CN108935502B - 一种含丙嗪嘧磺隆、五氟磺草胺与灭草松的混合除草剂及其应用 - Google Patents
一种含丙嗪嘧磺隆、五氟磺草胺与灭草松的混合除草剂及其应用 Download PDFInfo
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Abstract
本发明提供一种含丙嗪嘧磺隆、五氟磺草胺与灭草松的混合除草剂及其应用；活性成分由丙嗪嘧磺隆、五氟磺草胺和灭草松组成，所述丙嗪嘧磺隆、五氟磺草胺和灭草松的重量比例为1‑40:1‑20:1‑100；可用于阔叶杂草、禾本科杂草和莎草的防治。
Description
技术领域
本发明属于农药领域，具体涉及一种含丙嗪嘧磺隆、五氟磺草胺与灭草松的混合除草剂及其应用。
背景技术
丙嗪嘧磺隆是由日本住友化学开发的嘧啶基磺酰脲类除草剂，虽然和其他磺酰脲类除草剂的作用机制相同，为乙酰乳酸合成酶(ALS)抑制剂，但它对抗磺酰脲类除草剂的杂草有很好的防效，主要用于水稻田防除禾本科及阔叶杂草。该产品用量低，对某些已知磺酰脲类除草剂产生抗性的杂草有很好的防效。五氟磺草胺属三唑并嘧啶磺酰胺类除草剂，可有效防除稗草、千金子以及一年生莎草科杂草，并对众多阔叶杂草有效，如沼生异蕊花、鲤肠、田菁、竹节花、鸭舌草等。灭草松是触杀型具选择性的苗后除草剂，可用于水稻、小麦、大豆、玉米、豌豆等多种作物田中防除阔叶杂草及莎草科杂草。
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。专利文献(CN103271065A)公开了有效成分为丙嗪嘧磺隆和灭草松的除草组合物；专利文献(CN106172457A)公开了丙嗪嘧磺隆和五氟磺草胺的除草组合物；专利文献(CN105519549A)公开了五氟磺草胺和灭草松的除草组合物。现有技术中并没丙嗪嘧磺隆、五氟磺草胺与灭草松复配三元除草组合物。
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、阔叶杂草、莎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
一种含丙嗪嘧磺隆、五氟磺草胺与灭草松的混合除草剂，活性成分由丙嗪嘧磺隆、五氟磺草胺和灭草松组成，所述丙嗪嘧磺隆、五氟磺草胺和灭草松的重量比例为1-40:1-20:1-100。
本发明所述的混合除草剂，所述丙嗪嘧磺隆、五氟磺草胺和灭草松的重量比例为1-10:1-5:20-100。优选的所述丙嗪嘧磺隆、五氟磺草胺和灭草松的重量比例为5:1:100。
本发明所述的混合除草剂中所述丙嗪嘧磺隆、五氟磺草胺和灭草松在组合物中的总重量百分含量为1-95％。优选的所述丙嗪嘧磺隆、五氟磺草胺和灭草松在组合物中的总重量百分含量为25-65％。
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、可分散有悬浮剂、悬浮剂、颗粒剂、乳油、微乳剂、水乳剂、水分散粒剂等中的一种。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、阔叶杂草和莎草，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、异型莎草、水苋菜、眼子菜等。
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、鸭舌草、异型莎草、鸭舌草、水苋菜、眼子菜等。
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1：28％丙嗪嘧磺隆·五氟磺草胺·灭草松水乳剂
实施例2：35％丙嗪嘧磺隆·五氟磺草胺·灭草松悬浮剂
实施例3：60％丙嗪嘧磺隆·五氟磺草胺·灭草松可湿性粉剂
实施例4：53％丙嗪嘧磺隆·五氟磺草胺·灭草松水分散粒剂
生物测试一：丙嗪嘧磺隆、五氟磺草胺与灭草松对稗草室内毒力测定。
试验方法：选择生长一致的杂草稗草进行定植，并做茎叶处理，淋水待叶片干燥后进行茎叶喷雾处理。处理30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丙嗪嘧磺隆、五氟磺草胺和灭草松复配对稗草室内毒力测定
由上表可知，丙嗪嘧磺隆、五氟磺草胺和灭草松复配对稗草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：丙嗪嘧磺隆、五氟磺草胺和灭草松复配对水稻田杂草田间防效。
试验对象：稗草、千金子、鸭舌草、异型莎草、鸭舌草、水苋菜、眼子菜等。
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丙嗪嘧磺隆、五氟磺草胺和灭草松复配对水稻田杂草田间防效
由上表可知，与单剂相比，丙嗪嘧磺隆、五氟磺草胺和灭草松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，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 (6)
1.一种含丙嗪嘧磺隆、五氟磺草胺与灭草松的混合除草剂，其特征在于：活性成分由丙嗪嘧磺隆、五氟磺草胺和灭草松组成，所述丙嗪嘧磺隆、五氟磺草胺和灭草松的重量比例为1-10:1-5:20-100。
2.根据权利要求1所述的混合除草剂，其特征在于：所述丙嗪嘧磺隆、五氟磺草胺和灭草松的重量比例为5:1:100。
3.根据权利要求1-2任一项所述的混合除草剂，其特征在于：所述丙嗪嘧磺隆、五氟磺草胺和灭草松在组合物中的总重量百分含量为1-95％。
4.根据权利要求3所述的混合除草剂，其特征在于：所述丙嗪嘧磺隆、五氟磺草胺和灭草松在组合物中的总重量百分含量为25-65％。
5.根据权利要求3所述的混合除草剂，其特征在于：组合物剂型为可湿性粉剂、悬浮剂、颗粒剂、乳油、微乳剂、水乳剂、水分散粒剂中的一种。
6.根据权利要求1-5任一项所述的混合除草剂用于防除杂草的用途。
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