CN113455513A - 一种除草组合物、制剂及其应用 - Google Patents
一种除草组合物、制剂及其应用 Download PDFInfo
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- CN113455513A CN113455513A CN202110714814.1A CN202110714814A CN113455513A CN 113455513 A CN113455513 A CN 113455513A CN 202110714814 A CN202110714814 A CN 202110714814A CN 113455513 A CN113455513 A CN 113455513A
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Abstract
本发明涉及农药技术领域,具体涉及一种除草组合物、制剂及其应用。一种除草组合物,所述组合物包括组分A和组分B;所述组分A为苯嘧草唑;所述组分B选自乙草胺、丁草胺、异丙甲草胺、二甲吩草胺、硝磺草酮、烟嘧磺隆、莠去津、特丁津、嗪草酮、精异丙甲草胺、精二甲吩草胺中的至少一种;所述组分A和组分B的重量比为1:(1‑80)。本发明通过对乳化剂、溶剂等种类和含量的筛选优化,使该除草组合物制得的水乳剂质量稳定、性能良好,更有利于药效的发挥;该水乳剂在不同温度下贮存不会出现分层、絮凝、聚结和破乳等现象,大大提高了水乳剂的贮存稳定性。本申请除草组合物适用于旱田作物苗前土壤处理。
Description
技术领域
本发明涉及农药技术领域,具体涉及一种除草组合物、制剂及其应用。
背景技术
在农田作物的管理过程中,除草剂是必不可少的。CN105052931A通过采用除草有效成分、环保溶剂、表面活性剂、增效剂、稳定剂、防冻剂和水制备得到一种用于除草的增效水乳剂,具有对环境友好、易降解的特点,然而,单一的除草有效成分很容易导致抗性的产生,且除草谱不够广,同时该增效水乳剂在高低温条件下性能极不稳定,导致其应用受限。
针对上述技术问题,本发明提供了一种含苯嘧草唑的除草组合物及其制得的水乳剂,通过对助剂的选择,解决了目前水乳剂存在的稳定性问题,扩大了水乳剂的应用范围。
发明内容
为了解决上述技术问题,本发明第一个方面提供了一种除草组合物,所述组合物包括组分A和组分B;所述组分A为苯嘧草唑;所述组分B选自乙草胺、丁草胺、异丙甲草胺、二甲吩草胺、硝磺草酮、烟嘧磺隆、莠去津、特丁津、嗪草酮、精异丙甲草胺、精二甲吩草胺中的至少一种;所述组分A和组分B的重量比为1:(1-80)。
在一种优选的实施方式中,当组分B为乙草胺、丁草胺、异丙甲草胺、二甲吩草胺、精异丙甲草胺、精二甲吩草胺中的至少一种时,所述组分A和组分B的重量比为1:(20-60)。
在一种优选的实施方式中,当组分B为硝磺草酮、烟嘧磺隆中的至少一种时,所述组分A和组分B的重量比为1:(1-10)。
在一种优选的实施方式中,当组分B为莠去津、特丁津、嗪草酮种的至少一种时,所述组分A和组分B的重量比为1:(10-50)。
