CN117882729A - 一种含环己烷-1,3-二酮衍生物的除草剂组合物及其应用 - Google Patents
一种含环己烷-1,3-二酮衍生物的除草剂组合物及其应用 Download PDFInfo
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- CN117882729A CN117882729A CN202410042927.5A CN202410042927A CN117882729A CN 117882729 A CN117882729 A CN 117882729A CN 202410042927 A CN202410042927 A CN 202410042927A CN 117882729 A CN117882729 A CN 117882729A
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Abstract
本发明涉及农药领域,具体涉及一种农药组合物及其应用。本发明的除草组合物含有式(I)所示环己烷‑1,3‑二酮衍生物。本发明的农药组合物具有良好防除农田杂草的效果,可以减少用药量,降低施药成本,减轻农药残留对环境的污染。其中R1和R2的定义如说明书中定义。
Description
本申请是2022年11月21日提交的,发明名称为“一种含环己烷-1,3-二酮衍生物的除草剂组合物及其应用”的中国专利申请202211455942.X的分案申请。
技术领域
本发明涉及农药领域,具体讲,涉及一种含环己烷-1,3-二酮衍生物的除草剂组合物及其应用。
背景技术
对于许多高活性的除草剂而言,它们与有用植物,尤其是双子叶农作物,例如,棉花、油菜,以及禾本科植物,例如,大麦、小米、玉米、稻、小麦等相容性并不是很好。已知的不同特效除草剂的特殊组合可以从协同增效意义上提高除草剂活性成份的活性。以此方式可以降低控制有害植物所要求的除草活性化合物的施用率。
此外,在某些情况下特效除草剂与活性化合物中的一些也具有除草活性,联合施用允许实现更好的农作物相容性。这些情况下,活性化合物起解毒剂或拮抗剂的作用并且也称为安全剂。
环己烷-1,3-二酮类除草剂是除草剂中非常重要的一类,此类除草剂最早开发于20世纪60年代,通过抑制乙酰辅酶A羧化酶(ACCase),破坏脂肪酸的生物合成,来除掉杂草。此类除草剂是一种高效安全、高选择性的ACCase抑制剂,仅对于大多数一年生和多年生的禾本科杂草有特效,对双子叶作物安全,为此,本企业和很多机构一直致力于此类除草剂的研发。
申请人在CN111205208A中披露了一种式(I)所示的环己烷-1,3-二酮类化合物,其结构式为:
,其中,R1为-CH3、-CH2CH3、-(CH2)2CH3、-CH(CH3)2、-(CH2)3CH3、-CH(CH3)C2H5、-CH2CH(CH3)2或-C(CH3)3;基团R2为顺反-CHCH=CHCl、-CHCCl=CH2或且/>中的取代基X选自-Cl、-F、-NO2或-CF3,n为取代基X的个数,为1、2或3。
申请人研究发现上述化合物具有优异的除草活性,并且对相关植物具有较好的安全性。但是长期使用单一的除草剂容易产生抗性。申请人在研究过程中发现上述化合物与相关除草剂的组合表现出了较好的除草效果。
发明内容
