CN108684672A - 一种含氰氟草酯、噁唑酰草胺与双氟磺草胺的混合除草剂及其应用 - Google Patents
一种含氰氟草酯、噁唑酰草胺与双氟磺草胺的混合除草剂及其应用 Download PDFInfo
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Abstract
本发明提供一种含氰氟草酯、噁唑酰草胺与双氟磺草胺的混合除草剂及其应用;活性成分由氰氟草酯、噁唑酰草胺和双氟磺草胺组成,所述氰氟草酯、噁唑酰草胺和双氟磺草胺的重量比例为1‑50:1‑50:0.1‑30;可用于杂草的防治。
Description
技术领域
本发明属于农药领域,具体涉及一种含氰氟草酯、噁唑酰草胺与双氟磺草胺的混合除草剂及其应用。
背景技术
氰氟草酯属内吸传导型抑制剂,是苗后处理剂,其作用特点是药剂经茎叶处理后,迅速被杂草叶片和叶鞘吸收,并传导到顶端以至整个植株,积累于植物体的分生组织区,抑制乙酰辅酶A羧化酶(ACC酶),使脂肪酸合成停止,细胞的生长***不能正常进行,膜***等含脂结构破坏,最后导致植物死亡。不仅对各种稗草高效,还可防除千金子、马唐、稗、狗尾草、牛筋草等禾本科杂草。
噁唑酰草胺能有效防除水稻田大多数一年生禾本科杂草,与大多数此类除草剂不同的是,噁唑酰草胺对水稻安全,可有效防除水稻田主要杂草,如稗草、千金子、马唐和牛筋草,主要用于移栽和直播稻田除草。
双氟磺草胺是***并嘧啶磺酰胺类超高效除草剂,双氟磺草胺是内吸传导型除草剂,可以传导至杂草全株,因而杀草彻底,不会复发。双氟磺草胺杀草谱广,可防除麦田大多数阔叶杂草,包括猪殃殃、麦家公等难防杂草,并对麦田中最难防除的泽漆有非常好的抑制作用。
除草剂之间的复配既能解决农药单剂毒性大、效果差的问题,又投入少、研发周期短,并且不同农药之间的交互使用能够延缓作用物抗药性的产生,具有较为理想的使用效果,因此不同作用机理之间农药的复配是目前农药领域的研究热点。现有技术中并没氰氟草酯、噁唑酰草胺与双氟磺草胺复配的相关报道。
发明内容
本发明的目的在于提供一种组分合理,用药成本低,不易产生抗药性的除草剂组合物,对水稻田、麦田禾本科和阔叶杂草具有较好的防治效果,对减缓杂草抗性、减少药物使用剂量等方面具有积极作用。
本发明提供以下技术方案
一种含氰氟草酯、噁唑酰草胺与双氟磺草胺的混合除草剂,活性成分由氰氟草酯、噁唑酰草胺和双氟磺草胺组成,所述氰氟草酯、噁唑酰草胺和双氟磺草胺的重量比例为1-50:1-50:0.1-30。
本发明所述的混合除草剂,所述氰氟草酯、噁唑酰草胺和双氟磺草胺的重量比例为1-30:1-30:0.1-20。优选的所述氰氟草酯、噁唑酰草胺和双氟磺草胺的重量比例为1-20:1-20:0.1-10。
本发明所述的混合除草剂中所述氰氟草酯、噁唑酰草胺和双氟磺草胺在组合物中的总重量百分含量为10-85%。优选的所述氰氟草酯、噁唑酰草胺和双氟磺草胺在组合物中的总重量百分含量为15-60%。
本发明组合物可与农业上可接受的助剂组合制备成适应剂型,优选剂型可湿性粉剂、乳油、悬浮剂、油悬浮剂、微乳剂、水乳剂、悬浮乳剂、水分散粒剂等。本发明所述的助剂包含乳化剂、分散剂、润湿剂、粘结剂、崩解剂、增稠剂、稳定剂、防冻剂、消泡剂填料等。均选自本领域常见辅料。
本发明所述的混合除草剂用于防除杂草的用途。优选用于水稻田、麦田禾本科和阔叶杂草,例如稗草、千金子、野燕麦、鸭舌草、猪殃殃、水芹、狗尾草、马齿苋、马唐。
本发明取得以下有益技术效果:
本发明所述的组合物将三种不同作用机理的活性成分组合使用,可有效降低杂草抗药性的产生,扩大杀草谱;可同时防除稗草、千金子、野燕麦、鸭舌草、猪殃殃、水芹、狗尾草、马齿苋、马唐。
本发明所述的除草组合物具有显著的增效作用,本发明所述的除草组合物田间防效相比于单剂、二元组合物的田间防效较高,可以有效减少活性成分的施用剂量,减少环境污染。