发明人发现,苯嘧草唑与组分B提供的活性组分按一定比例进行复配使用后,由于两种有效成分的作用机理独特不存在交互抗性,产生协同增效的作用,扩大了杀草谱,提高了防效,弥补单用药剂对主要杂草防效效果差的缺陷;同时提高组合物各成分的持效性,延缓杂草抗药性的产生,减少农药反复使用次数,降低使用量及成本;可广泛应用于旱田作物。
本发明第二个方面提供了一种除草组合物制剂,由所述的除草组合物和农药学上可接受的辅料组成。
在一种优选的实施方式中,所述除草组合物制剂的剂型选自乳油、水乳剂、微乳剂、可分散油悬浮剂、悬乳剂、微囊悬浮-水乳剂、可湿性粉剂、水分散粒剂中的一种。
在一种更优选的实施方式中,所述除草组合物占所述除草组合物制剂的重量百分比为1-90%。
在一种更优选的实施方式中,所述除草组合物制剂的剂型为水乳剂;所述农药学上可接受的辅料包括溶剂、乳化剂、增稠剂、抗冻剂、消泡剂、密度调节剂、pH调节剂中的至少一种。
本发明中,所述水乳剂的制备原料,按重量百分比计,至少包括以下组分:除草组合物1-60%、乳化剂2-10%、增稠剂1-5%、抗冻剂0.5-3%、溶剂补足余量。
乳化剂
乳化剂是能使两种或两种以上互不相溶的组分的混合液体形成稳定的乳状液的一类化合物。其作用原理是在乳化过程中,分散相以微滴(微米级)的形式分散在连续相中,乳化剂降低了混合体系中各组分的界面张力,并在微滴表面形成较坚固的薄膜或由于乳化剂给出的电荷而在微滴表面形成双电层,阻止微滴彼此聚集,而保持均匀的乳状液。从相的观点来说,乳状液仍是非均相体系。乳状液中的分散相可以是水相,也可以是油相,大多数为油相;连续相可以是油相,也可以是水相,大多数为水相。乳化剂是一种表面活性剂,分子中有亲水基和亲油基。为了表示乳化剂的亲水性或亲油性,通常采用“亲水亲油平衡值(HLB值)”,HLB值愈低,其亲油性愈强;反之,HLB值愈高,其亲水性愈强。各种乳化剂的HLB值不同,为了获得稳定的乳状液,必须选择合适的乳化剂。
本发明中,所述乳化剂选自烷基酚聚氧乙烯醚、苯乙基苯酚聚氧乙烯聚氧丙烯醚、聚氧乙烯失水山梨醇月桂酸单酯、聚氧乙烯失水山梨醇棕桐酸单酯、聚氧乙烯失水山梨醇硬脂酸单酯、失水山梨醇油酸单酯、失水山梨醇月桂酸酯、失水山梨醇单棕桐酸酯、失水山梨醇硬脂酸酯、蓖麻油聚氧乙烯醚、烷基苯磺酸盐、烷基萘磺酸盐、烷基磺酸盐中的至少一种。
在一种优选的实施方式中,所述乳化剂为蓖麻油聚氧乙烯醚、失水山梨醇单棕榈酸酯和十二烷基苯磺酸钠的组合,重量比为(10-20):(1-5):1。
在一种更优选的实施方式中,所述乳化剂为蓖麻油聚氧乙烯醚、失水山梨醇单棕榈酸酯和十二烷基苯磺酸钠的组合,重量比为16:3:1。
本发明中,所述蓖麻油聚氧乙烯醚的HLB值为11-16。
在一种更优选的实施方式中,所述蓖麻油聚氧乙烯醚的HLB值为13-14。
本发明中,所述蓖麻油聚氧乙烯醚的来源,没有特别的限制,可提及佳化化学股份有限公司,牌号EL-30、EL-40、HEL-40、EL-60等。
本发明中,所述失水山梨醇单棕榈酸酯的来源,没有特别的限制,可提及江苏省海安是由化工厂,型号S-40。
本发明中,所述十二烷基苯磺酸钠的来源,没有特别的限制,可提及廊坊鹏彩精细化工有限公司。
