CN116616303A - 含氯虫苯甲酰胺、杀虫单、噻呋酰胺的水稻种子处理剂及其应用 - Google Patents
含氯虫苯甲酰胺、杀虫单、噻呋酰胺的水稻种子处理剂及其应用 Download PDFInfo
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- CN116616303A CN116616303A CN202310592234.9A CN202310592234A CN116616303A CN 116616303 A CN116616303 A CN 116616303A CN 202310592234 A CN202310592234 A CN 202310592234A CN 116616303 A CN116616303 A CN 116616303A
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- rice
- seed treatment
- thifluzamide
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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
- 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
- A01N47/02—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 no bond to a nitrogen atom
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
- A01C1/08—Immunising seed
-
- 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
-
- 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
- A01N41/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom
- A01N41/02—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a sulfur atom bound to a hetero atom containing a sulfur-to-oxygen double bond
-
- 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
- A01N43/56—1,2-Diazoles; Hydrogenated 1,2-diazoles
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P3/00—Fungicides
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P7/00—Arthropodicides
- A01P7/04—Insecticides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Engineering & Computer Science (AREA)
- Plant Pathology (AREA)
- Pest Control & Pesticides (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Agronomy & Crop Science (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Insects & Arthropods (AREA)
- Toxicology (AREA)
- Microbiology (AREA)
- Mycology (AREA)
- Soil Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
本发明公开了一种含氯虫苯甲酰胺、杀虫单、噻呋酰胺的水稻种子处理剂及其在防治水稻稻纵卷叶螟和纹枯病中的应用,所述水稻种子处理剂是由具有杀虫活性的氯虫苯甲酰胺、杀虫单和具有杀菌活性的噻呋酰胺进行复配,开发的全新种子处理剂产品,兼有杀虫和杀菌功效,且杀虫杀菌效果均有增强效果,可有效防治水稻稻纵卷叶螟、纹枯病等,如传统茎叶喷雾防治相比,可有效减少药剂使用量及使用次数,对环境安全友好。
Description
技术领域
本发明属于水稻种子处理剂技术领域,具体为含氯虫苯甲酰胺、杀虫单、噻呋酰胺的水稻种子处理剂及其应用。
背景技术
在现代农业生产中,利用种衣剂对种子进行药剂处理是防治地下害虫及农作物土传、种传病害的经济简便的方法之一。种衣剂是一种用于作物或其他植物种子处理的、具有成膜特性的农药制剂,它能够在种子表面固化形成称为种衣的膜。种衣剂在土壤中吸水膨胀而不被溶解,允许种子正常发芽所需的水分和空气通过,所含的农药和种肥等物质缓慢释放,能够杀灭地下害虫、苗期害虫,具有防治苗期病害和系统性病害、提高种子发芽率、促进种苗健康生长等功效。相比常规的喷雾、喷粉和土壤处理,种子处理技术是植物病虫害防治中最经济、最有效的方法。在国外,种子处理剂品种较多,美国和欧洲种子处理剂占植保销售额的比例分别为20%、15%,防治对象也多元化。如在美国种子处理剂产品DermacorX-100(50%氯虫苯甲酰胺)、Cruiser Maxx TM(26.4%噻虫嗪)、Nipsit INSIDE TM(47.5%噻虫胺)是作为防治稻水象甲的主要的3种种子处理剂品种。在日本两款水稻种子处理产品FS(18%异噻菌胺)和Kirappu />FS(29.2%乙虫腈),分别防治苗期稻瘟病和稻水象甲。
中国水稻种衣剂的应用面积尚不足总种植面积的5%,主要由于国内登记的水稻种子处理剂除了数量少,在成分、剂型等方面也存在不足。国内学者利用化学药剂进行种子处理防治水稻种传病害和苗期病虫害研究较多,主要通过浸种或者拌种方式防治恶苗病、干尖线虫病、稻蓟马、苗期稻飞虱等。从中国农药信息网查新可知,截至2020年12月,国内登记在水稻上使用的种子处理剂产品有285个,登记的杀菌剂主要成分有咪鲜胺、咯菌腈、精甲霜灵、乙蒜素、福美双、氟唑菌苯胺、戊唑醇等,杀虫剂种子处理剂以丁硫克百威、噻虫嗪、吡虫啉、吡蚜酮等4种有效成分为主,防治对象主要为刺吸式害虫。
氯虫苯甲酰胺(chlorantraniliprole)是美国杜邦公司开发的第一个具有邻酰胺苯甲酰胺类化学结构的新型高效广谱杀虫剂,自进入我国市场后已成为防治水稻稻纵卷叶螟的重要替代品种,田间应用以茎叶喷雾为主。氯虫苯甲酰胺对稻纵卷叶螟的田间防效均达到80%以上,且持效期长。近几年随着对该药剂的研究深入,发现其是优异的自下而上内吸传导药剂,而这一特性可将其开发为种子处理药剂。
国外利用氯虫苯甲酰胺处理水稻种子已有诸多报道,已获商品化生产许可的农药产品X-100(50%氯虫苯甲酰胺悬浮种衣剂),由杜邦公司生产用于水稻种子处理防治稻水象甲,可显著减少稻水象甲种群数量。在国内,杜邦公司开发的/>50%种子处理悬浮剂已于2014年初获得在玉米作物上的登记,用于防治玉米上小地老虎等鳞翅目害虫,现已扩作登记在水稻上防治二化螟。同时正陆续登记在其他靶标害虫上。氯虫苯甲酰胺具有广泛的杀虫谱,能够用于多种作物,且持效性好、活性佳,毒性低,对环境生物安全,与市场主流杀虫剂产品无交互抗性且与多种大宗杀虫剂具有良好的相混性,受到国内外农药市场的广泛关注。
