CN114467951A - 一种高稳定性水稻田用除草剂及其制备方法 - Google Patents
一种高稳定性水稻田用除草剂及其制备方法 Download PDFInfo
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/48—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with two nitrogen atoms as the only ring hetero atoms
- A01N43/54—1,3-Diazines; Hydrogenated 1,3-diazines
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/30—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests characterised by the surfactants
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
- A01N37/22—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof the nitrogen atom being directly attached to an aromatic ring system, e.g. anilides
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N47/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid
- A01N47/08—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom not being member of a ring and having no bond to a carbon or hydrogen atom, e.g. derivatives of carbonic acid the carbon atom having one or more single bonds to nitrogen atoms
- A01N47/28—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N<
- A01N47/36—Ureas or thioureas containing the groups >N—CO—N< or >N—CS—N< containing the group >N—CO—N< directly attached to at least one heterocyclic ring; Thio analogues thereof
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Toxicology (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
本发明公开了一种高稳定性水稻田用除草剂,按照质量百分比由以下组份组成:嘧草醚10‑15%、丙草胺10‑12%、苄嘧磺隆4‑9%、无机盐5‑8%、十二烷基苯磺酸钠0.2‑0.5%、黄腐酸0.5‑2.5%、分散剂0.5‑1.5%、抗冻剂0.2‑0.8%、类水滑石载体1‑4%、增稠剂0.4‑1.2%、粘结剂0.5‑1%、水10‑15%、余量为油性溶剂,以上组分的质量百分比之和为100%。还公开了该除草剂的制备方法。以嘧草醚、丙草胺、苄嘧磺隆作为活性组分,复配后通过不同有效成分间的增效作用,减缓杂草的抗药性;另外,通过添加抗冻剂、增稠剂和分散剂,提高除草剂的稳定性,保证在有效期内各项性能指标符合要求。
Description
技术领域
本发明属于农用药品制备工艺技术领域,具体涉及一种高稳定性水稻田用除草剂,还涉及该水稻田用除草剂的制备方法。
背景技术
稻田杂草同水稻争肥、争光、争空间,致使水稻生长不良,产量和品质下降,成为影响水稻生产的主要因素之一。近年来,随着稻田杂草草相的变化,杂草防除难度越来越大。目前稻田杂草种类近40种,发生频率较高的禾本科杂草有稗草、千金子、双穗雀稗、李氏禾、杂草稻、假稻;莎草科杂草有异型莎草、水三棱、萤蔺(块茎和种子繁殖)、水莎草、扁秆藨草、牛毛草;阔叶杂草有水苋菜、鳢肠、鸭舌草、陌上菜、节节菜、矮慈菇、空心莲子草。其中杂草稻、稗草、千金子、水苋菜、鲤肠等已成为严重为害水稻生产的主要杂草。化学防治省时、省力,由于其作用快、效果好、使用方便且不受地区季节性限制,而被广泛的使用。