水乳剂为O/W的乳液体系,是热力学不稳定,动力学稳定的多相体系,而本发明通过对水乳剂的优选复配,提高其热贮物理稳定性、低温贮藏稳定性。发明人认为可能的原因是,本体系采用蓖麻油聚氧乙烯醚、失水山梨醇单棕榈酸酯和十二烷基苯磺酸钠的复配,乳化剂分子在油水界面膜上紧密排列,膜强度增加,乳状液的稳定性增强,尤其当三者的重量比为(10-20):(1-5):1时,效果最佳。如果增加失水山梨醇单棕榈酸酯的含量,混合乳化剂的HLB值降低,水乳剂的热贮稳定性就变差,这是因为苯嘧草唑在高温条件下融化成液体,聚集趋势增强,同时当乳化剂分布于油水界面时,亲油性乳化剂的比例增大,来自油相的拉力大于来自水相的拉力,当液滴碰撞时,乳化剂分子易被挤入油相中,界面膜强度下降,导致液滴聚并出现清油层。另外,发明人还发现,本体系复配一定量的十二烷基苯磺酸钠可改善水乳剂稀释液稳定性,这是因为本体系亲水性较强的乳化剂蓖麻油聚氧乙烯醚的含量较多,当混合乳化剂亲水性较强时,会增加有机溶剂在水中的溶解度,从而造成原药晶体的析出,而复配少量十二烷基苯磺酸钠后,不仅能够降低溶剂在水中的溶解度,还可在一定程度上增强乳液的稳定性,但是过量加入会使水乳剂的热贮稳定性下降。
增稠剂
又称胶凝剂,是一种能增加胶乳、液体黏度的物质,用于食品时又称糊料。增稠剂可以提高物系黏度,使物系保持均匀稳定的悬浮状态或乳浊状态,或形成凝胶;大多数增稠剂兼具乳化作用。可分为天然和合成两大类。天然品大多数从含多糖类黏性物质的植物和海藻类制取,如淀粉、阿拉伯胶、果胶、琼脂、明胶、海藻胶、角叉胶、糊精等,通用明胶、可溶性淀粉、多糖衍生物等可用于化妆品;合成品有羧甲基纤维素、丙二醇藻蛋白酸酯、甲基纤维素、淀粉磷酸钠、羧甲基纤维素钠、藻蛋白酸钠、酪蛋白、聚丙烯酸钠、聚氧乙烯、聚乙烯吡咯烷酮等。
本发明中,所述增稠剂,没有特别的限制,可提及黄原胶、羟甲基纤维素钠聚乙烯醇、硅酸镁铝、海藻酸钠、瓜胶、明胶等。
在一种优选的实施方式中,所述增稠剂为聚乙烯醇。
发明人认为,本体系添加一定量的聚乙烯醇作增稠剂,一方面聚乙烯醇分子能够串插排列在表面活性剂胶束的周围,形成表面活性剂的混合膜,使膜强度增强,同时降低了油水界面张力,从而使乳状液的稳定性进一步提高;另一方面还能够提高水乳剂的粘度,使其分层率降低,乳状液常温物理稳定性增强,这是因为体系的粘度越大,液滴在连续相中运动所受粘滞阻力越大,运动速度下降,扩散系数越小,乳状液的分层,絮凝和聚集速度均下降,稳定性增加。然而增稠剂的量不能太多,否则水乳剂的流动性变差,产品倾倒性指标不合格,影响使用。
抗冻剂
抗冻剂又称阻冻剂,是一类加入到其他液体(一般为水)中以降低其冰点、提高抗冻能力的物质。它也具有溶解冰晶和阻止冰晶长大的作用。主要用于内燃机冷冻系统,还用于空调系统、太阳能系统、雪溶系统和冷冻干燥等方面。
本发明中,所述防冻剂,没有特别的限制,可提及乙二醇、丙二醇、丙三醇、己二醇、尿素、硫酸铵等。
溶剂
本发明中,所述溶剂为有机溶剂和水的组合。
在一种优选的实施方式中,所述有机溶剂和乳化剂的重量比为(2-5):1。
在一种更优选的实施方式中,所述有机溶剂和乳化剂的重量为3:1。
本发明中,所述有机溶剂选自烃类溶剂、酮类溶剂、酯类溶剂、醇类溶剂、芳烃类溶剂中的至少一种。
在一种优选的实施方式中,所述有机溶剂为芳烃类溶剂。
在一种更优选的实施方式中,所述芳烃类溶剂,可提及甲苯、邻二甲苯、150#溶剂油等。
在一种更优选的实施方式中,所述芳烃类溶剂为150#溶剂油。