本发明的目的是提供一种对不想要的有害植物高度有效的除草组合物,本发明组合物具有较为广谱的除草活性。该目的和其他目的由下面的除草组合物实现。
本发明的除草组合物含有式(I)所示的环己烷-1,3-二酮衍生物,具体的提供一种除草组合物,所述除草组合物包含A)至少一种式(I)化合物:其中,
R1为-CH3、-CH2CH3、-(CH2)2CH3、-CH(CH3)2、-(CH2)3CH3、-CH(CH3)C2H5、-CH2CH(CH3)2或-C(CH3)3;基团R2为顺反-CHCH=CHCl、-CHCCl=CH2或且/>中的取代基X选自-Cl、-F、-NO2或-CF3,n为取代基X的个数,为1、2或3;
和/或其可农用盐;
以及至少一种选自如下的其它除草剂活性化合物:
B)b1-b9)类除草剂
b1)磺酰脲类除草剂,所述磺酰脲类除草剂优选吡嘧磺隆、苄嘧磺隆、氯吡嘧磺隆、烟嘧磺隆、砜嘧磺隆、甲基二磺隆、酰嘧磺隆、氯嘧磺隆、甲嘧磺隆、氟胺磺隆和啶嘧磺隆种一种或多种;
b2)酰胺类除草剂,所述酰胺类除草剂优选甲草胺、乙草胺、异丙甲草胺、丙草胺、丁草胺、乙氧苯草胺、吡氟酰草胺、二甲噻草胺、稗草胺、异噁草胺、氟吡草胺、溴丁酰草胺、双苯酰草胺和敌稗一种或多种;
b3)芳氧苯氧丙酸类除草剂,所述芳氧苯氧丙酸类除草剂优选氰氟草酯、精喹禾灵、噁唑酰草胺、精噁唑禾草灵和喔草酯种一种或多种;
b4)环己烯酮/三酮类除草剂,所述环己烯酮/三酮类除草剂优选三甲苯草酮、烯禾啶、吡喃草酮、噻草酮、苯草酮、环苯草酮、烯草酮、丁苯草酮、禾草灭、磺草酮、硝磺草酮、环磺酮和双环磺酮中一种或多种;
b5)三唑并嘧啶类除草剂,所述三唑并嘧啶类除草剂优选双氟磺草胺、甲氧磺草胺、唑嘧磺草胺、氯酯磺草胺、磺草唑胺、五氟磺草胺中一种或多种;
b6)嘧啶水杨酸类除草剂,所述嘧啶水杨酸类除草剂优选嘧草硫醚、嘧草醚、环酯草醚、双草醚和嘧啶肟草醚中一种或多种;
b7)羧酸类除草剂,所述羧酸类除草剂优选2.4-D、2-甲-4-氯、2,4,5-T、2-甲-4-氯丙酸、2.4-D异辛酯、2,4,-D丁酯、麦草畏、豆科威、敌草索和毒莠定中一种或多种;
b8)二苯醚类除草剂,所述二苯醚类除草剂优选氟磺胺草醚、乙羧氟草醚、乙氧氟草醚、乳氟禾草灵、氟草醚酯和氟酯肟草醚中一种或多种;
b9)三氮苯类除草剂,所述三氮苯类除草剂优选特丁净、异丙净、氟草净、甘草津、莠灭净、西玛津、扑草净、莠去津、西草净和三嗪氟草胺一种或多种。
本发明还提供一种控制不希望的植物生长的方法,包括施用本发明除草组合物作用用植物、其生长的环境或其种子上。
本发明的有益效果
包含式(I)化合物和至少一种除草剂B的本发明组合物比基于对单独化合物观察到的除草活性所预期的要具有更好的除草活性,即对有害植物具有更好的活性和更广谱的活性。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。另外,为了更好的说明本发明,在下文的具体实施方式中给出了众多的具体细节。本领域技术人员应当理解,没有某些具体细节,本发明同样可以实施。在一些实施例中,对于本领域技术人员熟知的原料、辅料、方法、手段等未作详细描述,以便于凸显本发明的主旨。
除非另有其它明确表示,否则在整个说明书和权利要求书中,术语“包括”或其变换如“包含”或“包括有”等等将被理解为包括所陈述的活性成份,而并未排除其它可能存在的活性成份。
本发明中“控制”和“防除”是同义词。