杀虫单是人工合成的沙蚕毒素的类似物,进入昆虫体内迅速转化为沙蚕毒素或二氢沙蚕毒素。该药为乙酰胆碱竞争性抑制剂,具有较强的触杀、胃毒和内吸传导作用,对鳞翅目害虫的幼虫有较好的防治效果。属仿生型农药,对天敌影响小,无抗性,无残毒,不污染环境,是综合治理虫害较理想的药剂。该药剂能有效地防治水稻、蔬菜、小麦、玉米、茶叶、果树等作物上的多种害虫,特别是对稻纵卷叶螟、二化螟、三化螟等有特效。对鱼类低毒,但对蚕的毒性大。在我国登记作物为水稻,用于防治螟虫。
噻呋酰胺属于噻唑酰胺类杀菌剂,具有强内吸传导性和长持效性。噻呋酰胺是琥珀酸酯脱氢酶抑制剂,由于含氟,其在生化过程中其竞争力很强,一旦与底物或酶结合就不易恢复。噻呋酰胺对丝核菌属、柄锈菌属、黑粉菌属、腥黑粉菌属、伏革菌属、核腔菌属等致病真菌均有活性,尤其对担子菌纲真菌引起的病害如纹枯病、立枯病等有特效。
病虫害虫长效、可持续绿色防控是未来植物保护的目标,药剂种子处理是可能实现该目标的技术之一。目前稻纵卷叶螟和纹枯病的防治仍然以茎叶喷雾为主,防治次数多,且在防治适期内无足够劳力,高频次的虫害防治也直接影响了水稻种植者的积极性。水稻生产上亟需一种成本低、操作简单的稻纵卷叶螟和纹枯病防控新技术及产品缓解上述难题。因此能否通过种子处理的方法,利用水稻种子萌发过程中的内吸作用,将药剂通过“生物抽提”方式进入到水稻植株内,并长时间携药,从而对稻纵卷叶螟和纹枯病达到防治目的,值得深入研究。
发明内容
发明目的:为了弥补现有技术的补足,本发明提供一种含有氯虫苯甲酰胺、杀虫单、噻呋酰胺的水稻种子处理剂及其应用,所述水稻种子处理剂是由具有杀虫活性的氯虫苯甲酰胺、杀虫单和具有杀菌活性的噻呋酰胺进行复配,开发的全新种子处理剂产品,兼有杀虫和杀菌功效,且杀虫杀菌效果均有增强效果,可有效防治水稻稻纵卷叶螟、纹枯病等,如传统茎叶喷雾防治相比,可有效减少药剂使用量及使用次数,对环境安全友好。
技术方案:为实现上述目的,本发明采用的技术方案为:
第一方面,本发明提供了一种水稻种子处理剂,所述水稻种子处理剂包含氯虫苯甲酰胺、杀虫单和噻呋酰胺。
作为一种实施方案,所述水稻种子处理剂中,氯虫苯甲酰胺、杀虫单和噻呋酰胺的质量比为1~15:1~15:1~30,优选为2~6:2~9:12~24,进一步优选为6:9:18。
作为一种实施方案,所述水稻种子处理剂中,氯虫苯甲酰胺、杀虫单和噻呋酰胺的总重量占水稻种子处理剂总重量的3%~60%,优选为16%~39%,进一步优选为27%~39%。
作为一种实施方案,所述水稻种子处理剂中还包括农业上可接受的农药助剂。
优选的,所述水稻种子处理剂的剂型为种子处理悬浮剂。
作为一种实施方案,所述农药助剂包括分散剂、成膜剂、增稠剂、消泡剂、防腐剂和警戒色。
在一些方案中,对于种子处理悬浮剂,所述分散剂选自脂肪醇聚氧乙烯醚磺酸盐、烷基酚聚氧乙烯醚、聚丙烯酸类、聚羧酸盐分散剂、烷基醇烷氧基化物中的一种或多种,本实施方案中优选脂肪醇聚氧乙烯醚磺酸盐;所述成膜剂选自壳聚糖、聚醋酸乙烯酯、羧甲基纤维素、阿拉伯树胶中的一种或多种,本实施方案中优选为壳聚糖;所述增稠剂选自黄原胶、阿拉伯胶、聚乙烯醇、聚丙烯酰胺等中的一种或多种,本实施方案中优选为黄原胶;所述消泡剂选自有机硅酮消泡剂;所述防腐剂选自苯甲酸、苯甲醛、苯甲酸钠、山梨酸钾和水杨酸钠中中的一种或多种,本实施方案中优选为苯甲酸钠;所述警戒色选自染色剂碱性玫瑰红。
作为一种实施方案,所述水稻种子处理剂包括以下重量百分比的原料:
氯虫苯甲酰胺1%~15%、杀虫单1%~15%、噻呋酰胺1%~30%、分散剂5%~10%、成膜剂0.1%~0.3%、增稠剂10%~15%、消泡剂0.2%~0.4%、防腐剂1%~2%和警戒色1%~2%,其余为水。
作为一种实施方案,所述水稻种子处理剂包括以下重量百分比的原料:
氯虫苯甲酰胺2%~6%、杀虫单2%~9%、噻呋酰胺12%~24%、分散剂5%~10%、成膜剂0.1%~0.3%、增稠剂10%~15%、消泡剂0.2%~0.4%、防腐剂1%~2%和警戒色1%~2%,其余为水。
最优选的,所述水稻种子处理剂包括以下重量百分比的原料:
氯虫苯甲酰胺6%、杀虫单9%、噻呋酰胺18%、分散剂6%、成膜剂0.2%、增稠剂15%、消泡剂0.2%、防腐剂1%和警戒色1%,其余为水。
第二方面,本发明提供了所述的水稻种子处理剂在防治水稻稻纵卷叶螟和纹枯病中的应用。
作为一种实施方案,将所述水稻种子处理剂与水稻种子进行拌种,阴干,即可。
优选的,所述水稻种子处理剂的用量为:每公斤水稻种子使用20-30毫升水稻种子处理剂。
有益效果:与现有技术相比,本发明具有以下优势:
(1)作为种子处理药剂对稻纵卷叶螟和纹枯病进行长效防控,有效控制时长可达70天以上;
(2)与单剂相比,氯虫苯甲酰胺与杀虫单复配具有协同增效作用,可降低氯虫苯甲酰胺用量,减少生产成本;
(3)氯虫苯甲酰胺与杀虫单复配对稻纵卷叶螟的作用机制有差异,可延缓稻纵卷叶螟抗性,增加药剂使用寿命;
(4)氯虫苯甲酰胺、杀虫单与噻呋酰胺配合使用,可解决水稻前中期主要的稻纵卷叶螟和纹枯病问题,减少药剂茎叶喷雾次数及用量。
具体实施方式
为了更加简洁明了的展示本发明的技术方案、目的和优点,下面结合具体实施例对本发明做进一步的详细描述。
实施例1
32%氯虫苯甲酰胺·杀虫单·噻呋酰胺种子处理悬浮剂的制备:
按质量百分比计,各组分配比为:氯虫苯甲酰胺6%、杀虫单2%、噻呋酰胺24%,分散剂6%、成膜剂0.2%、增稠剂15%、消泡剂0.2%、防腐剂1%和警戒色1%,其余水补足100%。
制备方法:各组分含量(按重量计)为氯虫苯甲酰胺6份、杀虫单2份、噻呋酰胺24份,分散剂脂肪醇聚氧乙烯醚磺酸盐6份、成膜剂壳聚糖0.2份、增稠剂黄原胶15份、消泡剂有机硅酮0.2份、防腐剂苯甲酸钠1份、警戒色染色剂碱性玫瑰红1份,加水补足至100份。将原药和助剂混合均匀先进行粗粉碎,将经过粗粉碎的混合物用定量泵连续地送入球磨机中球磨2~3小时,使粒径全部在3~5μm以下即可。
实施例2
34%氯虫苯甲酰胺·杀虫单·噻呋酰胺种子处理悬浮剂的制备:
按质量百分比计,各组分配比为:氯虫苯甲酰胺6%、杀虫单4%、噻呋酰胺24%,分散剂7%、成膜剂0.2%、增稠剂15%、消泡剂0.2%、防腐剂1%和警戒色1%,其余水补足100%。
制备方法:各组分含量(按重量计)为氯虫苯甲酰胺6份、杀虫单4份、噻呋酰胺24份,分散剂脂肪醇聚氧乙烯醚磺酸盐7份、成膜剂壳聚糖0.2份、增稠剂黄原胶15份、消泡剂有机硅酮0.2份、防腐剂苯甲酸钠1份、警戒色染色剂碱性玫瑰红1份,加水补足至100份。将原药和助剂混合均匀先进行粗粉碎,将经过粗粉碎的混合物用定量泵连续地送入球磨机中球磨2~3小时,使粒径全部在3~5μm以下即可。
实施例3
36%氯虫苯甲酰胺·杀虫单·噻呋酰胺种子处理悬浮剂的制备:
按质量百分比计,各组分配比为:氯虫苯甲酰胺6%、杀虫单6%、噻呋酰胺24%,分散剂8%、成膜剂0.2%、增稠剂15%、消泡剂0.2%、防腐剂1%和警戒色1%,其余水补足100%。
制备方法:各组分含量(按重量计)为氯虫苯甲酰胺6份、杀虫单6份、噻呋酰胺24份,分散剂脂肪醇聚氧乙烯醚磺酸盐8份、成膜剂壳聚糖0.2份、增稠剂黄原胶15份、消泡剂有机硅酮0.2份、防腐剂苯甲酸钠1份、警戒色染色剂碱性玫瑰红1份,加水补足至100份。将原药和助剂混合均匀先进行粗粉碎,将经过粗粉碎的混合物用定量泵连续地送入球磨机中球磨2~3小时,使粒径全部在3~5μm以下即可。
