CN1613314A - 嗪草酸与环己烯酮类的除草剂组合物 - Google Patents
嗪草酸与环己烯酮类的除草剂组合物 Download PDFInfo
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Abstract
嗪草酸与环己烯酮类的除草剂组合物，涉及农田除草剂，含有有效成分为嗪草酸A和除草剂B按重量比1∶0.1～200配制的混合物，其中除草剂B为拿捕净或烯草酮中的一种或两种，采用通用制剂方法制成含有有效成分重量百分比1～90％的粉剂、悬浮剂、乳油等农药。本发明配方配比合理，对单双子叶杂草的防效均高于其混用预期防效，具有明显的增效作用，同时也能保证农作物的产率，制剂方法简单，施用方便，降低成本，节省人力，降低了劳动强度。是目前国内外农田单双子叶杂草的理想除草剂。
Description
本发明为分案申请，原案发明创造名称为：含有嗪草酸的除草剂组合物，专利申请号：02144847.7，申请日：2002年11朋15日。
(一)技术领域
本发明涉及农田除草剂，尤其是用于防治农田单双子叶杂草的除草剂组合物。
(二)背景技术
嗪草酸(fluthiacet-methyl)，化学名：[[2-氯-4-氟-5-[(四氢-3-氧代-1H，3H-[1，3，4]噻二唑并[3，4，α]亚哒嗪-1-基)氨基]苯基]硫]乙酸甲酯，是一种阔叶杂草除草剂，该除草剂可用于玉米田、大豆田防治某些一年生阔叶杂草，其杀草谱有限，对禾本科杂草如稗草、狗尾草、马唐等的防治效果并不理想。此外，国内外专利还没有关于嗪草酸与其它特定化合物构成的除草剂组合物，因此它与其它化合物混合使用的效果是无法预料的。
(三)发明内容
本发明要解决的技术问题是，扩大除草剂的杀草谱，减少药剂用量，降低劳动强度，减轻药剂对作物的药害。
本发明的技术方案是：嗪草酸与环己烯酮类的除草剂组合物，含有有效成分为[[2-氯-4-氟-5-[(四氢-3-氧代-1H，3H-[1，3，4]噻二唑并[3，4，α]亚哒嗪-1-基)氨基]苯基]硫]乙酸甲酯A和除草剂B按重量比1∶0.1～200配制的混合物，其中除草剂B为2-[1-(2-乙氧基亚氨基)丁基]-5-[2-(乙硫基)丙基]3-羟基-2-环己烯-1-酮(通用名：拿捕净)或(RS)-2-[(E)-1-[(E)-3-氯烯丙氧基亚氨基]丙基]-5-[2-(乙硫基)丙基]-3-羟基环己-2-烯酮(通用名：烯草酮)中的一种或两种；有效成分重重比为A∶B＝1∶2～200。
当除草剂B为2-[1-(2-乙氧基亚氨基)丁基]-5-[2-(乙硫基)丙基]-3-羟基-2-环己烯-1-酮时，有效成分重量比优选A∶B＝1∶10～100；当除草剂B为(RS)-2-[(E)-1-[(E)-3-氯烯丙氧基亚氨基]丙基]-5-[2-(乙硫基)丙基]-3-羟基环己-2-烯酮时，有效成分重量比优选A∶B＝1∶5～20。
本发明所涉及除草剂组合物的最佳剂型是可湿性粉剂和悬浮剂，也可以是乳油、粉剂、颗粒剂、水剂、微乳剂、溶乳剂、干悬剂等剂型，其中有效成分重量百分含量为1～90％，采用常规制剂方法加工，不同剂型有效成分含量根据要求调整。
可湿性粉剂中含有有效成分的混合物、惰性载体和填料及一种或多种润湿剂和分散剂。通常含有总重量0.5～90％(优选5-80％)的有效成分混合物、0.25-25％(优选1-15％)的分散剂、5-95％(优选5-80％)的惰性固体载体及填料，由他们共同组成除草剂组合物，载体通常为矿物质惰性物质，如陶土、高岭土、膨润土、滑石粉、硅藻土等。