本发明中“不希望的植物生长”和“有害植物”是同义词。
本发明式(I)化合物、除草剂B和/或安全剂C能够形成几何异构体,例如E/Z异构体,则可以在本发明组合物中使用纯异构体以及其二者的混合物。
本发明中所述式(I)化合物、除草化合物B和/或安全剂C具有一个或多个手性中心且因此作为对映体或非对映体存在,则可以在本发明组合物中使用纯对映体和非对映体及其混合物。
本文所述式(I)化合物、除草化合物B和/或安全剂C具有可离子化官能基团,则它们还可以以其可农用盐形式使用。合适的通常是其阳离子和阴离子分别对活性化合物的活性没有不利影响的那些阳离子的盐和那些酸的酸加成盐。
优选的阳离子是碱金属的离子,优选锂、钠和钾离子,碱土金属的离子,优选钙和镁离子,以及过渡金属的离子,优选锰、铜、锌和铁离子,此外还有铵和其中1-4个氢原子被C1-C4烷基、羟基-C1-C4烷基、C1-C4烷氧基-C1-C4烷基、羟基-C1-C4烷氧基-C1-C4烷基、苯基或苄基替代的取代铵,优选铵、甲基铵、异丙基铵、二甲基铵、二异丙基铵、三甲基铵、庚基铵、十二烷基铵、十四烷基铵、四甲基铵、四乙基铵、四丁基铵、2-羟基乙基铵(醇胺盐)、2-(2-羟基乙-1-氧基)乙-1-基铵(二甘醇胺盐)、二(2-羟基乙-1-基)铵(二醇胺盐)、三(2-羟基乙基)铵(三醇胺盐)、三(2-羟基丙基)铵、苄基三甲基铵、苄基三乙基铵、N,N,N-三甲基乙醇铵(胆碱盐),此外还有鏻离子,锍离子,优选三(C1-C4烷基)锍,如三甲基锍,以及氧化锍离子,优选三(C1-C4烷基)氧化锍,最后还有多元胺如N,N-二(3-氨基丙基)甲基胺和二亚乙基三胺的盐。
有用酸加成盐的阴离子主要是氯离子、溴离子、氟离子、碘离子、硫酸氢根、甲基硫酸根、硫酸根、磷酸二氢根、磷酸氢根、硝酸根、碳酸氢根、碳酸根、六氟硅酸根、六氟磷酸根、苯甲酸根以及还有C1-C4链烷酸的阴离子,优选甲酸根、乙酸根、丙酸根和丁酸根。
在本文中所披露的范围的端点和任何值都不限于该精确的范围或值,这些范围或值应当理解为包含接近这些范围或值的值。对于数值范围来说,各个范围的端点值之间、各个范围的端点值和单独的点值之间,以及单独的点值之间可以彼此组合而得到一个或多个新的数值范围,这些数值范围应被视为在本文中具体公开。
本发明的其他实施方案由权利要求书、说明书和实施例明了。应理解的是本发明主题的上面提到且下文仍要说明的特征在不背离本发明范围下不仅可以以在每种特定情况下给出的组合使用,而且可以以其他组合使用。
本发明一方面提供了一种除草组合物,所述除草组合物包含A)一种式(I)化合物:其中,R1为-CH3、-CH2CH3、-(CH2)2CH3、-CH(CH3)2、-(CH2)3CH3、-CH(CH3)C2H5、-CH2CH(CH3)2或-C(CH3)3;基团R2为顺反-CHCH=CHCl、-CHCCl=CH2或且/>中的取代基X选自-Cl、-F、-NO2或-CF3,n为取代基X的个数,为1、2或3;
和/或其的可农用盐;
以及至少一种选自如下的其它除草活性化合物:
B)b1-b9)类除草剂
b1)磺酰脲类除草剂,所述磺酰脲类除草剂优选吡嘧磺隆、苄嘧磺隆、氯吡嘧磺隆、烟嘧磺隆、砜嘧磺隆、甲基二磺隆、酰嘧磺隆、氯嘧磺隆、甲嘧磺隆、氟胺磺隆和啶嘧磺隆中一种或多种;
b2)酰胺类除草剂,所述酰胺类除草剂优选甲草胺、乙草胺、异丙甲草胺、丙草胺、丁草胺、乙氧苯草胺、吡氟酰草胺、二甲噻草胺、稗草胺、异噁草胺、氟吡草胺、溴丁酰草胺、双苯酰草胺和敌稗中一种或多种;
