CN106900747A - 含亚磷酸钾的杀菌组合物 - Google Patents
含亚磷酸钾的杀菌组合物 Download PDFInfo
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- BZHCGFBZBPVRFE-UHFFFAOYSA-N monopotassium phosphite Chemical compound [K+].OP(O)[O-] BZHCGFBZBPVRFE-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
- A01N59/26—Phosphorus; Compounds thereof
-
- 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
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
- A01N43/42—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings condensed with carbocyclic rings
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- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
本发明提供了一种含亚磷酸钾的协同杀菌组合物,其特征在于包括活性成分A和B,其中,A为亚磷酸钾,B为Quinofumelin,还包括农药制剂加工中可以使用的助剂,制成常规的农药制剂,并应用于防治植物病害。
Description
技术领域
本发明属于农药应用技术领域,涉及一种农药组合物,具体的说是一种含亚磷酸钾的杀菌组合物,应用于防治植物病害。
背景技术
在农业生产过程中,植物病害发生严重,危害植物根、茎、叶等部位,以及果实、种子、块茎等繁殖器官,影响植物光合作用和植株生长,影响食用部位外观,使作物产量锐减,品质下降严重。病害发生严重时,导致作物绝收。因此,植物病害在生产实际上具有重要的防治意义,杀菌剂是防治植物病害的最为经济、快捷而有效的方法。
单一杀菌剂使用容易产生抗药性或防治谱有限,并不能很好地解决生产实际中的植物病害危害。混配杀菌剂具有可扩大防治谱、增强防效,延缓植物病原菌抗药性等优势,在生产实践中成为最受欢迎的应用形式。尤其是具有协同作用的杀菌剂,杀菌剂各有效组分间相互作用,使组合时效果优于单独使用效果的理论总和,因而在实际使用时可起到事半功倍的效果,更受使用者青睐。
亚磷酸钾应理解为具有式PO3的亚磷酸的钾盐,包括但不限于亚磷酸氢二钾(K2HPO3)、亚磷酸二氢钾(KH2PO3)或其混合物等。亚磷酸钾主要用于防治蔬菜和果树等多种作物上的卵菌病害,如马铃薯晚疫病、黄瓜霜霉病、葡萄霜霉病等,还可防治多种真菌病害,如苹果斑点落叶病、苹果黑星病、芒果炭疽病等。Quinofumelin是一种广谱性杀菌剂,对多种作物上的植物病害均表现出优良防效。
本发明经过大量的配方筛选试验研究发现,当亚磷酸钾与Quinofumelin任意组合时,显示出令人惊讶的杀菌效果,即表现出良好的协同作用,实际杀菌效果明显优于单独使用的理论总和,在生产上具有非常广泛的应用前景。
发明内容
本发明涉及协同杀菌组合物,包括活性成分A和B,所述的活性成分A为亚磷酸钾,所述的活性成分B为Quinofumelin。此外,还包括农药制剂加工中可以使用的助剂。
所述组合物可以特别良好的效果用于防治各种有用作物中的植物病害,所述有用作物包括但不限于常规育种作物、转基因作物、无性繁殖作物及无性繁殖材料、驯化栽培的野生植物等,特别适用于防治马铃薯、番茄、黄瓜、葡萄、莴苣、白菜、甘蓝、花椰菜、辣椒、草莓、苹果、小麦等作物病害。
可提及的具体实例为一些可用本发明的组合物防治的代表性植物病害,所述实例并不限于特定属种。需要说明的是本发明并不局限于以下具体实例,还可以以相同方式延伸到其它植物病害,括号注明其病原拉丁文学名:
马铃薯、番茄晚疫病(Phytophthora infestans),黄瓜霜霉病(Pseudoperonospora cubensis),葡萄霜霉病(Plasmopara viticola),莴苣、白菜、甘蓝、花椰菜霜霉病(Peronospora parasitica),洋葱霜霉病(Peronospora destructor),辣椒疫病(Phytophthora capsic),草莓疫病(Phytophthora cactorum),苹果斑点落叶病(Alternaria alternata)、黑星病(Venturia inaequalis),芒果炭疽病(Colletotrichumgloeosporioides),观赏植物腐霉病(Pythium splendens),镰刀菌病害(Fusarium spp.):如小麦赤霉病(Fusarium graminearum)、大豆根腐病(Fusarium oxysporum)等,丝核菌病害(Rhizoctonia spp.):如小麦纹枯病(Rhizoctonia cerealis)、马铃薯黑痣病(Rhizoctonia solani),番茄、辣椒早疫病(Alternaria solani),黄瓜白粉病(Sphaerotheca fuliginea),黄瓜、菜豆、葡萄、番茄灰霉病(Botrytis cinerea)等。
为了解决上述技术问题,本发明采用如下技术方案予以实现:
本发明组合物组分A和B可以任意比例混配,通常一种活性成分含量高于其余活性成分,优选混合比是100:1至1:100或50:1至1:50。
本发明组合物可通过将活性成分与农药制剂加工中可以使用的助剂混合,用已知方法制备为常规的制剂,如水剂、悬浮剂、可溶粉剂、可溶粒剂、颗粒剂等。制剂中一般含有0.1~95%重量的活性成分,优选0.5~90%重量的活性成分。
农药制剂加工中可以使用的助剂包括但不限于:水、溶剂、填料、各种表面活性剂(乳化剂、分散剂、润湿剂等)、黏结剂、成膜剂、着色剂、防冻剂、增稠剂、助悬剂、崩解剂、消泡剂、渗透剂、增效剂、稳定剂、壁囊材料、pH调节剂、防腐剂等。并且,适当地,为了提高对特定作物耐受力,可适当添加安全剂;或者有时为了促进作物生长发育,可在混配组合物中添加常规农业肥料,制成药肥混剂。这些助剂都是农药制剂中常用或允许使用的成分,并无特别限定,可选择一种或一种以上助剂构成,具体成分和用量根据配方要求通过简单的试验确定。
所述组合物各种应用剂型的生产工艺均属现有已知技术,在此不再赘述。
本发明组合物可以多种方法使用,如兑水以常规方式喷雾使用,或直接撒施或沟施,或拌毒土撒施等,于植物播种时、出苗前、出苗后营养生长期和生殖生长期均可使用。用药量可在较宽范围内变化,并且取决于土壤的状况、使用方法、作物、待防治的植物病害种类及苗龄大小、当时的气候条件及其他因素。本发明组合物通常以0.001~0.5kg活性成分混合物/公顷的用量施用,更为优选地,以0.01~0.3kg活性成分混合物/公顷的用量施用。
本发明与现有技术相比,具有如下技术效果:
1、混配组合物具有良好的协同作用,应用效果明显优于单剂理论效果总和,即具有超叠加作用,可更好地控制植物病害发生危害;
2、混配组合物活性成分之间在植物病害防治谱上具有良好的互补性,可很好扩大防治谱,综合有效控制各种植物病害发生危害;
3、混配组合物具有良好的协同作用,可减少药剂使用量,降低使用成本和环境污染,提高对作物的安全性。
具体实施方式
以下给出本发明的具体实施例,需要说明的是本发明并不局限于以下具体实施例,凡在本申请技术方案基础上做的等同变换均落入本发明的保护范围。
实施例1:15%水剂
配方组成为:活性成分A为5%,活性成分B为10%,表面活性剂烷基酚聚氧乙烯醚6%,水补足至100%。
制备方法为:将所有物料投入调制釜中,搅拌溶解至完全透明,化验合格后,转移至储罐灌装。
实施例2:26%悬浮剂
配方组成为:活性成分A为10%,活性成分B为16%,润湿剂马来酸甲基丙烯酸酯环氧乙烷与环氧丙烷共聚嵌段4%,分散剂木质素磺酸盐3%,防冻剂丙三醇5%,增稠剂黄原胶0.3%,水补足至100%。
