CN109221170A - 一种含有氟酮磺草胺和丙草胺的除草组合物 - Google Patents
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Abstract
本发明提供一种含有氟酮磺草胺和丙草胺的除草组合物，氟酮磺草胺和丙草胺的重量比为1:30‑30:1；可用于防治农作物杂草，特别是用于水稻田杂草的防治。
Description
技术领域
本发明属于农药技术领域，具体涉及一种含有氟酮磺草胺和丙草胺的除草组合物。
背景技术
氟酮磺草胺是由拜耳公司开发的磺酰苯胺类新型除草剂，为乙酰乳酸合成酶抑制剂，通过阻止缬氨酸、亮氨酸、异亮氨酸的生物合成，抑制细胞分裂和植物生长。以根系和幼芽吸收为主，兼具茎叶吸收除草活性。用药量为25～50g/hm2，芽前或芽后早期使用，用于防除水稻田禾本科杂草、莎草和阔叶杂草。
丙草胺是细胞分裂抑制剂，通过中下胚轴和胚芽鞘吸收药剂，干扰蛋白质合成，对杂草的光合作用和呼吸作用也有间接影响。可用于防除水稻田稗草、鸭叶草、异型莎草、母草、牛毛毡、慈藻、萤蔺等杂草，对多年生杂草防效较差。
在农药研究中，将不同品种的活性成分进行复配，是防治抗性杂草的很常见的办法。复配增效很好的配方，由于明显提高了实际防治效果，降低了农药的使用量，从而大大的延缓了抗药性的产生，是综合防治的重要手段。现有技术中没有氟酮磺草胺和丙草胺的复配报道。
发明内容
本发明的目的是提供一种含有氟酮磺草胺和丙草胺的除草组合物，该除草组合物可用于作物杂草的防治，可以有效降低活性成分的施用剂量，减少环境污染，同时减缓抗药性的产生。
本发明提供如下技术方案：
一种含有氟酮磺草胺和丙草胺的除草组合物，含有氟酮磺草胺和丙草胺，氟酮磺草胺和丙草胺的重量比为1:30-30:1。
本发明所述的除草组合物，氟酮磺草胺和丙草胺的重量比为1:15-1:5、10:1；特别优选氟酮磺草胺和丙草胺的重量比为1:15。
本发明所述的除草组合物可与辅料组合制备成农药上接受的制剂，氟酮磺草胺和丙草胺在制剂中的总重量占整个制剂质量的1％-85％；优选氟酮磺草胺和丙草胺在制剂中的总重量占整个制剂质量的15％-65％。
本发明所述除草组合物的剂型为乳油、微乳剂、悬浮剂、可湿性粉剂、水分散粒剂等等。
所述的辅料选自乳化剂、分散剂、湿润剂、粘结剂、抗冻剂、消泡剂、增稠剂、填料、溶剂等中的一种或多种。
本发明所述的除草组合物用于防治水稻作物杂草的用途。特别优选用于稗草、鸭舌草等杂草的防治，
与现有技术相比，本发明具有如下有益效果：
(1)与单剂相比，该组合物具有明显协同增效作用，克服和延缓了杂草抗药性，扩大除草谱，除草速度快，明显提高了防治效果；(2)减少防治用工、用药成本。
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。
实验一：氟酮磺草胺和丙草胺复配对稗草的室内毒力测定
试验方法：播种稗草种子30-40粒/盆，温室培养，待稗草长到1cm(针叶期)时，将过高或过矮的稗草去除，留取高度一致的稗草备用。根据预处理试验，每个处理设置6个倍比浓度梯度药剂，茎叶喷雾处理，以等量清水作为空白对照，每个处理重复4次。药后7天调查药效，以施药前后正常苗数变化比较计算杂草死亡率。然后求出各药剂的回归方程式和EC50。最后按孙云沛法计算共毒系数(CTC)。当CTC≤80，则组合物表现为拮抗作用，当80＜CTC＜120，则组合物表现为相加作用，当CTC≥120，则组合物表现为增效作用。
实测毒力指数(ATI)＝(标准药剂EC50/供试药剂EC50)×100；理论毒力指数(TTI)＝A药剂毒力指数×混剂中A的百分含量+B药剂毒力指数×混剂中B的百分含量；共毒系数(CTC)＝[混剂实测毒力指数(ATI)/混剂理论毒力指数(TTI)]×100。
表1氟酮磺草胺和丙草胺对稗草的室内毒力测定
由上表可知，氟酮磺草胺和丙草胺复配对稗草具有很好的防治效果，氟酮磺草胺和丙草胺复配在1:30、1:1-5:1、15：1-30:1的范围内对稗草表现加和作用。当氟酮磺草胺和丙草胺复配在1:15-1:5、10:1的范围内CTC值大于130，表现为显著增效作用；特别优选氟酮磺草胺和丙草胺的配比为1:15。
