| 12种杀菌剂对牡丹黄斑病的室内毒力测定 |
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| 引用本文： | 贺春玲.12种杀菌剂对牡丹黄斑病的室内毒力测定[J].中国农学通报,2015,31(19):122-125. |
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| 作者姓名： | 贺春玲 |
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| 作者单位： | 河南科技大学 |
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| 基金项目： | 洛阳市科技攻关项目“油用牡丹高产栽培技术”(1203209B) |
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| 摘 要： | 为筛选出可有效防治牡丹黄斑病的有效药剂,在实验室条件下,采用菌丝生长速率法比较分析12种药剂在10 mg/L质量浓度下对牡丹黄斑病的相对抑制率,测定12种杀菌剂对牡丹黄斑病的室内毒力。结果表明:在10 mg/L质量浓度下70%百菌清可湿性粉剂对牡丹黄斑病病菌的毒力最强,相对抑制率为(65.19±2.80)%;其次是80%代森锰锌可湿性粉剂,相对抑制率为(64.81±4.49)%;32%叶斑净对牡丹黄斑病病菌的毒力最弱,相对抑制率为(25.56±4.01)%。毒力测定结果表明50%嘧霉·多菌灵可湿性粉剂对牡丹黄斑病病菌的毒力最强,EC50值最小,为2.6268 mg/L。其次是75%百菌清可湿性粉剂,EC50值次之,为2.9781 mg/L。32%叶斑净可湿性粉剂对牡丹黄斑病的毒力最弱,EC50值最大,为26.3957 mg/L。研究结果为牡丹黄斑病的大田防治提供药剂筛选依据。
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| 关 键 词： | 牡丹黄斑病 相对抑制率 毒力测定 杀菌剂 |
| 收稿时间： | 2014/9/11 0:00:00 |
| 修稿时间： | 2015/3/21 0:00:00 |
Toxicity Measurement of 12 Fungicides on Phyllosticta commonsiy from Peony |
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| Abstract: | Abstract: In order to this study is to select effective chemicals to control Phyllosticta commonsii, indoor toxicity of twelve fungicides on Phyllosticta commonsii, the relative inhibition rate of 12 kinds of fungicides at 10 mg/L against Phyllosticta commonsii were tested by the hypha growth rate in lab and toxicity measurement with five different concentration. The results showed that at 10 mg/L against Phyllosticta commonsii the relative inhibition rate of 70% chlorothalonil WP was strongest, with the (65.19±2.80)%, then the relative inhibition rate of the 80% mancozeb was the (65.19±2.80)%, the relative inhibitory rate of 32% YBJ was (25.56 4.01)%. The results indicated in laboratory that eight kinds of fungicides in the test concentration had a certain inhibition effect on the growth of Phyllosticta commonsii. Muldew-carbendazim (50%) showed the best effective to the Phyllosticta commonsii, its EC50 value only was 2.6268 mg/L. The followed was chlorothalonil WP (70%), its EC50 values was 2.9781 mg/L. In addition carbendazim and hymexazol also had effective inhibition. These studies provided the basis for controlling Phyllosticta commonsii in field. |
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| Keywords: | Phyllosticta commonsii the relative inhibition rate toxicity measurement fungicide |
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