制备方法为:将活性成分和润湿剂、分散剂、防冻剂和水投入搅拌釜中,充分搅拌后,将物料抽入砂磨机中进行充分研磨,研磨完成后,抽入高速剪切机中,加入增稠剂后,进行高速剪切,剪切完成后即制得悬浮剂。
实施例3:50%可溶粉剂
配方组成为:活性成分A为15%,活性成分B为35%,润湿剂脂肪醇聚氧乙烯醚3%,分散剂对甲氧基脂肪酰胺基苯磺酸4%,填料膨润土补足至100%。
制备方法为:将活性成分和各助剂混合均匀,投入机械粉粹机中进行初粉粹,之后经气流粉碎机粉碎,再混合均匀,即制得可溶粉剂。
实施例4:70%可溶粒剂
配方组成为:活性成分A为25%,活性成分B为45%,润湿剂磺基琥珀酸辛酯钠盐4%,分散剂木质素磺酸盐5%,填料硅藻土补足至100%。
制备方法为:将所有物料混合均匀后,经气流粉碎机粉碎,再次混合均匀,然后,加入一定量的水将此混合物捏合,挤压造粒,经干燥筛分,即得到可溶粒剂。
实施例5:7%颗粒剂
配方组成为:活性成分A为4%,活性成分B为3%,润湿剂烷基酚聚氧乙烯醚0.8%,分散剂烷基酚聚氧乙烯醚甲醛缩合物磺酸盐0.9%,着色剂炭黑0.2%,填料凹凸棒土补足至100%。
制备方法为:将所有物料混合均匀后,加入一定量的水将此混合物捏合,挤压造粒,经干燥筛分,即得到颗粒剂。
应用效果实例:
1、试验方法
(1)对马铃薯晚疫病菌、辣椒疫病菌和番茄灰霉病菌的生物活性
参照《NYT 1156.2-2006农药室内生物测定试验准则杀菌剂第2部分:抑制病原真菌菌丝生长试验平皿法》进行。
以马铃薯晚疫病菌(Phytophthora infestans)、辣椒疫病菌(Phytophthoracapsic)或番茄灰霉病菌(Botrytis cinerea)为供试病原菌。
从田间采集发病叶片,实验室分离纯化,接种在培养基上培养,培养至菌落直径达6cm左右备用(马铃薯晚疫病菌用燕麦培养基培养,辣椒疫病菌和番茄灰霉病菌用PDA培养基培养)。
培养基、去离子水、划线三角瓶、培养皿、枪头、打孔器、接种器等灭菌后备用。
在无菌操作条件下,将预先融化冷却至约50℃的灭菌培养基定量加入灭菌划线三角瓶中,使培养基与划线处(60mL)平齐,然后从低浓度到高浓度依次吸取600μL药液,分别加入上述三角瓶中,充分摇匀,后等量倒入4个培养皿(Φ9cm)中,制成5个浓度梯度带药平板。并设不含药剂的处理作空白对照。将在培养基上培养好的病原菌,在无菌条件下用灭菌打孔器(Φ5mm)自菌落边缘同一圆周上切取菌饼,用接种器将菌饼接种于含药平板中央,菌丝面朝下,盖上皿盖,于培养箱中黑暗培养(马铃薯晚疫病菌于19℃培养,辣椒疫病菌和番茄灰霉病菌于25℃培养)。根据空白对照皿中菌丝生长情况,用卡尺测量菌落直径。每个菌落采用十字交叉法垂直测量,取其平均值,计算对菌丝生长的抑制率。
按公式(1)、(2)计算各处理浓度对菌丝生长抑制率,单位为百分率(%),计算结果保留小数点后两位。
D=D1-D2…………………………………………(1)
式中:
D—菌落增长直径,单位为毫米(mm);
D1—菌落直径,单位为毫米(mm);
D2—菌饼直径,单位为毫米(mm)。
式中:
I—菌丝生长抑制率,单位为百分数(%);
D0—空白对照菌落增长直径,单位为毫米(mm);
Dt—药剂处理菌落增长直径,单位为毫米(mm)。
(2)对黄瓜霜霉病菌的生物活性
参照《NYT 1156.7-2006农药室内生物测定试验准则杀菌剂第7部分:防治黄瓜霜霉病试验盆裁法》进行。
以黄瓜霜霉病菌(Pseudoperonospora cubensis)为供试病菌,实验室接种在黄瓜幼苗上扩繁备用。
以黄瓜感病品种“长春密刺”为供试作物,实验室盆栽,幼苗长至4片~6片真叶期备用。
选取扩繁用发病叶片,用4℃蒸馏水洗下叶片背面霜霉病菌孢子囊,洗脱液用双层纱布过滤,制成浓度为1×105个孢子囊/mL的孢子囊悬浮液,将其喷雾接种于“长春密刺”黄瓜苗叶片背面(霜霉病菌易侵染叶片背面),黑暗保湿培养24h,将配制好的药液均匀喷施于叶面至全部润湿。然后在17~22℃、12h光暗交替条件下,相对湿度为90%以上的条件下培养。每处理设置4次重复,每重复5盆,每盆2株,并设不含药剂的处理作空白对照。当空白对照发病率达到80%以上时,分级调查处理发病情况。计算各处理的病情指数和防治效果。