b3)芳氧苯氧丙酸类除草剂,所述芳氧苯氧丙酸类除草剂优选氰氟草酯、精喹禾灵、噁唑酰草胺、精噁唑禾草灵和喔草酯中一种或多种;
b4)环己烯酮/三酮类除草剂,所述环己烯酮/三酮类除草剂优选三甲苯草酮、烯禾啶、吡喃草酮、噻草酮、苯草酮、环苯草酮、烯草酮、丁苯草酮、禾草灭、磺草酮、硝磺草酮、环磺酮和双环磺酮中一种或多种;
b5)三唑并嘧啶类除草剂,所述三唑并嘧啶类除草剂优选双氟磺草胺、甲氧磺草胺、唑嘧磺草胺、氯酯磺草胺、磺草唑胺和五氟磺草胺中一种或多种;
b6)嘧啶水杨酸类除草剂,所述嘧啶水杨酸类除草剂优选嘧草硫醚、嘧草醚、环酯草醚、双草醚和嘧啶肟草醚中一种或多种;
b7)羧酸类除草剂,所述羧酸类除草剂优选2.4-D、2-甲-4-氯、2,4,5-T、2-甲-4-氯丙酸、2.4-D异辛酯、2,4,-D丁酯、麦草畏、豆科威、敌草索和毒莠定中一种或多种;
b8)二苯醚类除草剂,所述二苯醚类除草剂优选氟磺胺草醚、乙羧氟草醚、乙氧氟草醚、乳氟禾草灵、氟草醚酯和氟酯肟草醚中一种或多种;
b9)三氮苯类除草剂,所述三氮苯类除草剂优选特丁净、异丙净、氟草净、甘草津、莠灭净、西玛津、扑草净、莠去津、西草净和三嗪氟草胺一种或多种。
一些实施方案中,优选地,式(I)中R1为-CH3、-CH2CH3、-(CH2)2CH3;
一些实施方案中,优选地,式(I)中R2为顺反-CHCH=CHCl、-CHCCl=CH2或其中,X选自-Cl、-F、-NO2,n为1或2。
优选的实施方案中,式(I)化合物选自下列化合物:
化合物1:2-{1-[2-(4-氯-苯氧基)-丙氧基亚氨基]-丙基}-5-(2-乙硫基-丙基)-3-羟基-环己-2-烯酮,结构式为:
化合物2:2-{1-[2-(4-氯-苯氧基)-3-甲基-丁氧基亚氨基]-丙基}-5-(2-乙硫基-丙基)-3-羟基-环己-2-烯酮,结构式为:
化合物3:2-{1-[2-(3-氯-烯丙氧基)-丙氧基亚氨基]-丙基}-5-(2-乙硫基-丙基)-3-羟基-环己-2-烯酮,结构式为:
化合物4:2-{1-[2-(4-硝基-苯氧基)-丙氧基亚氨基]-丙基}-5-(2-乙硫基-丙基)-3-羟基-环己-2-烯酮,结构式为:
化合物5:2-{1-[2-(3,5-二氟-苯氧基)-丙氧基亚氨基]-丙基}-5-(2-乙硫基-丙基)-3-羟基-环己-2-烯酮,结构式为:
优选的实施方案中,优选地,组合物中除草剂B选自烟嘧磺隆、吡氟酰草胺、烯草酮、双草醚、2,4-滴异辛酯、莠去津、五氟磺草胺、噁唑酰草胺和氰氟草酯中一种。
其中,组合物中A和B重量比为1:1000-1000:1,优选,1:100-50:1,更优选1:50-30:1。
一些实施方案中,进一步地,上述组合物中额外包含安全剂作为C组分。
优选地,安全剂C组分选自萘二甲酸酐、二氯丙烯胺、苯叉酰胺、呋喃解草唑、解草酮、解草烷、解草胺腈、解草腈、肟草胺、解草安、解草啶、解草唑、吡唑解草酯、双苯噁唑酸、解毒喹、环丙磺酰胺中一种。
优选地实施方案中,本发明提供一种含2-{1-[2-(4-氯-苯氧基)-丙氧基亚氨基]-丙基}-5-(2-乙硫基-丙基)-3-羟基-环己-2-烯酮(化合物1)和除草剂B的组合物,其中,所述除草剂B选自噁唑酰草胺、烟嘧磺隆、氰氟草酯、2,4-滴异辛酯,其中化合物1和B的重量比为1:50-50:1,优选1:40-40:1。