实施例4
32%氯虫苯甲酰胺·杀虫单·噻呋酰胺种子处理悬浮剂的制备:
按质量百分比计,各组分配比为:氯虫苯甲酰胺2%、杀虫单6%、噻呋酰胺24%,分散剂6%、成膜剂0.2%、增稠剂15%、消泡剂0.2%、防腐剂1%和警戒色1%,其余水补足100%。
制备方法:各组分含量(按重量计)为氯虫苯甲酰胺2份、杀虫单6份、噻呋酰胺24份,分散剂脂肪醇聚氧乙烯醚磺酸盐6份、成膜剂壳聚糖0.2份、增稠剂黄原胶15份、消泡剂有机硅酮0.2份、防腐剂苯甲酸钠1份、警戒色染色剂碱性玫瑰红1份,加水补足至100份。将原药和助剂混合均匀先进行粗粉碎,将经过粗粉碎的混合物用定量泵连续地送入球磨机中球磨2~3小时,使粒径全部在3~5μm以下即可。
实施例5
39%氯虫苯甲酰胺·杀虫单·噻呋酰胺种子处理悬浮剂的制备:
按质量百分比计,各组分配比为:氯虫苯甲酰胺6%、杀虫单9%、噻呋酰胺24%,分散剂10%、成膜剂0.2%、增稠剂15%、消泡剂0.2%、防腐剂1%和警戒色1%,其余水补足100%。
制备方法:各组分含量(按重量计)为氯虫苯甲酰胺6份、杀虫单9份、噻呋酰胺18份,分散剂脂肪醇聚氧乙烯醚磺酸盐10份、成膜剂壳聚糖0.2份、增稠剂黄原胶15份、消泡剂有机硅酮0.2份、防腐剂苯甲酸钠1份、警戒色染色剂碱性玫瑰红1份,加水补足至100份。将原药和助剂混合均匀先进行粗粉碎,将经过粗粉碎的混合物用定量泵连续地送入球磨机中球磨2~3小时,使粒径全部在3~5μm以下即可。
实施例6
33%氯虫苯甲酰胺·杀虫单·噻呋酰胺种子处理悬浮剂的制备:
按质量百分比计,各组分配比为:氯虫苯甲酰胺6%、杀虫单9%、噻呋酰胺18%,分散剂6%、成膜剂0.2%、增稠剂15%、消泡剂0.2%、防腐剂1%和警戒色1%,其余水补足100%。
制备方法:各组分含量(按重量计)为氯虫苯甲酰胺6份、杀虫单9份、噻呋酰胺18份,分散剂脂肪醇聚氧乙烯醚磺酸盐6份、成膜剂壳聚糖0.2份、增稠剂黄原胶15份、消泡剂有机硅酮0.2份、防腐剂苯甲酸钠1份、警戒色染色剂碱性玫瑰红1份,加水补足至100份。将原药和助剂混合均匀先进行粗粉碎,将经过粗粉碎的混合物用定量泵连续地送入球磨机中球磨2~3小时,使粒径全部在3~5μm以下即可。
实施例7
27%氯虫苯甲酰胺·杀虫单·噻呋酰胺种子处理悬浮剂的制备:
按质量百分比计,各组分配比为:氯虫苯甲酰胺6%、杀虫单9%、噻呋酰胺12%,分散剂5%、成膜剂0.2%、增稠剂15%、消泡剂0.2%、防腐剂1%和警戒色1%,其余水补足100%。
制备方法:各组分含量(按重量计)为氯虫苯甲酰胺6份、杀虫单9份、噻呋酰胺12份,分散剂脂肪醇聚氧乙烯醚磺酸盐5份、成膜剂壳聚糖0.2份、增稠剂黄原胶15份、消泡剂有机硅酮0.2份、防腐剂苯甲酸钠1份、警戒色染色剂碱性玫瑰红1份,加水补足至100份。将原药和助剂混合均匀先进行粗粉碎,将经过粗粉碎的混合物用定量泵连续地送入球磨机中球磨2~3小时,使粒径全部在3~5μm以下即可。
试验例1室内水稻发芽和出苗安全性测定
研究上述7个实施案例中氯虫苯甲酰胺、杀虫单和噻呋酰胺不同配比种子包衣后对种子发芽和出苗影响。
水稻品种:南粳9108,将水稻种子清水浸种48小时,捞出沥干12小时,每公斤水稻种子利用上述7个实施案例中药剂25毫升进行拌种包衣,阴干待用。利用湿纸床培养法检测各个实施案例对水稻种子发芽率影响,具体方法为将吸水纸垫入玻璃培养皿中,用水充分润湿后,倒去多于水,每皿放入100粒左右的水稻种子,各处理重复3次,置于培养箱35℃条件下24h,后调整为25℃。在第3天和7天分别记录种子发芽数和未发芽数,计算各处理种子3天发芽势与7天发芽率。同时测定各处理出苗率,具体方法为挑选100粒水稻种子,均匀点播于塑料秧盘中,盖上一层薄土,保持润湿状态放置室内暗化处理5天后,搬至室外育苗,发芽及出苗期间及时补水,在播种后的第15天调查各处理出苗情况。