悬浮剂是将水溶性较差的有效成分混合物与乳化剂、分散剂、润湿剂等一起在水中不断搅拌，使之均匀分散和悬浮，以便喷雾使用。可根据需要适当加入增稠剂、防冻剂、消泡剂等。适宜的悬浮剂含有总重量0.1～90％(优选0.5～60％)的有效成分组合物，上限由有效成分在溶剂中的溶解限度来决定。
乳油是将除草剂组合物的有效成分混合物溶解在如丁醇、环己酮、二甲基甲酰胺、二甲苯或高沸点的芳香族或烃类中的某一种溶剂中，再添加一种或多种乳化剂制备而成。乳油中有效成分含量为总重量的0.1～90％，优选5～80％。
粉剂是将有效成分混合物与细颗类、呈分散状的固体物质如滑石粉、天然黏土和高岭土、皂土、叶蜡石或硅藻土经磨粉加工而成的。粉剂中有效成分为总重量的0.1～50％，优选2～40％。
颗类剂的制备是将有效成分混合物喷洒在具有吸附性能的颗类状惰性物质表面或将有效成分混合物用聚乙烯醇、聚丙烯酸钠等黏合剂或矿物油黏附到砂子、高岭土等载体物质表面或颗类状惰性物质表面，也可以用通常制造颗类肥料的方法将某些合适的有效成分加工成颗类剂。水中可分散的颗类剂其有效成分含量为总重量的1～90％，优选1～25％。
制剂可采用的表面活性剂有阴离子型表面活性剂和非离子型表面活性剂。包括硫酸盐类的脂肪醇硫酸盐、烷基醇聚氧乙烯基醚硫酸钠、烷基醇聚氧乙烯基醚硫酸钙，磺酸盐类的烷基磺酸钠、烷基苯磺酸盐、烷基萘磺酸盐、烷基丁二酸磺酸盐、单烷基苯基聚氧乙烯基醚丁二酸磺酸钠、脂肪醇环氧乙烷加成物磺酸盐、烷基酚甲醛缩合物环氧乙烷加成物磺酸盐、脂肪醇聚氧乙烯基醚、烷基酚聚氧乙烯基醚、失水山梨醇脂肪酸脂、失水山梨醇脂肪酸聚氧乙烯基醚、烷基酚甲醛缩合物聚氧乙烯基醚、磺化蓖麻醇盐、季铵盐衍生物、环氧乙烷与壬基或辛基苯酚的缩合物为主的产品或通过酯化不游离的羟基与环氧乙烷、硫酸脂及磺酸的碱金属及碱土金属盐，如磺酰琥珀酯二壬基(二辛基)钠，以及诸如木质素磺酸钠(钙)的高分子磺酸衍生物的碱和碱土金属盐缩合而成可溶性的无水山梨醇羧酸酯等。可以举例的有农乳2000号系列、石油磺酸钠、十二烷基磺酸钠、拉开粉、月桂醇聚氧乙烯基醚磺酸钠、吐温系列等。
本发明的除草剂组合物经长期、大量的优化实验选择合理的有效成分化合物混合，结合经济实用方面考虑，选择合理配方配比，制剂方法简单，施用方便，比较单一施用各有效成分除草剂，杂草防效高于每一化合物单独施用时的防效，降低成本，节省人力，降低了劳动强度。
本发明的除草剂组合物在除草效果及对农作物影响的实验数据见附表。由表中数据可知：本发明所提供的含有嗪草酸的除草剂组合物对于农田单双子叶杂草的实际防效均高于其混用预期防效，具有明显的增效作用，同时对农作物没有任何抑制作用，在保证除草的同时也能保证农作物的产率。具有明显的应用价值和社会效益，是目前国内外农田单双子叶杂草的理想除草剂。
杂草防效(％)计算如下：
杂草防效(％)＝(X-Y)/Y×100
X：未处理对照的杂草鲜重
Y：药剂处理后的杂草鲜重
联合作用的判别采用快速而实用的Colby法。设E为化合物间混用的预期杂草防效(％)，X、Y分别为化合物单用时杂草防效(％)。则：
两种化合物混用时：E＝X+Y-XY/100
当实测防效大于预期防效E时，说明产生了增效作用。
(四)具体实施方式
以下实施例主要是为了说明本发明，而非用来限制本发明。
实施例1
制备10.5％嗪草酸.拿捕净可湿性粉剂
依次称取85％的嗪草酸粉状原药10kg，16.5kg十二烷基苯磺酸钠、28kg木质素磺酸钠、1090kg高岭土投入混合槽中混合均匀时打开放料口，将料送进气流粉碎机中研磨加工通过0.44μ筛的粉，再送到螺旋搅拌混料器中，将85％拿捕净油状原药150kg滴进，开搅拌充分混合均匀，取样化验合格打开放料口，即为嗪草酸与拿捕净混合制剂的可湿性粉剂成品。