发明人发现,当溶剂和乳化剂的重量比为(2-5):1时,制得水乳剂液滴分布致密,体系黏度增大,小液滴运动所受的阻力增大,而且有足够的乳化剂在小液滴油水界面上形成致密的界面膜,因此小液滴不易发生聚并破乳,乳状液稳定性增强。然而溶剂的量不能太多,否则会发生乳状液的转相。
发明人还发现,乳化剂的亲油基中含有双键,且亲水基聚氧乙烯链含量在合理范围内时,水乳剂的析油率降低。发明人认为可能的原因是,芳烃类溶剂含有双键,当乳化剂亲油基同样引入双键时,亲油基与油分子之间的作用力增强,在液膜的沟流的剪切的拉动作用下,亲油基与油分子发生相对位移时对油分子的带动作用增强,表现为界面粘度增大;同样,亲油基变长也会加强相邻油分子之间以其油分子的作用力增大,增强了界面黏度,使相应的水乳剂体系稳定性高。当活性剂亲水基中聚氧乙烯聚合数增加时,亲水基中含有的氧基团,易水化降低膜的稳定性,而且聚氧乙烯在水中成卷曲状,它所占的面积随聚合度的增大而增大,造成膜强度的降低,相应水乳剂体系稳定性减弱,因此本体系在以芳烃类为溶剂,蓖麻油聚氧乙烯醚、失水山梨醇单棕榈酸酯和十二烷基苯磺酸钠复配为乳化剂时,制得水乳剂的稳定性达到最佳。
水
本发明中,所述水为去离子水、蒸馏水、纯净水等。
发明人认为,本体系所用水不能为自来水,因为自来水中含有多种无机离子,增大了水相与油相的密度差,导致离心分层率增大。
本发明中,所述水乳剂的制备方法为:
(1)将除草剂组合物溶解于有机溶剂中,加入乳化剂,搅拌均匀,得油相;
(2)将增稠剂、抗冻剂与水混合,得水相;
(3)在高速剪切条件下,将油相缓慢加入水相后,继续剪切20-60min,即得。
本发明第三个方面提供了所述除草剂组合物的应用,应用于旱田作物苗前土壤处理。
下面通过实施例对本发明进行具体描述。有必要在此指出的是,以下实施例只用于对本发明作进一步说明,不能理解为对本发明保护范围的限制,该领域的专业技术人员根据上述本发明的内容做出的一些非本质的改进和调整,仍属于本发明的保护范围。
有益效果
本发明提供了一种除草组合物及包含该除草组合物的水乳剂,具有以下有益效果:
1.通过苯嘧草唑和乙草胺、丁草胺、异丙甲草胺、二甲吩草胺、硝磺草酮、烟嘧磺隆、莠去津、特丁津、嗪草酮、精异丙甲草胺、精二甲吩草胺的复配,由于作用机理独特不存在交互抗性,产生协同增效的作用,扩大了杀草谱,提高了防效,弥补单用药剂对主要杂草防效效果差的缺陷;提高组合物各成分的持效性,延缓杂草抗药性的产生,减少农药反复使用次数,降低使用量及成本;可应用于旱田作物的苗前土壤处理。
2.通过对乳化剂、溶剂等种类和含量的筛选优化,使制得的水乳剂质量稳定、性能良好,更有利于药效的发挥;该水乳剂在不同温度下贮存不会出现分层、絮凝、聚结和破乳等现象,大大提高了水乳剂的贮存稳定性。
具体实施方式
实施例1
实施例1提供了一种除草组合物水乳剂,所述水乳剂的制备原料,按重量百分比计,包括以下组分:除草组合物51%、乳化剂4%、增稠剂2%、抗冻剂1%、有机溶剂12%、水补足余量;