发芽和出苗试验结果:
试验结果见表2。从表2可以看出,氯虫苯甲酰胺、杀虫单和噻呋酰胺在有效成份在不同配比条件下对种子发芽势、发芽率及出苗率无显著性影响。说明利用制备的氯虫苯甲酰胺·杀虫单·噻呋酰胺种子处理悬浮剂试验剂量条件下对水稻发芽和出苗安全。
表2氯虫苯甲酰胺·杀虫单·噻呋酰胺种子处理悬浮剂对水稻发芽和出苗的影响
药剂处理 | 3天发芽率% | 7天发芽率% | 15天出苗率% |
实施例1 | 87.13 | 92.68 | 88.77 |
实施例2 | 88.05 | 91.70 | 88.08 |
实施例3 | 88.66 | 90.54 | 88.26 |
实施例4 | 86.52 | 90.50 | 87.40 |
实施例5 | 86.21 | 92.02 | 87.43 |
实施例6 | 88.62 | 92.36 | 88.38 |
实施例7 | 86.99 | 91.81 | 90.03 |
清水对照 | 88.05 | 91.90 | 90.74 |
注:栏内数据均为三次重复平均数。下表同。
试验例2
选择实施例1-7进行拌种处理,同时设置20%氯虫苯甲酰胺悬浮剂、90%杀虫单可湿性粉剂及24%噻呋酰胺悬浮剂分别进行拌种处理作为对照,调查不同配比条件下药剂对拌种后70天稻纵卷叶螟和纹枯病的防治效果。
具体试验如下:
选择粳稻南粳9108作为试验材料,按照4kg每亩种子用量进行拌种处理。实验方法为将水稻种子经过48h浸泡后,放置12h沥干,将实施例1-7每kg种子分别按照25mL用药量均匀拌种,对照处理每kg种子分别利用20%氯虫苯甲酰胺悬浮剂10mL、90%杀虫单可湿性粉剂4g及24%噻呋酰胺悬浮剂120mL进行拌种处理,待药剂与种子充分接触后播种于秧田中。同时设置不用任何药剂处理的作为对照。
稻纵卷叶螟防效计算公式为:
白叶率(%)=(白叶数/调查总叶数)×100
保叶效果(%)=[(对照区白叶率-防治区白叶率)/对照区白叶率)]×100
纹枯病分级标准:水稻纹枯病病级记载标准:0级,全株无病;1级,第4片叶及其以下各叶鞘、叶片发病(以剑叶为第1片叶);3级,第3片叶及其以下各叶鞘、叶片发病;5级,第2片叶及其以下各叶鞘、叶片发病;7级,第1片叶及其以下各叶鞘、叶片发病;9级,全株发病,提早枯死。
稻纵卷叶螟试验结果如下:
各实施案播种70天后对稻纵卷叶螟均具有一定的控制效果。其中随着氯虫苯甲酰胺和杀虫单含量增加,田间保叶率减少,对应的保叶效果也增加。复配药剂与单剂相比,防效显著提高,说明氯虫苯甲酰胺和杀虫单复配具有协同增效作用,两者复配可相互促进水稻根系对药剂的吸收,在保证防效提前下,可减少药剂使用量。
表3氯虫苯甲酰胺·杀虫单·噻呋酰胺种子处理悬浮剂拌种70天后对稻纵卷叶螟的防治效果
药剂处理 | 白叶率% | 保叶效果% |
实施例1 | 0.46 | 81.45 |
实施例2 | 0.44 | 82.26 |
实施例3 | 0.43 | 82.66 |
实施例4 | 0.94 | 62.10 |
实施例5 | 0.31 | 87.50 |
实施例6 | 0.24 | 90.32 |
实施例7 | 0.36 | 85.48 |
20%氯虫苯甲酰胺SC | 0.76 | 69.35 |
90%杀虫单WP | 1.86 | 25.00 |
清水对照 | 2.48 | - |
纹枯病试验结果如下:
各实施案播种70天后对纹枯病均具有一定的控制效果。其中随着噻呋酰胺含量增加,田间纹枯病病指逐渐降低,病指防效增加。同时噻呋酰胺与氯虫苯甲酰胺和杀虫单进行复配,可增加噻呋酰胺杀菌作用,主要是由于氯虫苯甲酰胺和杀虫单可增加水稻根系对噻呋酰胺的吸收能力,促进其向上传导能力,因此在降低噻呋酰胺药剂含量情况下仍有较好的防治效果。