优选地实施方案中,上述组合物中B为噁唑酰草胺,化合物1和噁唑酰草胺的重量比为1:40-40:1,优选,1:40、1:30、1:10、1:5、1:2、1:1、12:1、40:1。
优选地实施方案中,上述组合物中B为烟嘧磺隆,化合物1和烟嘧磺隆的重量比为1:24-7:1,优选,1:24、1:6、1:1、2:1、7:1。
优选地实施方案中,上述组合物中B为氰氟草酯,化合物1和氰氟草酯的重量比为1:30-20:1,优选,1:30、1:15、1:1、3:1、6:1、10:1和20:1。
优选地实施方案中,上述组合物中B为2,4-滴异辛酯,化合物1和2,4-滴异辛酯的重量比1:40-1:5,优选1:40、1:10、1:5。
优选地实施方案,本发明提供一种含2-{1-[2-(4-氯-苯氧基)-3-甲基-丁氧基亚氨基]-丙基}-5-(2-乙硫基-丙基)-3-羟基-环己-2-烯酮(化合物2)和除草剂B的组合物,其中,所述除草剂选自五氟磺草胺、莠去津。其中化合物2和除草剂B的重量比为1:100-15:1。
优选地实施方案中,上述组合物中B为五氟磺草胺,化合物2和五氟磺草胺的重量比为1:20-15:1,优选,1:20、1:10、1:5、1:1、2:1、5:1和15:1。
优选地实施方案中,上述组合物中B为莠去津,化合物2和莠去津的重量比为1:100-1:3,优选,1:100、1:60、1:30、1:6、1:3。
优选地实施方案,本发明提供一种含2-{1-[2-(3-氯-烯丙氧基)-丙氧基亚氨基]-丙基}-5-(2-乙硫基-丙基)-3-羟基-环己-2-烯酮(化合物3)和吡氟酰草胺的组合物,所述化合物3和吡氟酰草胺的重量比为1:50-50:1,优选,1:50、1:25、2:5、1:1、2:1、4:1、10:1、50:1。
优选地实施方案,本发明提供一种含2-{1-[2-(4-硝基-苯氧基)-丙氧基亚氨基]-丙基}-5-(2-乙硫基-丙基)-3-羟基-环己-2-烯酮(化合物4)和烯草酮的组合物,所述化合物4和烯草酮的重量比为1:40-40:1,优选1:40、1:10、1:2、1:1、2:1、3:1、4:1、20:1和40:1。
优选地实施方案中,本发明提供一种含2-{1-[2-(3,5-二氟-苯氧基)-丙氧基亚氨基]-丙基}-5-(2-乙硫基-丙基)-3-羟基-环己-2-烯酮(化合物5)和双草醚的组合物,所述化合物5和双草醚的重量比为1:1-12:1,优选1:1、2:1、4:1、6:1和12:1。
本发明还提供一种除草组合物,包括上述所述的组合物和农药上合适的助剂。
优选地,上述除草组合物中,活性成分的含量为1~95重量%;优选为1~80重量%;更优选为10~55%,更优选为30~50%,在该优选范围内活性成分能够快速从农药组合物中释放出来并发挥作用,进一步提高对田间杂草的防治。
本发明实施例中的辅助成分的类型可以在较宽的范围内选择,例如,辅助成分可以包括水、乳化剂、润湿剂、分散剂、增稠剂、防冻剂、消泡剂、粘结剂、崩解剂、有机溶剂、固体惰性载体/填料、稳定剂中的一种或多种,多种具体可以为两种、三种、四种或五种。
对于上述各类型的辅助成分,其具体辅料种类可以在较宽的范围内选择。
有机溶剂选自苯、甲苯、二甲苯、萘、石脑油、重质苯、甲醇、乙醇、环己酮、丙酮、植物油、二氯甲烷、三氯甲烷、乙腈、甲酚、乙二醇、正丁醇、山梨醇、二甲基甲酰胺、乙酸乙酯、油酸甲酯中的一种或多种;