实施例2
按实施例1所述方法嗪草酸原药10kg，拿捕净原药200kg，其他成分同实施例1，制备得嗪草酸.拿捕净可湿性粉剂。
实施例3
制备嗪草酸.烯草酮粉剂
将嗪草酸粉状原药10kg、烯草酮原药70kg的有效成分组合剂和450kg作为惰性物质的滑石粉混合，在高速粉碎机混匀制备得嗪草酸.烯草酮粉剂。
附表：嗪草酸与烯草酮、拿捕净混用对大豆田杂草的防治效果(％)
地点：沈阳：播种：8月19日；施药：苗后早期；调查：药后20天(鲜重法)；试验：盆栽；年份：1999年
| 药剂 | 施药量(gai/ha) | 单子叶杂草1 | 双子叶杂草2 | 实际平均防效 | 预期防效(Colby法) | 大豆鲜重抑制率 |
| 嗪草酸 | 10 | 10.3 | 92.6 | 51.4 | 0 | |
| 拿捕净 | 200 | 85.7 | 3.7 | 44.7 | 0 | |
| 烯草酮 | 70 | 90.5 | 3.9 | 47.2 | 0 | |
| 嗪草酸A+拿捕净 | 10+200 | 95.4 | 97.9 | 96.6 | 73.1 | 0 |
| 嗪草酸A+烯草酮 | 10+70 | 99.3 | 96.4 | 97.8 | 74.3 | 0 |
1：稗草、狗尾草；2：反枝苋、苘麻
结论：嗪草酸分别与拿捕净、烯草酮混用时的实际防效均高于其混用预期理论防效，证明嗪草酸与诸有效成分之间混用有增效作用。
Claims (5)
1、嗪草酸与环己烯酮类的除草剂组合物，其特征是：含有有效成分为[[2-氯-4-氟-5-[(四氢-3-氧代-1H，3H-[1，3，4]噻二唑并[3，4，α]亚哒嗪-1-基)氨基]苯基]硫]乙酸甲酯A和除草剂B按重量比1∶0.1～200配制的混合物，除草剂B为2-[1-(2-乙氧基亚氨基)丁基]-5-[2-(乙硫基)丙基]-3-羟基-2-环己烯-1-酮或(RS)-2-[(E)-1-[(E)-3-氯烯丙氧基亚氨基]丙基]-5-[2-(乙硫基)丙基]-3-羟基环己-2-烯酮中的一种或两种。
2、如权利要求1所述的嗪草酸与环己烯酮类的除草剂组合物，其特征是：有效成分重量百分含量为1～90％，加工成可湿性粉剂、悬浮剂、乳油、粉剂、颗粒剂、水剂、微乳剂、溶乳剂或干悬剂。
3、如权利要求1或2所述的嗪草酸与环己烯酮类的除草剂组合物，其特征是：有效成分重量比为A∶B＝1∶2～200。
4、如权利要求3所述的除草剂组合物，其特征是：除草剂B为2-[1-(2-乙氧基亚氨基)丁基]-5-[2-(乙硫基)丙基]-3-羟基-2-环己烯-1-酮时，有效成分重量比为A∶B＝1∶10～100。
5、如权利要求3所述的嗪草酸与环己烯酮类的除草剂组合物，其特征是：除草剂B为(RS)-2-[(E)-1-[(E)-3-氯烯丙氧基亚氨基]丙基]-5-[2-(乙硫基)丙基]-3-羟基环己-2-烯酮时，有效成分重量比为A∶B＝1∶5～20。
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| CN101926351A (zh) * | 2010-09-13 | 2010-12-29 | 尹小根 | 含有嗪草酸甲酯的除草组合物 |
| CN103478143A (zh) * | 2013-09-26 | 2014-01-01 | 安徽丰乐农化有限责任公司 | 一种大豆田除草水悬浮剂 |
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