病情指数按式(3)计算,防治效果按式(4)计算,计算结果保留小数点后两位。
式中:
X—病情指数;
Ni—各级病叶数;
i—相对级数值;
N—调查总叶数;
9—最高级数值。
式中:
P—防治效果,单位为百分数(%);
CK—空白对照病情指数;
PT—药剂处理病情指数。
(3)对黄瓜白粉病菌的生物活性
参照《NYT 1156.11-2008农药室内生物测定试验准则杀菌剂第11部分:防治瓜类白粉病试验盆裁法》进行。
以黄瓜白粉病菌(Sphaerotheca fuliginea)为供试病菌,从田间黄瓜病叶上采集,室内接种在新鲜黄瓜幼苗上扩繁备用。
以黄瓜感病品种“新泰密刺”为供试作物,实验室盆栽,幼苗长至2片~4片真叶期备用。
选取扩繁用发病叶片,用加有少量0.1%吐温-80的纯净水,从病叶上洗脱新鲜孢子,洗脱液用双层纱布过滤,制成浓度为1×105个孢子/mL的孢子悬浮液,将其喷雾接种于“新泰密刺”黄瓜叶片上。接种24h后,将配制好的药液均匀喷施于叶面至全部润湿。待药液自然风干,移至人工气候箱培养,在20℃、12h光暗交替条件下培养。每处理设置4次重复,每重复5盆,每盆2株,并设不含药剂的处理作空白对照。待空白对照病叶率达到80%以上时,分级调查各处理发病情况。计算各处理的病情指数和防治效果。
病情指数按式(5)计算,防治效果按式(4)计算,计算结果保留小数点后两位。
式中:
X—病情指数;
Ni—各级病叶数;
i—相对级数值;
N—调查总叶数;
11—最高级数值。
(4)组合物预期活性判定
组合物预期活性借鉴拜耳、先正达、陶氏等跨国农药企业制剂专利中判定组合物预期活性的方法(COLBY法):COLBY,S.R.:“Calculating Synergistic and AntagonisticResponses of Herbicide Combinations”,Weeds 15,p.20~22,1967进行。
组合物预期活性按(6)式计算:
式中:
X—杀菌剂1用量为P时的防效或抑制率;
Y—杀菌剂2用量为Q时的防效或抑制率;
E—杀菌剂1与杀菌剂2按上述比例混用后的实际防效或抑制率,即混配杀菌剂的实际活性;
E0—杀菌剂1用量为P+杀菌剂2用量为Q时的理论防效或抑制率,即混配杀菌剂的预期活性。
当E>E0时,即如果混配药剂的实际活性超过所计算的预期活性,则该组合就具有超叠加作用,即协同作用。
2、试验结果
试验结果详见表1~5,可见,活性成分A(亚磷酸钾)与活性成分B(Quinofumelin)混配后,实际活性均大于预期活性,说明亚磷酸钾与Quinofumelin混配具有协同作用。
表1亚磷酸钾(K2HPO3)与Quinofumelin混配对马铃薯晚疫病菌的联合作用效应
表2亚磷酸钾(K2HPO3)与Quinofumelin混配对辣椒疫病菌的联合作用效应
表3亚磷酸钾(KH2PO3)与Quinofumelin混配对番茄灰霉病菌的联合作用效应
表4亚磷酸钾(K2HPO3)与Quinofumelin混配对黄瓜霜霉病菌的联合作用效应
表5亚磷酸钾(KH2PO3)与Quinofumelin混配对黄瓜白粉病菌的联合作用效应
Claims (5)
1.杀菌组合物,其特征在于,包括活性成分A和B。
2.如权利要求1所述的杀菌组合物,其特征在于,所述的活性成分A为亚磷酸钾。
3.如权利要求1所述的杀菌组合物,其特征在于,所述的活性成分B为Quinofumelin。
4.如权利要求1、2或3所述的杀菌组合物,其特征在于,除了活性成分A和B外,还包括农药制剂加工中可以使用的助剂。
5.如权利要求1、2、3或4所述的杀菌组合物,其特征在于,将其应用于防治植物病害。
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Application publication date: 20170630 |
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