目前,常用的除草剂为有机化合物,如中国专利(申请号:201910349960.1,公开号:CN110024788A)公开了双环磺草酮复配的水稻田除草剂,包括双环磺草酮、丙草胺、双草醚、助剂和载体,采用复配的除草剂,克服了双环磺草酮对阔叶草的防除效果不佳的不足,除草剂杀草范围广,用量少,但是其杀草速度较缓,且不易降解。中国专利(申请号:201710284574.X,公开号:CN106973918A)公开了一种含噁嗪草酮和异丙草胺的除草剂组合物及其应用,包括噁嗪草酮和异丙草胺,该除草剂防效优于单独使用时的活性,减缓杂草抗性的产生,对作物安全;但是这类除草剂活性组分单一,不能满足水稻整个生长过程中的除草,且活性组分容易发生失效,稳定性差。
发明内容
本发明的目的是提供一种高稳定性水稻田用除草剂,该除草剂对于杂草防除具有增效作用,提高了杂草去除效率。
本发明的另一目的是提供一种高稳定性水稻田用除草剂的制备方法。
本发明所采用的技术方案是,一种高稳定性水稻田用除草剂,按照质量百分比由以下组份组成:嘧草醚10-15%、丙草胺10-12%、苄嘧磺隆4-9%、无机盐5-8%、十二烷基苯磺酸钠0.2-0.5%、黄腐酸0.5-2.5%、分散剂0.5-1.5%、抗冻剂0.2-0.8%、固体类水滑石载体1-4%、增稠剂0.4-1.2%、粘结剂0.5-1%、水10-15%、余量为油性溶剂,以上组分的质量百分比之和为100%。
本发明的特点还在于,
无机盐为硫酸镁、硝酸钾、氯化钾、硫酸亚铁中的任意一种或者两种。
分散剂为木质素磺酸钠、木质素磺酸钙、木质素磺酸镁中的任意一种;抗冻剂为乙二醇、甘油、丙二醇中的任意一种。
增稠剂为羟乙基纤维素、聚丙烯酸钠、聚乙烯吡咯烷酮中的任意一种或者多种。
粘结剂为改性玉米淀粉、聚丙烯酸酯、烷基芳基聚氧乙基醚中的任意一种。
油性溶剂为邻苯二甲酸二甲酯、油酸甲酯、二甲苯中的任意一种或者多种。
本发明所采用的另一技术方案是,一种高稳定性水稻田用除草剂的制备方法,具体按照以下步骤实施:
步骤1,制备固体类水滑石载体;
步骤2,将无机盐、固体类水滑石载体和水进行混合,搅拌均匀,之后加入黄腐酸,搅拌,静置1-2h,得到均匀水相;
步骤3,将嘧草醚、丙草胺、苄嘧磺隆、十二烷基苯磺酸钠与油性溶剂混合,之后在60-70℃的条件下加入增稠剂和粘结剂进行搅拌反应,反应温度为100℃-130℃,反应时间为30min-50min,之后再加入抗冻剂和分散剂,搅拌,搅拌时间为20min-35min,得到均匀油相;
步骤4,将油相与水相混合分散后得到高稳定性水稻田用除草剂。
本发明的特点还在于,
步骤1中,具体为:将Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水混合均匀,得到混合盐溶液;将NaOH溶液与混合盐溶液分别滴定于Na2CO3溶液中控制滴定的速度,控制溶液pH在9-10之间,完成滴定后,使混合溶液加热升温至60-65℃,搅拌并陈化,冷却,采用去离子水将溶液洗涤至中性,干燥,研磨,过筛,即可得到类水滑石。
Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水的质量比为1-2:2-3:0.04-0.12:50-100。
滴定时间为1-2.5h;陈化时间为5h-8h;过筛时,采用80-100目的筛网。
本发明的有益效果是,通过以嘧草醚、丙草胺、苄嘧磺隆作为复配的活性组分,复配后通过不同有效成分间的增效作用,可以减少药物的使用量,减缓杂草的抗药性,并且对作物安全性高;另外,通过添加抗冻剂、增稠剂和分散剂,提高除草剂的稳定性,保持活性组分的持久存放,保证在有效期内各项性能指标符合要求。
具体实施方式
下面结合具体实施方式对本发明进行详细说明。
本发明一种高稳定性水稻田用除草剂,按照质量百分比由以下组份组成:嘧草醚10-15%、丙草胺10-12%、苄嘧磺隆4-9%、无机盐5-8%、十二烷基苯磺酸钠0.2-0.5%、黄腐酸0.5-2.5%、分散剂0.5-1.5%、抗冻剂0.2-0.8%、固体类水滑石载体1-4%、增稠剂0.4-1.2%、粘结剂0.5-1%、水10-15%、余量为油性溶剂,以上组分的质量百分比之和为100%。