表4氯虫苯甲酰胺·杀虫单·噻呋酰胺种子处理悬浮剂拌种70天后对纹枯病的防治效果
药剂处理 | 病指% | 病指防效% |
实施例1 | 1.42 | 88.81 |
实施例2 | 1.75 | 86.21 |
实施例3 | 1.54 | 87.86 |
实施例4 | 1.2 | 90.54 |
实施例5 | 1.66 | 86.92 |
实施例6 | 1.16 | 90.86 |
实施例7 | 5.46 | 56.97 |
24%噻呋酰胺SC | 3.47 | 72.66 |
清水对照 | 12.69 |
试验结果表明,上述几种药剂配比处理水稻种子,在田间可有效防治稻纵卷叶螟和纹枯病的发生,且持效期长达70d以上。通过一次种子处理基本可以控制前中期稻纵卷叶螟和纹枯病的危害。
综上所述,以上几种氯虫苯甲酰胺、杀虫单与噻呋酰胺配比成的种子处理悬浮剂,通过该种衣剂处理水稻种子,能有效防治水稻前中期稻纵卷叶螟和纹枯病,减轻田间稻纵卷叶螟和纹枯病的虫源和菌源基数。大田按照上述配方用量处理水稻种子,拌种后70d基本上不用防治稻纵卷叶螟和纹枯病,而现有技术中水稻前中期针对稻纵卷叶螟和纹枯病需要多次叶片喷雾施药才能有效控制这两种病虫害,耗费大量人力物力,本发明水稻种子处理悬浮剂可有效减少农药使用量及使用次数。
应当指出,以上所述仅是本发明的优选实施方式,仅用以说明本发明的技术方案,而非对其限制,在不脱离本发明原理的前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
Claims (10)
1.一种水稻种子处理剂,其特征在于,所述水稻种子处理剂包含氯虫苯甲酰胺、杀虫单和噻呋酰胺。
2.根据权利要求1所述的水稻种子处理剂,其特征在于,所述水稻种子处理剂中,氯虫苯甲酰胺、杀虫单和噻呋酰胺的质量比为1~15:1~15:1~30,优选为2~6:2~9:12~24,进一步优选为6:9:18。
3.根据权利要求1所述的水稻种子处理剂,其特征在于,所述水稻种子处理剂中,氯虫苯甲酰胺、杀虫单和噻呋酰胺的总重量占水稻种子处理剂总重量的3%~60%,优选为16%~39%,进一步优选为27%~39%。
4.根据权利要求1所述的水稻种子处理剂,其特征在于,所述水稻种子处理剂中还包括农业上可接受的农药助剂;所述水稻种子处理剂的剂型为悬浮剂。
5.根据权利要求4所述的水稻种子处理剂,其特征在于,所述农药助剂包括分散剂、成膜剂、增稠剂、消泡剂、防腐剂和警戒色。
6.根据权利要求1所述的水稻种子处理剂,其特征在于,所述水稻种子处理剂包括以下重量百分比的原料:
氯虫苯甲酰胺1%~15%、杀虫单1%~15%、噻呋酰胺1%~30%、分散剂5%~10%、成膜剂0.1%~0.3%、增稠剂10%~15%、消泡剂0.2%~0.4%、防腐剂1%~2%和警戒色1%~2%,其余为水。
7.根据权利要求1所述的水稻种子处理剂,其特征在于,所述水稻种子处理剂包括以下重量百分比的原料:
氯虫苯甲酰胺2%~6%、杀虫单2%~9%、噻呋酰胺12%~24%、分散剂5%~10%、成膜剂0.1%~0.3%、增稠剂10%~15%、消泡剂0.2%~0.4%、防腐剂1%~2%和警戒色1%~2%,其余为水。
8.权利要求1-7任一项所述的水稻种子处理剂在防治水稻稻纵卷叶螟和纹枯病中的应用。
9.根据权利要求8所述的应用,其特征在于,将所述水稻种子处理剂与水稻种子进行拌种,阴干,即可。
10.根据权利要求9所述的应用,其特征在于,所述水稻种子处理剂的用量为:每公斤水稻种子使用20-30毫升水稻种子处理剂。
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