CN105851040B - 一种含烯丙苯噻唑和异菌脲的农药颗粒剂 - Google Patents
一种含烯丙苯噻唑和异菌脲的农药颗粒剂 Download PDFInfo
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- WHHIPMZEDGBUCC-UHFFFAOYSA-N probenazole Chemical compound C1=CC=C2C(OCC=C)=NS(=O)(=O)C2=C1 WHHIPMZEDGBUCC-UHFFFAOYSA-N 0.000 title claims abstract description 39
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- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/38—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< where at least one nitrogen atom is part of a heterocyclic ring; Thio analogues thereof
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/12—Powders or granules
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/80—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
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- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
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Abstract
本发明涉及一种含烯丙苯噻唑和异菌脲的农药颗粒剂,有效成分由以下重量比的成分组成:烯丙苯噻唑5‑8%,异菌脲2‑3%,其中烯丙苯噻唑和异菌脲的重量比为:5‑8:2‑3。本发明适用于防治旱育秧期的水稻稻瘟病,其配方增效显著,内吸性好,能有效的控制病害,具有省时省工省力的功效。
Description
技术领域
本发明涉及农药技术领域,具体涉及一种含烯丙苯噻唑和异菌脲的农药颗粒剂。
背景技术
烯丙苯噻唑,英文通用名为:probenazole,是日本明治制果药业株式会社开发的一种诱导免疫型杀菌剂,通过激发植物本身对病害的免疫(抗性)反应来实现防病效果,通过植物根部吸收,并较迅速地渗透传导至植物体各部分。烯丙苯噻唑处理水稻,能促进根系吸收,保护作物不受稻瘟病菌和稻白叶枯病菌的侵染。
异菌脲,英文通用名为:iprodione,是一种广谱触杀型保护性杀菌剂,同时具有一定的治疗作用,也可通过根部吸收起内吸作用。适用于防治蔬菜、观赏作物的叶斑病、灰霉病、菌核病、根腐病,对水稻稻瘟病也有较好的防治效果。
现阶段,水稻育秧基本实现从之前的水育秧为主到目前的旱育秧为主,而秧苗病害仍以药剂兑水喷雾法进行防治,比较费时费力。在农村劳力短缺的情况下,省力型防治病虫害的方法越来越受关注,本发明通过有效成分烯丙苯噻唑和异菌脲复配,制成农药颗粒剂,其内吸传导性好,能在育秧作业时或秧苗期施用,具有省时省工的功效。
目前,将烯丙苯噻唑与异菌脲复配的研究未见有相关的报道。
发明内容
本发明要解决的技术问题是,提供一种含烯丙苯噻唑和异菌脲的农药颗粒剂,用于旱育秧期稻瘟病的防治,其配方增效显著,内吸性好,能有效的控制病害,具有省时省工省力的功效。
本发明采取的技术方案是:一种含烯丙苯噻唑和异菌脲的农药颗粒剂,有效成分由烯丙苯噻唑和异菌脲组成,其中烯丙苯噻唑和异菌脲的重量比为:5-8:2-3,优选的,烯丙苯噻唑和异菌脲的重量比为8:2。
所述的烯丙苯噻唑在农药颗粒剂中的重量百分比为5-8%,异菌脲在农药颗粒剂中的重量百分比为2-3%。
本发明的农药颗粒剂加入的辅助剂包括填料、粘结剂、分散剂、润湿剂、崩解剂、着色剂、稳定剂或其它有益于有效成分在制剂中稳定和药效发挥的物质,都是农药制剂领域中常用或允许使用的各种成分。
本发明具有以下优点和显著的技术效果:
(1)烯丙苯噻唑和异菌脲的作用机制不同,相互混配有利于缓解病菌抗性发展。
(2)室内生测结果表明,烯丙苯噻唑和异菌脲按一定的比例复配对稻瘟病菌增效明显,有利于减少农药施用量和降低农药成本。
(3)本发明制备成农药颗粒剂,结合旱育秧作业时或育秧期间施用,减轻了农事操作,有利于节约劳动成本。
具体实施方式