实施例1：32％氟酮磺草胺·丙草胺可湿性粉剂
氟酮磺草胺2g，丙草胺30g，木质素磺酸钠3g，十二烷基苯磺酸钠5g，聚羧酸盐10g，膨润土黑加至100g。
实施例2：22％氟酮磺草胺·丙草胺水悬浮剂
氟酮磺草胺2g，丙草胺20g，聚羧酸盐10g，基酚甲醛树酯聚氧乙烯醚5g，丙三醇3g，有机硅1g，羧甲基纤维素2g，白炭黑4g，水加至100g。
实施例3：60％氟酮磺草胺·丙草胺水分散粒剂
氟酮磺草胺10g，丙草胺50g，木质素磺酸钠8g，十二烷基苯磺酸钠6g，尿素2g，黄原胶3g，膨润土6g，高岭土加至100g。
试验二：氟酮磺草胺和丙草胺复配对水稻田杂草的田间防效
试验方法：试验田为水稻田，土壤肥力较好，有机质含量为2.9％。施药时水稻秧苗5-6叶期，杂草已萌发，施用方法为拌细土撒施，具体用量参见表2。药后30天进行田间调查，每小区调查4点，每点0.1m2，并称量杂草鲜重，计算杂草鲜重防效。
表2氟酮磺草胺和丙草胺复配对水稻田杂草的田间防效
由上表可知，与单独使用相比，氟酮磺草胺和丙草胺复配可以显著提高其对水稻田杂草的防治效果，具有显著的增效作用。可减缓抗性的产生，对作物安全性好，符合农药制剂的安全性要求。
上面结合实施例对本发明做了进一步的叙述，但本发明并不限于上述实施方式，在本领域的普通技术人员所具备的知识范围内，还可以在不脱离本发明宗旨的前提下做出各种变化。
Claims (8)
1.一种含有氟酮磺草胺和丙草胺的除草组合物，其特征在于:氟酮磺草胺和丙草胺的重量比为1:30-30:1。
2.根据权利1要求所述的除草组合物，其特征在于氟酮磺草胺和丙草胺的重量比为1:15-1:5、10:1。
3.根据权利1要求所述的除草组合物，其特征在于，氟酮磺草胺和丙草胺的重量比为1:15。
4.根据权利要求1-3中任一项所述的除草组合物，其特征在于：可制备成农药上接受的制剂，氟酮磺草胺和丙草胺在制剂中的总重量占整个制剂质量的1％-85％。
5.根据权利要求4所述的除草组合物，其特征在于：氟酮磺草胺和丙草胺在制剂中的总重量占整个制剂质量的15％-65％。
6.根据权利要求1所述的除草组合物，其特征在于：该除草组合物的剂型为乳油、微乳剂、悬浮剂、可湿性粉剂、水分散粒剂等。
7.根据权利要求1-6中任一项所述的除草组合物用于防治农作物杂草的用途。
8.根据权利要求7所述的用途，其特征在于：所述的农作物杂草优选为水稻田杂草。
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186346A (zh) * | 2008-08-14 | 2011-09-14 | 拜尔农作物科学股份公司 | 包含被二甲氧基三嗪基取代的二氟甲磺酰苯胺的除草结合物 |
| WO2014033242A1 (en) * | 2012-08-31 | 2014-03-06 | Basf Se | Use of an agrochemical composition with herbicidal action in rice |
| CN106231904A (zh) * | 2014-04-23 | 2016-12-14 | 巴斯夫欧洲公司 | 包含嗪类的除草组合 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102186346A (zh) * | 2008-08-14 | 2011-09-14 | 拜尔农作物科学股份公司 | 包含被二甲氧基三嗪基取代的二氟甲磺酰苯胺的除草结合物 |
| WO2014033242A1 (en) * | 2012-08-31 | 2014-03-06 | Basf Se | Use of an agrochemical composition with herbicidal action in rice |
| CN106231904A (zh) * | 2014-04-23 | 2016-12-14 | 巴斯夫欧洲公司 | 包含嗪类的除草组合 |
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