无机盐为硫酸镁、硝酸钾、氯化钾、硫酸亚铁中的任意一种或者两种组合;
分散剂为木质素磺酸钠、木质素磺酸钙、木质素磺酸镁中的任意一种;
抗冻剂为乙二醇、甘油、丙二醇中的任意一种;
增稠剂为羟乙基纤维素、聚丙烯酸钠、聚乙烯吡咯烷酮中的任意一种或者多种;
粘结剂为改性玉米淀粉、聚丙烯酸酯、烷基芳基聚氧乙基醚中的任意一种;
油性溶剂为邻苯二甲酸二甲酯、油酸甲酯、二甲苯中的任意一种或者多种;
本发明一种高稳定性水稻田用除草剂的制备方法,具体按照以下步骤实施:
步骤1,制备固体类水滑石载体;
将Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水混合均匀,得到混合盐溶液;将NaOH溶液与混合盐溶液分别滴定于Na2CO3溶液中控制滴定的速度,控制溶液pH在9-10之间,完成滴定后,使混合溶液加热升温至60-65℃,搅拌并陈化,冷却,采用去离子水将溶液洗涤至中性,干燥,研磨,过筛,即可得到类水滑石。
Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水的质量比为1-2:2-3:0.04-0.12:50-100;
滴定时间为1-2.5h;陈化时间为5h-8h;过筛时,采用80-100目的筛网;
步骤2,将无机盐、固体类水滑石载体和水进行混合,搅拌均匀,之后加入黄腐酸,搅拌,静置1-2h,得到均匀水相;
步骤3,将嘧草醚、丙草胺、苄嘧磺隆、十二烷基苯磺酸钠与油性溶剂混合,之后在60-70℃的条件下加入增稠剂和粘结剂进行搅拌反应,反应温度为100℃-130℃,反应时间为30min-50min,之后再加入抗冻剂和分散剂,搅拌,搅拌时间为20min-35min,得到均匀油相;
步骤4,将油相与水相混合分散后得到高稳定性水稻田用除草剂。
本发明的高稳定性水稻田用除草剂,通过以嘧草醚、丙草胺、苄嘧磺隆作为复配的活性组分,对于杂草防除具有增效作用,提高了除草效果;通过加入黄腐酸促进植物生长尤其能适当控制作物叶面气孔的开放度,减少蒸腾,对抗旱有重要作用,能提高抗逆能力,增产和改善品质作用,与这些活性组分混用,具有协同增效作用;通过添加固体类水滑石载体,可以很好的吸附除草剂中的有效成分,达到缓释的效果;通过添加抗冻剂、增稠剂和分散剂,提高除草剂的稳定性,保持活性组分的持久存放,保证在有效期内各项性能指标符合要求。另外,本发明的除草剂,防效优于各组分单独使用时的功效,除草范围广,对稗草、阔叶杂草和莎草均有防效,对多年生草类、顽固杂草以及耐磺酰脲类杂草有效。
实施例1
本发明一种高稳定性水稻田用除草剂,按照质量百分比由以下组份组成:嘧草醚10%、丙草胺10%、苄嘧磺隆9%、无机盐5%、十二烷基苯磺酸钠0.2%、黄腐酸2%、分散剂1%、抗冻剂0.2%、固体类水滑石载体1%、增稠剂0.4%、粘结剂0.5%、水15%、余量为油性溶剂,以上组分的质量百分比之和为100%。
无机盐为硫酸镁;分散剂为木质素磺酸钠;抗冻剂为乙二醇;增稠剂为质量比为1:2的羟乙基纤维素和聚丙烯酸钠;粘结剂为改性玉米淀粉;
油性溶剂为体积比为2:1的邻苯二甲酸二甲酯和油酸甲酯;
一种高稳定性水稻田用除草剂的制备方法,具体按照以下步骤实施:
步骤1,制备固体类水滑石载体;
将Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水混合均匀,得到混合盐溶液;将NaOH溶液与混合盐溶液分别滴定于Na2CO3溶液中控制滴定的速度,控制溶液pH=9,完成滴定后,使混合溶液加热升温至60℃,搅拌并陈化,冷却,采用去离子水将溶液洗涤至中性,干燥,研磨,过筛,即可得到类水滑石。
Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水的质量比为1:2:0.04:50;
滴定时间为2h;陈化时间为6h;过筛时,采用80目的筛网;
步骤2,将无机盐、固体类水滑石载体和水进行混合,搅拌均匀,之后加入黄腐酸,搅拌,静置1h,得到均匀水相;
步骤3,将嘧草醚、丙草胺、苄嘧磺隆、十二烷基苯磺酸钠与油性溶剂混合,之后在60℃的条件下加入增稠剂和粘结剂进行搅拌反应,反应温度为100℃,反应时间为30min,之后再加入抗冻剂和分散剂,搅拌,搅拌时间为35min,得到均匀油相;
步骤4,将油相与水相混合分散后得到高稳定性水稻田用除草剂。
实施例2