乳化剂选自辛基酚聚氧乙烯(聚氧丙烯)醚、壬基酚聚氧乙烯醚、苄基酚聚氧乙烯醚、苯乙基酚聚氧乙烯醚、脂肪醇聚氧乙烯醚、脂肪酸聚氧乙烯酯、脂肪胺聚氧乙烯醚、多元醇脂肪酸酯、烷基苯磺酸盐、烷基磺酸盐、农乳系列和吐温系列。例如:十二烷基苯磺酸钙、苯乙烯基酚聚氧乙烯醚磷酸酯、苄基酚聚氧乙烯醚磷酸酯、失水山梨醇三油酸酯、甘油单硬脂酸酯、失水山梨醇单月桂酸酯、聚氧乙烯山梨醇酐单月桂酸酯、聚氧乙烯单棕榈酸酯、失水山梨醇聚氧乙烯醚、聚氧乙烯失水山梨醇醚单油酸酯和蓖麻油聚氧乙烯醚中的一种或多种;
分散剂选自烷基萘磺酸盐、萘磺酸盐甲醛缩合物、芳烷基萘磺酸甲醛缩合物、萘酚磺酸甲酸缩合物、烷基苯磺酸盐、烷基磷酸酯、烷基酚聚氧乙烯醚、木质素磺酸盐、脂肪酸聚氧乙烯酯、脂肪胺聚氧乙烯醚、植物油环氧乙烷加成物、环氧乙烷-环氧丙烷嵌段共聚物、乙二胺聚氧乙烯聚氧丙烯醚中的一种或几种;
润湿剂/渗透剂主要包括脂肪醇硫酸盐、烷基苯磺酸盐、α-烯烃磺酸盐、二烷基丁二酸酯磺酸盐、脂肪酰胺N-甲基牛磺酸钠盐、烷基萘磺酸钠等中的一种或几种;
增稠剂选自淀粉、黄原胶、琼脂、甲基纤维素、羟丙基甲基纤维素、有机膨润土、硅藻土、聚乙烯醇、硅酸铝镁、粘土和白炭黑中的一种或多种;
有机悬浮介质选自大豆油、菜籽油、玉米油、葵花油、棉籽油、棕榈油、花生油、蓖麻油和它们的酯交换产物中的一种或多种;
防冻剂选自乙二醇、丙二醇、甘油、尿素、聚乙二醇和氯化钠中的一种或多种;
消泡剂选自聚醚消泡剂和/或有机硅消泡剂;
粘结剂选自蔗糖、麦芽糖、糊精和淀粉中的一种或多种;
崩解剂选自玉米淀粉、葡萄糖、羟丙基淀粉、羧丙基纤维素和尿素中的一种或多种;
固体惰性载体/填料可以包括硅藻土、凹凸棒土、膨润土、海泡石、高岭土、陶土、白炭黑、滑石粉和轻钙中的一种或多种;
防腐剂选自苯甲酸、山梨酸、对羟苯甲酸、对苯二酚等中的一种或几种;
安全剂选自萘二甲酸酐、二氯丙烯胺、苯叉酰胺、呋喃解草唑、解草酮、解草烷、解草胺腈、解草腈、肟草胺、解草安、解草啶、解草唑、吡唑解草酯、双苯噁唑酸、解毒喹、环丙磺酰胺中一种。
本发明除草组合物可以制成多种剂型,例如,可以为悬浮剂、微囊悬浮剂、乳油、油悬浮剂、微乳剂、水乳剂、水剂、可湿性粉剂、片剂可溶性粉剂、和水分散粒剂中的一种。可以采用本领域公知的制备方法制备上述各种剂型,在此不再赘述。
具体,可以依据剂型的不同,选用不同的辅助成分。
本发明除草组合物可以以成品形式提供,即组合物中各成分已经混合;也可以以每种成分单独制剂的形式提供,在临用前混合均匀即可。
本发明实施例的第二方面提供上述除草组合物在防治杂草中的应用。
优选情况下,所述杂草为禾本科杂草、阔叶杂草中的一种或两种以上。
更优选地,所述杂草为稗草、千金子、狗尾草、马唐、繁缕、野燕麦、牛筋草、看麦娘、小蓟。
本发明还提供一种控制不希望的植物生长的方法,包括施用本发明的除草组合物作用于植物、其生长的环境或其种子上。
以下对本发明的具体实施方式进行详细说明。应当理解的是,此处所描述的具体实施方式仅用于说明和解释本发明,并不用于限制本发明。本发明实施例中百分含量在没有特别说明的情况下是指重量百分含量。本发明涉及的式(I)化合物由本公司实验室制备,具体制备方法参考CN111205208A,其余提及的化合物和助剂多可以由市场购买获得。
制剂实施例
实施例1 30%化合物1·噁唑酰草胺乳油
