共查询到19条相似文献,搜索用时 62 毫秒
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以番茄灰霉病菌为靶标菌,采用菌丝生长速率法、菌丝干重法和离体叶片法分别测定了有机硅、蓖麻油、吐温、烷基萘磺酸盐、烷基酚聚氧乙烯醚、木质素、氮酮及磷酸酯盐等18个品种的表面活性剂对啶菌(噁)唑的增效作用.结果表明:采用不同的毒力测定方法,表面活性剂与杀菌剂所表现出的协同作用有所差异.其中0201B、NP-7、TX100在生长速率法和菌丝干重法中均表现出对啶菌(噁)唑的增效作用,而离体叶片法中仅有添加Silwet L77的处理可显著提高药剂防效,对菌丝的抑制活性最高达83.69%,而对照的抑制率为52.09%. 相似文献
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通过对52.5%(口恶)唑菌酮·霜脲氰水分散粒剂和几种常用杀菌剂不同浓度稀释液喷雾防治温室黄瓜霜霉病田间药效试验,初步验证该药剂具有预防长久、治疗快速的特点,对黄瓜生长安全,在黄瓜生产中具有良好的应用前景. 相似文献
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创制杀菌剂啶菌恶唑生物活性及应用研究(Ⅰ)--番茄灰霉病 总被引:17,自引:2,他引:17
啶菌恶唑(试验代号:SYP-Z048)是一种结构新颖、作用方式独特的新型杀菌剂,具有保护、治疗效果及良好的内吸传导性。对子囊菌、担子菌和半知菌引起的多种植物病害具有良好的防治作用。啶菌恶唑对番茄灰霉病具有很高的离体杀菌活性和优异的田间防治效果。室内离体试验啶菌恶唑对番茄灰霉病(Botrytiscinerea )的EC50值为0.206 /ml;1998~2002年多点的田间小区试验结果表明:啶菌恶唑在处理剂量200~400 g a.i./hm2、施药2~3次、间隔期6~8d的条件下对番茄灰霉病有良好的防治效果,防效优于目前生产上推广使用的多菌灵、腐霉利、菌核净、嘧霉胺等常规杀菌剂。 相似文献
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[目的]通过田间药效试验验证40%啶菌噁唑·福美双悬浮剂对黄瓜灰霉病的实际防治效果。[结果]试验结果表明:40%啶菌噁唑·福美双悬浮剂1333 mg a.i./L处理对灰霉病的防治效果可达90%以上,高于传统药剂,田间推荐用量1000~1600 mg a.i./L。 相似文献
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创制杀菌剂啶菌恶唑的生物活性及应用研究(Ⅱ)黄瓜灰霉病 总被引:4,自引:4,他引:4
啶菌恶唑是一种结构新颖、作用方式独特的新型杀菌剂,具有保护、治疗效果及良好的内吸传导性。对子囊菌、担子菌和半知菌引起的多种植物病害具有良好的防治作用。啶菌恶唑对黄瓜灰霉病具有很高的杀菌活性,室内离体试验结果啶菌恶唑对黄瓜灰霉病(Botrytis cinerea Pers)的EC50值为0.199μg/ml;1998~2002年多点的田间小区试验结果表明:啶菌恶唑对黄瓜灰霉病具有良好的防治效果,在200~400g a.i./hm^2处理剂量下、施药2~3次、间隔期6~8d可有效控制黄瓜灰霉病的发生与危害。防效优于目前生产上推广使用的多菌灵、腐霉利,菌核净、嘧霉胺等常规杀菌剂。 相似文献
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3%啶虫脒乳油防治黄瓜蚜虫药效试验 总被引:3,自引:1,他引:3
田间药效试验表明,3%啶虫脒乳油防治黄瓜蚜虫具有较好的防治效果。用量30~50g a.i./hm^2时,药后7d,防效能保持在97.53%以上,显示了该药剂具有较好的持效期及良好的推广、应用前景。 相似文献
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1996年对蛇眼蚧发生较重的茶园,在其孵化期用40%杀扑磷乳油和25%亚胺硫磷乳油进行防治试验。结果表明,40%杀扑磷乳油1000-2000倍液、25%亚胺硫磷乳油400倍液对蛇眼蚧均有良好防效,尤以40%杀扑磷防效显著,持效期可达22天。 相似文献
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Xiaojing Yan Shuning Chen Wei Sun Xiaoxin Zhou Daibin Yang Huizhu Yuan Daoquan Wang 《International journal of molecular sciences》2022,23(3)
Botrytis cinerea is considered an important plant pathogen and is responsible for significant crop yield losses. With the frequent application of commercial fungicides, B. cinerea has developed resistance to many frequently used fungicides. Therefore, it is necessary to develop new kinds of fungicides with high activity and new modes of action to solve the increasingly serious problem of resistance. During our screening of fungicide candidates, one novel sulfonamide compound, N-(2-trifluoromethyl-4-chlorphenyl)-2-oxocyclohexyl sulfonamide (L13), has been found to exhibit good fungicidal activity against B. cinerea. In this work, the mode of action of L13 against B. cinerea and the field control effect on tomato gray mold was studied. L13 had good control against B. cinerea resistant to carbendazim, diethofencarb, and iprodione commercial fungicides in the pot culture experiments. SEM and TEM observations revealed that L13 could cause obvious morphological and cytological changes to B. cinerea, including excessive branching, irregular ramification or abnormal configuration, and the decomposition of cell wall and vacuole. L13 induced more significant electrolyte leakage from hyphae than procymidone as a positive control. L13 had only a minor effect on the oxygen consumption of intact mycelia, with 2.15% inhibition at 50 μg/mL. In two locations over 2 years, the field control effect of L13 against tomato gray mold reached 83% at a rate of 450 g ai ha−1, better than the commercial fungicide of iprodione. Moreover, toxicological tests demonstrated the low toxicological effect of L13. This research seeks to provide technical support and theoretical guidance for L13 to become a real commercial fungicide. 相似文献
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田间试验结果表明,45%灰霉灵WP400,500和600倍三种浓度处理的防效分别为67.70%,64.24%和53.90%,均高于对照药剂多菌灵(40.59%)和菌核净(30.35%)达极显著水平,其中灰霉灵稀释500倍处理的防效与600倍处理的防效差异显著,而与400倍处理的防效处于同一水平。灰霉灵的室内抑菌效果 理想。 相似文献