本发明一种高稳定性水稻田用除草剂,按照质量百分比由以下组份组成:嘧草醚12%、丙草胺10-%、苄嘧磺隆8%、无机盐6%、十二烷基苯磺酸钠0.2%、黄腐酸1.5%、分散剂0.5%、抗冻剂0.5%、固体类水滑石载体2.5%、增稠剂1%、粘结剂1%、水12%、余量为油性溶剂,以上组分的质量百分比之和为100%。
无机盐为质量比为1:1的硝酸钾和硫酸亚铁两种组合;分散剂为木质素磺酸钙;抗冻剂为甘油;增稠剂为羟乙基纤维素粘结剂为聚丙烯酸酯;
油性溶剂为体积比为1:1.5的邻苯二甲酸二甲酯和二甲苯;
一种高稳定性水稻田用除草剂的制备方法,具体按照以下步骤实施:
步骤1,制备固体类水滑石载体;
将Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水混合均匀,得到混合盐溶液;将NaOH溶液与混合盐溶液分别滴定于Na2CO3溶液中控制滴定的速度,控制溶液pH=9.5,完成滴定后,使混合溶液加热升温至64℃,搅拌并陈化,冷却,采用去离子水将溶液洗涤至中性,干燥,研磨,过筛,即可得到类水滑石。
Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水的质量比为1:3:0.08:80;
滴定时间为2.5h;陈化时间为8h;过筛时,采用100目的筛网;
步骤2,将无机盐、固体类水滑石载体和水进行混合,搅拌均匀,之后加入黄腐酸,搅拌,静置1-2h,得到均匀水相;
步骤3,将嘧草醚、丙草胺、苄嘧磺隆、十二烷基苯磺酸钠与油性溶剂混合,之后在65℃的条件下加入增稠剂和粘结剂进行搅拌反应,反应温度为120℃,反应时间为45min,之后再加入抗冻剂和分散剂,搅拌,搅拌时间为25min,得到均匀油相;
步骤4,将油相与水相混合分散后得到高稳定性水稻田用除草剂。
实施例3
本发明一种高稳定性水稻田用除草剂,按照质量百分比由以下组份组成:嘧草醚15%、丙草胺11%、苄嘧磺隆5%、无机盐7%、十二烷基苯磺酸钠0.5%、黄腐酸2%、分散剂1.2%、抗冻剂0.6%、固体类水滑石载体3%、增稠剂1%、粘结剂0.8%、水10%、余量为油性溶剂;以上组分的质量百分比之和为100%。
无机盐为氯化钾;分散剂为木质素磺酸镁;抗冻剂为丙二醇;增稠剂质量比为2:1的聚丙烯酸钠和聚乙烯吡咯烷酮;粘结剂为烷基芳基聚氧乙基醚;
油性溶剂为体积比为2:1的油酸甲酯和二甲苯;
本发明一种高稳定性水稻田用除草剂的制备方法,具体按照以下步骤实施:
步骤1,制备固体类水滑石载体;
将Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水混合均匀,得到混合盐溶液;将NaOH溶液与混合盐溶液分别滴定于Na2CO3溶液中控制滴定的速度,控制溶液pH=9,完成滴定后,使混合溶液加热升温至60-65℃,搅拌并陈化,冷却,采用去离子水将溶液洗涤至中性,干燥,研磨,过筛,即可得到类水滑石。
Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水的质量比为1:2:0.1:70;
滴定时间为1.5h;陈化时间为6h;过筛时,采用80目的筛网;
步骤2,将无机盐、固体类水滑石载体和水进行混合,搅拌均匀,之后加入黄腐酸,搅拌,静置1h,得到均匀水相;
步骤3,将嘧草醚、丙草胺、苄嘧磺隆、十二烷基苯磺酸钠与油性溶剂混合,之后在60℃的条件下加入增稠剂和粘结剂进行搅拌反应,反应温度为100℃℃,反应时间为50min,之后再加入抗冻剂和分散剂,搅拌,搅拌时间为35min,得到均匀油相;
步骤4,将油相与水相混合分散后得到高稳定性水稻田用除草剂。
实施例4
本发明一种高稳定性水稻田用除草剂,按照质量百分比由以下组份组成:嘧草醚15%、丙草胺12%、苄嘧磺隆9%、无机盐-8%、十二烷基苯磺酸钠0.2%、黄腐酸0.5%、分散剂0.5%、抗冻剂0.2%、固体类水滑石载体4%、增稠剂0.4%、粘结剂0.5%、水10%、余量为油性溶剂;以上组分的质量百分比之和为100%。
无机盐为氯化钾;分散剂为木质素磺酸镁;抗冻剂为甘油;增稠剂为质量比为1:1.2的羟乙基纤维素和聚乙烯吡咯烷;粘结剂为改性玉米淀粉;油性溶剂为二甲苯;
本发明一种高稳定性水稻田用除草剂的制备方法,具体按照以下步骤实施:
步骤1,制备固体类水滑石载体;
将Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水混合均匀,得到混合盐溶液;将NaOH溶液与混合盐溶液分别滴定于Na2CO3溶液中控制滴定的速度,控制溶液pH=10,完成滴定后,使混合溶液加热升温至65℃,搅拌并陈化,冷却,采用去离子水将溶液洗涤至中性,干燥,研磨,过筛,即可得到类水滑石。
Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水的质量比为2:3:0.04:1 00;
滴定时间为2.5h;陈化时间为8h;过筛时,采用100目的筛网;
步骤2,将无机盐、固体类水滑石载体和水进行混合,搅拌均匀,之后加入黄腐酸,搅拌,静置1h,得到均匀水相;
步骤3,将嘧草醚、丙草胺、苄嘧磺隆、十二烷基苯磺酸钠与油性溶剂混合,之后在60℃的条件下加入增稠剂和粘结剂进行搅拌反应,反应温度为130℃,反应时间为30min,之后再加入抗冻剂和分散剂,搅拌,搅拌时间为20min,得到均匀油相;
步骤4,将油相与水相混合分散后得到高稳定性水稻田用除草剂。
表1本发明水稻田用除草剂与市售除草剂的除草效果对比
将本发明实施例1-4制备的水稻田用除草剂与现有市售的除草剂的除草效果进行对比,如表1所示,由表可知,当施药3天后,本发明的除草剂与市售除草剂的除草效果均比较低,且两者的除草效率相差不大,但是当施药后10天,本发明的除草剂对于莎草、尖叶杂草以及阔叶杂草的除草效率明显很高,这说明本发明的除草剂由于其多种机制的共同作用,且杀草范围广,从而能获得较高的除草效果。
Claims (10)
1.一种高稳定性水稻田用除草剂,其特征在于,按照质量百分比由以下组份组成:嘧草醚10-15%、丙草胺10-12%、苄嘧磺隆4-9%、无机盐5-8%、十二烷基苯磺酸钠0.2-0.5%、黄腐酸0.5-2.5%、分散剂0.5-1.5%、抗冻剂0.2-0.8%、固体类水滑石载体1-4%、增稠剂0.4-1.2%、粘结剂0.5-1%、水10-15%、余量为油性溶剂,以上组分的质量百分比之和为100%。
2.根据权利要求1所述的一种高稳定性水稻田用除草剂,其特征在于,所述无机盐为硫酸镁、硝酸钾、氯化钾、硫酸亚铁中的任意一种或者两种。
3.根据权利要求1所述的一种高稳定性水稻田用除草剂,其特征在于,所述分散剂为木质素磺酸钠、木质素磺酸钙、木质素磺酸镁中的任意一种;所述抗冻剂为乙二醇、甘油、丙二醇中的任意一种。
4.根据权利要求1所述的一种高稳定性水稻田用除草剂,其特征在于,所述增稠剂为羟乙基纤维素、聚丙烯酸钠、聚乙烯吡咯烷酮中的任意一种或者多种。
5.根据权利要求1所述的一种高稳定性水稻田用除草剂,其特征在于,所述粘结剂为改性玉米淀粉、聚丙烯酸酯、烷基芳基聚氧乙基醚中的任意一种。
6.根据权利要求1所述的一种高稳定性水稻田用除草剂,其特征在于,所述油性溶剂为邻苯二甲酸二甲酯、油酸甲酯、二甲苯中的任意一种或者多种。
7.一种高稳定性水稻田用除草剂的制备方法,其特征在于,具体按照以下步骤实施:
步骤1,制备固体类水滑石载体;
步骤2,将无机盐、固体类水滑石载体和水进行混合,搅拌均匀,之后加入黄腐酸,搅拌,静置1-2h,得到均匀水相;
步骤3,将嘧草醚、丙草胺、苄嘧磺隆、十二烷基苯磺酸钠与油性溶剂混合,之后在60-70℃的条件下加入增稠剂和粘结剂进行搅拌反应,反应温度为100℃-130℃,反应时间为30min-50min,之后再加入抗冻剂和分散剂,搅拌,搅拌时间为20min-35min,得到均匀油相;
步骤4,将油相与水相混合分散后得到高稳定性水稻田用除草剂。
8.根据权利要求7所述的一种高稳定性水稻田用除草剂的制备方法,其特征在于,所述步骤1中,具体为:将Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水混合均匀,得到混合盐溶液;将NaOH溶液与混合盐溶液分别滴定于Na2CO3溶液中控制滴定的速度,控制溶液pH在9-10之间,完成滴定后,使混合溶液加热升温至60-65℃,搅拌并陈化,冷却,采用去离子水将溶液洗涤至中性,干燥,研磨,过筛,即可得到类水滑石。
9.根据权利要求8所述的一种高稳定性水稻田用除草剂的制备方法,其特征在于,Cu(NO3)2·3H2O、Al(NO3)3·9H2O、Co(NO3)2·6H2O与水的质量比为1-2:2-3:0.04-0.12:50-100。
10.根据权利要求8所述的一种高稳定性水稻田用除草剂的制备方法,其特征在于,滴定时间为1-2.5h;陈化时间为5h-8h;过筛时,采用80-100目的筛网。
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