按重量百分比计,各组分配比为15%化合物1、15%噁唑酰草胺、6%农乳0204、3%乙醇、用石脑油补足余量。
准备计量好各组分,然后将大部分的石脑油溶剂加入调制釜中,打开搅拌,设置搅拌速度60~80r/min,依次加入化合物1、噁唑酰草胺、农乳0204和乙醇,然后加入剩余的石脑油溶剂,搅拌1.5h后即制得乳油。
实施例2 11%化合物2·五氟磺草胺可分散油悬浮剂
按重量百分比计,各组分配比为8%化合物2、3%五氟磺草胺、8%浓乳1600、2%膨润土,用油酸甲酯补足余量。
准备计量好的各组分,然后将活性成分、膨润土、部分农乳1600和部分油酸甲酯依次加入砂磨机中,2h后停止砂磨,输送至混合器中,加入剩余的乳化剂和油酸甲酯,混合均匀。
实施例3 75%化合物3·吡氟酰草胺水分散粒剂
按重量百分比计,各组分配比为50%化合物3、25%吡氟酰草胺、2%陶土、5%十二烷基磺酸钠、3%木质素磺酸钠、1%尿素、淀粉补足余量。
准备计量好的各组分,将活性成分、十二烷基磺酸钠、木质素磺酸钠、陶土加入到水中研磨,加入尿素和淀粉后输送至喷雾干燥塔进行喷雾造粒。
实施例4 6%化合物4·烯草酮水乳剂
按重量百分比计,各组分配比为3%化物4、3%烯草酮、10%二甲苯、8%浓乳500、2%乙醇、3%乙二醇,用水补足余量。
准备计量好的各组分,将活性成分、二甲苯、乙醇、农乳500混合均匀,然后加入乙二醇和水,在高速搅拌下形成水乳剂。
生物测定
测定方法参照NY1155.4-2006农药室内生物测定试验准则.除草剂.第4部分活性测定试验.茎叶喷雾法进行,具体方法如下说述。
供试药剂
活性成分A环己烷-1,3-二酮衍生物由本公司生产,活性成分B烟嘧磺隆、吡氟酰草胺、烯草酮、双草醚、2,4-滴异辛酯、莠去津、五氟磺草胺、噁唑酰草胺和氰氟草酯由市场购买,称取一定量的活性成分,用丙酮做溶剂溶解,用0.1%的吐温80水溶液进行稀释使用,活性成分具体使用量及配比见表1-9。
供试杂草培养
实验土壤:有机质含量2.5%,pH=6.8,盆钵:直径30cm,高度18cm的盆钵,播种:将土壤装至盆钵的4/5处,采用盆钵底部渗灌的方式使土壤完全湿润,取25-30粒杂草种子均匀播撒于土壤表面,覆土1.0cm,在温室内培养,培养温度:18~25℃;浇水方式:水田杂草稗草以盆钵顶部灌溉方式补水至饱和状态,旱田杂草千金子、狗尾草、马唐、繁缕、野燕麦、牛筋草、看麦娘、小蓟以盆钵底部渗灌方式补水;间苗:杂草出苗后进行间苗定株,每盆留10株杂草,均匀分布在盆钵中。
茎叶喷雾处理:
在杂草3-4叶期,在定量自动喷雾装置内(3WPSH-500E,南京农业机械化研究所),采用茎叶喷雾的方式处理杂草,喷液量按照450L/ha计;每处理设置4次重复,并设不含活性成分的处理作为空白对照。
调查方法:
处理后待杂草表面药液自然风干,移至温室常规培养,14天后目测供试测靶标的受害症状及生长抑制情况,并对供试靶标杂草地上部分鲜重进行称重,计算鲜重抑制率(%)。
鲜重抑制率(%)=(对照鲜重-处理鲜重)/对照鲜重×100。
联合作用评价方法:根据Gowing法评价除草剂联合作用方式,
其公式为:E0=X+Y×(100-X)/100,式中,
X为活性成分A用量为P时的鲜重抑制率;
Y为活性成分B用量为Q时的鲜重抑制率;
E0为除草剂A用量为P+除草剂B用量为Q时的理论防效;
E为除草剂A与除草剂B按上述比例混用后的实际防效。
