| 摘 要： | 采用室内平皿生长速率法,研究四种杀菌剂对苜蓿根和根颈腐烂病的病原、尖孢镰刀菌、锐顶镰刀菌和半裸镰刀菌的毒力测定。结果表明,四种药剂对三种病原菌都有显著的抑制作用。其中多菌灵、甲基硫菌灵、枯腐宁和枯萎绝四种药剂对锐顶镰刀菌的有效中浓度(EC50)分别为84.93、221.00、53.74和7.90μg/mL,对尖孢镰刀菌EC50分别为70.12、125.76、35.75和5.87μg/mL,对半裸镰刀菌分别为49.55、126.61和221μg/mL。以枯萎绝的抑菌作用最为突出,对三种镰刀菌的EC50都在10μg/mL以下,枯腐宁次之,甲基硫菌灵最差。四种药剂的相关系数均在0.96以上,药剂浓度与抑制作用呈正相关。
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| 关 键 词： | 苜蓿 根和根颈腐烂病 镰刀菌 多菌灵 毒力 |
| 文章编号： | 1007-0435(2002)04-0270-04 |
| 收稿时间： | 2002-04-09 |
| 修稿时间： | 2002年4月9日 |
Toxicity Measurement of Carbendazim on Fusarium spp. in Alfalfa |
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| LI Min quan ,YANG Bao sheng ,HOU Jun ,ZHANG Zi he.Toxicity Measurement of Carbendazim on Fusarium spp. in Alfalfa[J].Acta Agrestia Sinica,2002,10(4):270-273. |
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| Authors: | LI Min quan YANG Bao sheng HOU Jun ZHANG Zi he |
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| Institution: | 1. Gansu Agricultural University, Lanzhou 730070, China;2. Gansu Grassland Ecological Research Institute, Lanzhou 730070, China |
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| Abstract: | Fusarium oxysporum, F. acuminatum and F. semitectum caused crowm and root rot of alfalfa. The toxicity and efficacy of carbendazim, carbendazimthiram, experimental chemotherapeutant and thiophanatemethyl to them were measured with mycelium growth rate test method. The result indicated that these fungicides had inhibition effect on Fusarium spp.The results indicated the mean median effective concentration value(EC50)was different. The EC50 value of carbendazimthiram was 5.29μg/mL.But carbendazim was 68.2μg/mL, Even thiophanatemethyl was 166.79μg/mL. |
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| Keywords: | Medicago Sativa L Corwn and root rot Fusarium spp Carbendazim Toxicity |
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