所述除草组合物为苯嘧草唑和乙草胺的组合,重量比为1:50;所述乳化剂为蓖麻油聚氧乙烯醚、失水山梨醇单棕榈酸酯和十二烷基苯磺酸钠的组合,重量比为16:3:1;所述蓖麻油聚氧乙烯醚,购买于佳化化学股份有限公司,牌号EL-30;所述失水山梨醇单棕榈酸酯,购买于江苏省海安是由化工厂,型号S-40;所述十二烷基苯磺酸钠,购买于廊坊鹏彩精细化工有限公司;所述增稠剂为聚乙烯醇;所述抗冻剂为丙三醇;所述有机溶剂为150#溶剂油;所述水为去离子水。
所述水乳剂的制备方法为:
(1)将除草剂组合物溶解于有机溶剂中,加入乳化剂,搅拌均匀,得油相;
(2)将增稠剂、抗冻剂与水混合,得水相;
(3)在高速剪切条件下,将油相缓慢加入水相后,继续剪切40min,即得。
实施例2
实施例2提供了一种除草组合物水乳剂,所述水乳剂的制备原料,按重量百分比计,包括以下组分:除草组合物30%、乳化剂3%、增稠剂1%、抗冻剂0.5%、有机溶剂15%、水补足余量;
所述除草组合物为苯嘧草唑和精异丙甲草胺的组合,重量比为1:50;所述乳化剂为蓖麻油聚氧乙烯醚、失水山梨醇单棕榈酸酯和十二烷基苯磺酸钠的组合,重量比为10:1:1;所述蓖麻油聚氧乙烯醚,购买于佳化化学股份有限公司,牌号EL-30;所述失水山梨醇单棕榈酸酯,购买于江苏省海安是由化工厂,型号S-40;所述十二烷基苯磺酸钠,购买于廊坊鹏彩精细化工有限公司;所述增稠剂为聚乙烯醇;所述抗冻剂为丙三醇;所述有机溶剂为150#溶剂油;所述水为去离子水。
所述水乳剂的制备方法为:
(1)将除草剂组合物溶解于有机溶剂中,加入乳化剂,搅拌均匀,得油相;
(2)将增稠剂、抗冻剂与水混合,得水相;
(3)在高速剪切条件下,将油相缓慢加入水相后,继续剪切40min,即得。
实施例3
实施例3提供了一种除草组合物水乳剂,所述水乳剂的制备原料,按重量百分比计,包括以下组分:除草组合物12%、乳化剂8%、增稠剂5%、抗冻剂3%、有机溶剂24%、水补足余量;
所述除草组合物为苯嘧草唑和烟嘧磺隆的组合,重量比为1:5;所述乳化剂为蓖麻油聚氧乙烯醚、失水山梨醇单棕榈酸酯和十二烷基苯磺酸钠的组合,重量比为20:5:1;所述蓖麻油聚氧乙烯醚,购买于佳化化学股份有限公司,牌号EL-30;所述失水山梨醇单棕榈酸酯,购买于江苏省海安是由化工厂,型号S-40;所述十二烷基苯磺酸钠,购买于廊坊鹏彩精细化工有限公司;所述增稠剂为聚乙烯醇;所述抗冻剂为丙三醇;所述有机溶剂为150#溶剂油;所述水为去离子水。
所述水乳剂的制备方法为:
(1)将除草剂组合物溶解于有机溶剂中,加入乳化剂,搅拌均匀,得油相;
(2)将增稠剂、抗冻剂与水混合,得水相;
(3)在高速剪切条件下,将油相缓慢加入水相后,继续剪切40min,即得。
实施例4
实施例4与实施例1的区别在于,所述乳化剂不包括蓖麻油聚氧乙烯醚。
实施例5
实施例5与实施例1的区别在于,所述蓖麻油聚氧乙烯醚被替换成壬基酚聚氧乙烯醚,购买于南通润丰石油化工有限公司。
实施例6
实施例6与实施例1的区别在于,所述乳化剂不包括失水山梨醇单棕榈酸酯。
实施例7
实施例7与实施例1的区别在于,所述乳化剂不包括十二烷基苯磺酸钠。
实施例8
实施例8与实施例1的区别在于,所述增稠剂为黄原胶。
实施例9
实施例9与实施例1的区别在于,所述溶剂为二甲基甲酰胺。
实施例10
实施例10与实施例1的区别在于,所述溶剂和乳化剂的重量比为10:1。
实施例11
实施例11与实施例1的区别在于,所述除草组合物为苯嘧草唑和乙草胺的组合,重量比为1:30。