评价标准:当E-E0>10%时表示为增效作用,当E-E0介于±10%为相加作用,当E-E0<-10%时表示为拮抗作用。
具体统计结果见下表1-9所示。
表1.化合物1和噁唑酰草胺对稗草、马唐、千金子的实际防效及联合作用评价(鲜重抑制率)
表2.化合物2和五氟磺草胺对稗草、千金子的实际防效及联合作用评价(鲜重抑制率)
表3.化合物1和烟嘧磺隆对稗草和马唐的实际防效及联合作用评价(鲜重抑制率)
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表4.化合物2和莠去津对马唐、稗草的实际防效及联合作用评价(鲜重抑制率)
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表5.化合物3和吡氟酰草胺对繁缕的实际防效及联合作用评价(鲜重抑制率)
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表6.化合物4和烯草酮对野燕麦、牛筋草的实际防效及联合作用评价(鲜重抑制率)
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表7.化合物5和双草醚对稗草、看麦娘的实际防效及联合作用评价(鲜重抑制率)
表8.化合物1和氰氟草酯对稗草、马唐、千金子和狗尾草的实际防效及联合作用评价(鲜重抑制率)
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表9.化合物1和2,4-滴异辛酯对小蓟、繁缕的实际防效及联合作用评价(鲜重抑制率)
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最后应说明的是:以上实施例仅用以说明本发明的技术方案,而非对其限制;本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。
Claims (7)
1.一种除草组合物,其特征在于,所述除草组合物包含化合物A和/或其可农用盐;以及至少一种选自如下的其它除草剂活性化合物B,所述的化合物A为2-{1-[2-(3-氯-烯丙氧基)-丙氧基亚氨基]-丙基}-5-(2-乙硫基-丙基)-3-羟基-环己-2-烯酮,所述的除草剂B为吡氟酰草胺,所述化合物A和吡氟酰草胺的重量比为1:50-50:1。
2.根据权利要求1所述除草组合物,其特征在于,额外包含安全剂作为C组分。
3.根据权利要求2所述的除草组合物,其特征在于,安全剂C组分选自萘二甲酸酐、二氯丙烯胺、苯叉酰胺、呋喃解草唑、解草酮、解草烷、解草胺腈、解草腈、肟草胺、解草安、解草啶、解草唑、吡唑解草酯、双苯噁唑酸、解毒喹和环丙磺酰胺中一种。
4.一种除草组合物,包括权利要求1-3任一项所述的组合物和农药上合适的助剂。
5.一种控制不希望的植物生长的方法,包括施用权利要求1-4任一项所述的除草组合物作用于植物、其生长的环境或其种子上。
6.根据权利要求1-4所述的除草组合物在防治杂草中的应用,其特征在于,所述的杂草为禾本科杂草、阔叶杂草中的一种或两种以上。
7.根据权利要求6所述的除草组合物在防治杂草中的应用,其特征在于,所述杂草为稗草、千金子、狗尾草、马唐、繁缕、野燕麦、牛筋草、看麦娘、小蓟中一种或多种。
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