具体实施方式
下面结合实施例对本发明的具体实施方式进行详细描述,但应当理解本发明的保护范围并不受具体实施方式的限制。
实施例1:10.5%氰氟草酯·噁唑酰草胺·双氟磺草胺水乳剂
实施例2:32%氰氟草酯·噁唑酰草胺·双氟磺草胺悬浮剂
实施例3:32%氰氟草酯·噁唑酰草胺·双氟磺草胺可湿性粉剂
实施例4:25%氰氟草酯·噁唑酰草胺·双氟磺草胺水分散粒剂
生物测试一:氰氟草酯、噁唑酰草胺与双氟磺草胺对千金子室内毒力测定。
试验方法:将千金子种子均匀播撒于花盆内,保证每盆20-30粒种子,种子上覆盖1cm左右细土,至于温室培养,温室中温度保持在20-35℃,空气湿度50%以上,从花盆底部加水,保持土壤湿润。待生长一定时期,选择生长一致的杂草千金子进行定植,并做茎叶处理,淋水待叶片干燥后进行茎叶喷雾处理。处理21天后,测定鲜重,计算防效。
根据Colby法评价除草剂联合方式。评价标准:当E﹣E0>10%时,表示为增效作用;当﹣10%≤E﹣E0≤10%时,表现为相加作用;当E﹣E0<﹣10%时,表现为拮抗作用。
表1氰氟草酯、噁唑酰草胺和双氟磺草胺复配对千金子室内毒力测定
由上表可知,氰氟草酯、噁唑酰草胺和双氟磺草胺复配对千金子具有明显的增效作用,三种物质组合使用可以有效降低农药使用剂量。
生物测试二:氰氟草酯、噁唑酰草胺和双氟磺草胺复配对水稻田杂草田间防效。
试验对象:稗草、千金子、野燕麦、鸭舌草、猪殃殃、水芹、狗尾草、马齿苋、马唐等。
试验药剂:实施例1-4药剂以及对照药剂
试验方法:按照试验小区面积,称量好药剂,并兑水进行稀释,杂草处于2-3叶期,采用背负喷雾器进行茎叶喷雾1次,调查30天后鲜重防效,并比较各种药剂的除草活性。防效(%)=[(清水对照组杂草鲜重-处理组杂草鲜重)/清水组杂草鲜重]*100%。
表2氰氟草酯、噁唑酰草胺和双氟磺草胺复配对水稻田杂草田间防效
由上表可知,与单剂相比,氰氟草酯、噁唑酰草胺和双氟磺草胺复配施用可以扩大除草谱,并且可以显著提高其对杂草的防治效果,具有显著的增效作用。与二元复配相比,氰氟草酯、噁唑酰草胺和双氟磺草胺复配明显优于二元复配的防治效果,可有效减低农药的施用剂量,减少环境污染;并且田间观察对作物安全。
以上所述仅是本发明的优选实施方式,对于本领域技术人员来说,在不脱离本发明原料的前提下,可以做适当的改进,这些改进也在本发明的保护范围之内。
Claims (8)
1.一种含氰氟草酯、噁唑酰草胺与双氟磺草胺的混合除草剂,其特征在于:活性成分由氰氟草酯、噁唑酰草胺和双氟磺草胺组成,所述氰氟草酯、噁唑酰草胺和双氟磺草胺的重量比例为1-50:1-50:0.1-30。
2.根据权利要求1所述的混合除草剂,其特征在于:所述氰氟草酯、噁唑酰草胺和双氟磺草胺的重量比例为1-30:1-30:0.1-20。
3.根据权利要求2所述的混合除草剂,其特征在于:所述氰氟草酯、噁唑酰草胺和双氟磺草胺的重量比例为1-20:1-20:0.1-10。
4.根据权利要求1-3所述的混合除草剂,其特征在于:所述氰氟草酯、噁唑酰草胺和双氟磺草胺在组合物中的总重量百分含量为10-85%。
5.根据权利要求4所述的混合除草剂,其特征在于:所述氰氟草酯、噁唑酰草胺和双氟磺草胺在组合物中的总重量百分含量为15-60%。
6.根据权利要求1-5所述的混合除草剂,其特征在于:组合物剂型可为可湿性粉剂、乳油、悬浮剂、油悬浮剂、微乳剂、水乳剂、悬浮乳剂、水分散粒剂等中的一种。
7.根据权利要求1-6所述的混合除草剂用于防除杂草的用途。
8.根据权利要求7所述的用途,其特征在于:所述的杂草优选为稗草、千金子、野燕麦、鸭舌草、猪殃殃、水芹、狗尾草、马齿苋、马唐。
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