性能测试
1.热贮稳定性试验:将水乳剂置于相同的封闭性好的具塞刻度试管中,于54±0.1℃的水浴锅中,热贮14天;热贮后体系均一,析水率小于10%为合格,反之不合格。
2.冷贮稳定性试验:将水乳剂置于具塞刻度试管中,然后于冰箱中在-18℃下冷冻24h后,让其在室温下自动化开,然后再置于冰箱中,如此往复十个来回;观察是否有油析出,有油相析出为不合格,反之合格。
3.乳化稳定性的测定:将水乳剂用342ppm的标准硬水稀释200倍,于30℃恒温水浴中静置1h后取出;观察乳液分离情况,若上无浮油下无沉淀,则稳定性合格,反之不合格。
实施例性能测试结果见表1。
表1.实施例性能测试结果
实施例 | 热贮稳定性 | 冷贮稳定性 | 乳化稳定性 |
实施例1 | 合格 | 合格 | 合格 |
实施例2 | 合格 | 合格 | 合格 |
实施例3 | 合格 | 合格 | 合格 |
实施例4 | 不合格 | 不合格 | 不合格 |
实施例5 | 不合格 | 不合格 | 不合格 |
实施例6 | 不合格 | 不合格 | 不合格 |
实施例7 | 不合格 | 不合格 | 不合格 |
实施例8 | 不合格 | 不合格 | 不合格 |
实施例9 | 不合格 | 不合格 | 不合格 |
实施例10 | 不合格 | 不合格 | 不合格 |
实施例11 | 合格 | 合格 | 合格 |
4.防效试验:
供试样品:
95%苯嘧草唑原药、81.5%乙草胺乳油
作物:
玉米:市场上大面积种植的常规品种(铁杆505、科聚佳23)
杂草:
一年生杂草如苘麻、藜、鸭跖草、反枝苋、龙葵、野西瓜苗、马齿苋、铁苋菜、苍耳、小飞蓬、牛筋草、野黍、狗尾草、绿狗尾、马唐、稗草、看麦娘、野燕麦、黑麦草、早熟禾、谷莠子等
施药方法:
每亩兑水45kg,土壤喷雾(玉米、杂草种子一起播种,播种后24h施药)
试验结果统计分析方法:
供试药剂ED50/ED90值计算
采用DPS统计分析软件进行计算
共毒系数计算:
其中:PA为药剂A在混剂有效成分中所占的比例,PB为药剂B在混剂有效成分中所占的比例,若共毒系数小于80,为拮抗作用;共毒系数大于120,为增效作用;共毒系数在80-120之间为相加作用。
结果见表2,其中A为95%苯嘧草唑原药,B为81.5%乙草胺乳油。
结果如下:其中,表2供试药剂(折百比例)指的是折合成100%苯嘧草唑和100%乙草胺计算得到,例如当95%苯嘧草唑原药和81.5%乙草胺乳油的重量比为1:90时,此时折百比例得到的数值为1:77。
表2不同配比供试药剂药效结果汇总
备注:ED50为不同药剂处理15天后稗草活性测定结果
5.田间药效试验:
测试药剂:
实施例1除草组合物水乳剂
对照药剂:
10%苯嘧草唑水乳剂(南通江山农药化工股份有限公司)、81.5%乙草胺乳油(南通江山农药化工股份有限公司)
供试作物:
玉米(品种为苏玉糯11号)
防除对象:
一年生杂草(杂草主要有马唐、牛筋草、马齿苋、鳢肠、铁苋菜等。)
试验方法:
小区划分:小区面积20㎡,随机编排,每个处理重复3次。
使用方法:玉米播种前后,每亩用水45kg,均匀喷雾于地表面,试验于玉米播种前用药1次。
调查、记录和测量方法
气象资料:试验当天天气晴好,微风;试验期间气温正常,药效基本正常发挥。