以下结合实施例对本发明的技术方案和有益效果作进一步说明,本发明所述的百分比均为重量百分比。
一、制备实施例
实施例1:8%烯丙苯噻唑·异菌脲颗粒剂(有效成分比6:2)
配方:按重量比称取烯丙苯噻唑6%,异菌脲2%,萘磺酸盐甲醛缩合物4.5%,十二烷基硫酸钠3%,聚乙烯醇3.5%,膨润土补足至100%。
实施例2:9%烯丙苯噻唑·异菌脲颗粒剂(有效成分比6:3)
配方:按重量比称取烯丙苯噻唑7%,异菌脲3%,萘磺酸盐甲醛缩合物3%,十二烷基硫酸钠3.5%,聚乙烯醇3%,凹凸棒土12%,高岭土补足至100%。
实施例3:10%烯丙苯噻唑·异菌脲颗粒剂(有效成分比8:2)
配方:按重量比称取烯丙苯噻唑8%,异菌脲2%,十二烷基硫酸钠2.5%,羧甲基纤维素3.5%,硅藻土15%,膨润土补足至100%。
实施例4:7%烯丙苯噻唑·异菌脲颗粒剂(有效成分比5:2)
配方:按重量比称取烯丙苯噻唑5%,异菌脲2%,萘磺酸盐甲醛缩合物5%,十二烷基硫酸钠2.5%,聚乙烯醇5%,高岭土补足至100%。
制备方法:将上述实施例1-4所述的配方组分混合均匀,粉碎,加水润湿后充分搅拌均匀,再用螺杆挤压造粒机造粒,干燥后过筛即得含烯丙苯噻唑·异菌脲颗粒剂。
二、生物活性试验实施例
本发明的生物活性实施例分为室内毒力测定试验和田间药效试验。
实施例1:烯丙苯噻唑、异菌脲及复配剂对稻瘟病的室内毒力测定。
经预试确定各药剂有效抑制浓度范围后,将烯丙苯噻唑、异菌脲及其混配剂按有效成分含量梯度系列稀释5个浓度,设清水对照。参照《农药室内生物测定试验准则杀菌剂》进行,采用菌丝生长速率法测定药剂对稻瘟病的毒力。72h后用十字交叉法测量菌落直径,计算各处理净生长量、菌丝生长抑制率。
将菌丝生长抑制率换算成机率值(y),药液浓度(μg/mL)转换成对数值(x),以最小二乘法求得毒力回归方程(y=a+bx),并由此计算出每种药剂的EC50值。
根据孙云沛法的共毒系数法(CTC)来评价药剂混用的增效作用,即CTC≤80为拮抗作用,80<CTC<120为相加作用,CTC≥120为增效作用。统计结果如表1所示:
供试药剂 | 配比 | EC<sub>50</sub>(mg/L) | 共毒系数(CTC) |
烯丙苯噻唑(A) | / | 2.05 | / |
异菌脲(B) | / | 3.15 | / |
A:B | 5:2 | 1.66 | 137.0 |
A:B | 6:2 | 1.45 | 155.4 |
A:B | 7:2 | 1.41 | 158.2 |
A:B | 8:2 | 1.24 | 177.4 |
A:B | 5:3 | 1.56 | 151.5 |
A:B | 6:3 | 1.57 | 148.0 |
A:B | 7:3 | 1.51 | 151.8 |
A:B | 8:3 | 1.58 | 143.5 |
A:B | 1:10 | 3.83 | 78.4 |
测定结果表明,当烯丙苯噻唑和异菌脲的配比为5-8:2-3时,共毒系数(CTC)大于120,增效作用明显。
实施例2:制备实施例3所得的制剂用于防治秧苗稻瘟病的田间药效试验
(1)试验设计:将10%烯丙苯噻唑·异菌脲(8:2)颗粒剂作为试验组1#,施用量为0.1公斤/m2;以8%烯丙苯噻唑颗粒剂为对照组1#,施用量为0.15公斤/m2;以10%异菌脲颗粒剂为对照组2#,施用量为0.2公斤/m2,设置1个空白对照组。
(2)施药方法
在平整育秧畦上放好育秧盘,在秧盘按每孔放入2颗已经催好的牙谷种,在弄好秧盘之后按对应处理的药剂及药量施用,将已经催好芽的谷种栽入土壤中,试验中每个处理3次重复,以4个秧盘作为1个小区面积,按试验设计将试验组1#、对照组1#、对照组2#的对应药剂按规定的用量均匀施于对应的小区上,各小区中保持苗床环境一致。
(3)试验结果
药后10天,结合秧苗稻瘟病高发期结果调查,计算发病率及防治效果,结果表明,试验组1#对秧稻瘟病的防治效果为85.43%,对照组1#对秧稻瘟病的防治效果为72.24%;对照组2#对秧稻瘟病的防治效果为70.57%。从试验中看出,烯丙苯噻唑与异菌脲合理混配后,混配剂对秧稻瘟病增效明显,既减少有效成分的使用量,又表现出优于单剂的田间效果,有助于减少农药使用成本。
Claims (4)
1.一种含烯丙苯噻唑和异菌脲的农药颗粒剂,其特征在于,烯丙苯噻唑和异菌脲的重量比为:5-8:2-3。
2.根据权利要求1所述的含烯丙苯噻唑和异菌脲的农药颗粒剂,其特征在于,烯丙苯噻唑和异菌脲的重量比为8:2。
3.根据权利要求1或2所述的含烯丙苯噻唑和异菌脲的农药颗粒剂,其特征在于,烯丙苯噻唑的重量百分比为5-8%,异菌脲的重量百分比为2-3%。
4.权利要求3所述的含烯丙苯噻唑和异菌脲的农药颗粒剂用于防治旱育秧期的水稻稻瘟病的用途。
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