田间管理资料:基肥45%复合肥50kg/亩。其他防病治虫、追肥等田间管理按正常管理进行。
杂草调查:用药后7天、10天、15天、30天、45天目测调查总杂草防效。
调查方法:目测。
药效计算方法:记录目测相对防效百分比。
作物调查:玉米播种后目测出苗情况;播种后4天、7天、12天三次调查出苗数;播种后32天、47天观察玉米长势情况。
调查方法:每个处理定20株,观察不同剂量对玉米的安全程度。
药剂对杂草防效性调查结果如下:
表3实施例1对杂草防效性调查汇总
药剂对作物安全性调查结果如下:
表4实施例1对作物安全性调查汇总
前述的实例仅是说明性的,用于解释本发明所述方法的一些特征。所附的权利要求旨在要求可以设想的尽可能广的范围,且本文所呈现的实施例仅是根据所有可能的实施例的组合的选择的实施方式的说明。因此,申请人的用意是所附的权利要求不被说明本发明的特征的示例的选择限制。在权利要求中所用的一些数值范围也包括了在其之内的子范围,这些范围中的变化也应在可能的情况下解释为被所附的权利要求覆盖。
Claims (10)
1.一种除草组合物,其特征在于,所述组合物包括组分A和组分B;所述组分A为苯嘧草唑;所述组分B选自乙草胺、丁草胺、异丙甲草胺、二甲吩草胺、硝磺草酮、烟嘧磺隆、莠去津、特丁津、嗪草酮、精异丙甲草胺、精二甲吩草胺中的至少一种;所述组分A和组分B的重量比为1:(1-80)。
2.一种除草组合物制剂,其特征在于,由权利要求1所述的除草组合物和农药学上可接受的辅料组成。
3.根据权利要求2所述的除草组合物制剂,其特征在于,所述除草组合物制剂的剂型选自乳油、水乳剂、微乳剂、可分散油悬浮剂、悬乳剂、微囊悬浮-水乳剂、可湿性粉剂、水分散粒剂中的一种。
4.根据权利要求2所述的除草组合物制剂,其特征在于,所述除草组合物占所述除草组合物制剂的重量百分比为1-90%。
5.根据权利要求2所述的除草组合物制剂,其特征在于,所述除草组合物制剂的剂型为水乳剂;所述农药学上可接受的辅料包括溶剂、乳化剂、增稠剂、抗冻剂、消泡剂、密度调节剂、pH调节剂中的至少一种。
6.根据权利要求5所述的除草组合物制剂,其特征在于,所述乳化剂选自烷基酚聚氧乙烯醚、苯乙基苯酚聚氧乙烯聚氧丙烯醚、聚氧乙烯失水山梨醇月桂酸单酯、聚氧乙烯失水山梨醇棕桐酸单酯、聚氧乙烯失水山梨醇硬脂酸单酯、失水山梨醇油酸单酯、失水山梨醇月桂酸酯、失水山梨醇单棕桐酸酯、失水山梨醇硬脂酸酯、蓖麻油聚氧乙烯醚、烷基苯磺酸盐、烷基萘磺酸盐、烷基磺酸盐中的至少一种。
7.根据权利要求6所述的除草组合物制剂,其特征在于,所述乳化剂为蓖麻油聚氧乙烯醚、失水山梨醇单棕榈酸酯和十二烷基苯磺酸钠的组合,重量比为(10-20):(1-5):1。
8.根据权利要求5所述的除草组合物制剂,其特征在于,所述溶剂为有机溶剂和水的组合,所述有机溶剂和乳化剂的重量比为(2-5):1。
9.根据权利要求8所述的除草组合物制剂,其特征在于,所述有机溶剂选自烃类溶剂、酮类溶剂、酯类溶剂、醇类溶剂、芳烃类溶剂中的至少一种。
10.一种根据权利要求5-9任一项所述的除草组合物制剂的应用,其特征在于,应用于旱田作物苗前土壤处理。
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