CN117296863A - 一种防治柑橘介壳虫的农药药剂 - Google Patents
一种防治柑橘介壳虫的农药药剂 Download PDFInfo
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- CN117296863A CN117296863A CN202311131677.4A CN202311131677A CN117296863A CN 117296863 A CN117296863 A CN 117296863A CN 202311131677 A CN202311131677 A CN 202311131677A CN 117296863 A CN117296863 A CN 117296863A
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- A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
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- A—HUMAN NECESSITIES
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- 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
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- A—HUMAN NECESSITIES
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- 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
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- A—HUMAN NECESSITIES
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- 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
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- A—HUMAN NECESSITIES
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- A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
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Abstract
本发明涉及一种防治柑橘介壳虫的农药药剂,有效成分为高效氯氰菊酯和呋虫胺,高效氯氰菊酯和呋虫胺的质量比为1:40‑40:1;所述农药药剂中以高效氯氰菊酯和呋虫胺的组合为唯一有效成分。本发明提供的防治柑橘介壳虫的农药药剂,对柑橘介壳虫具有显著的防治效果,活性成分简单,两种活性成分之间增效协同作用明显,对柑橘介壳虫具有快速响应性和高效防治作用,并且安全低毒。进一步地,本发明将所述农药药剂制成悬浮液组分,辅以阴离子型表面活性剂、纳米胶体颗粒和水溶性粘合剂等,提高农药有效成分在柑橘茎叶上的留滞时间、对抗因天气环境导致的有效成分流失问题,提高对柑橘介壳虫的毒杀功效,减小农药喷施剂量和环境污染问题。
Description
技术领域
本发明涉及农药技术领域,尤其涉及一种高效快速响应的防治柑橘介壳虫的农药药剂。
背景技术
柑橘是一种大家都比较喜欢的水果,柑桔介壳虫是一种常见的虫害,介壳虫的出现会导致柑桔的产量和质量严重下降。
柑橘介类害虫的共同特点是雌雄异形。雌虫有发达的口器、无翅、体壁坚韧或柔软,体外披有蜡粉或坚硬的蜡质介壳保护身体。一般喜阴湿,大多数寄生在叶背或枝叶茂密、空气不流通处。介类虫体小、密度高、危害十分严重。如吹绵介,以若虫和雌虫为害树干、枝、叶等,能诱发严重的烟煤病,使树势衰弱,枝枯叶落,甚至全株死亡;矢尖介、糠片介、黑点介以成虫、幼介寄生于柑橘枝梢、叶及果实上危害。被害后的枝梢枯萎、叶片卷曲干枯易脱落,造成树势衰退,果实受害停留于绿色状态,品质变劣,产量下降。近些年矢尖介在柑橘园为害加剧,10年生以上结果树90%遭受危害,被害植株轻的枝枯叶黄,似火烧一样,重的整株枯死。被害果实布满介点,外观受损,品质低劣,失去商品价值,直接影响经济效益。
柑橘上的介壳虫有很多种,常见的有矢尖蚧、红蜡蚧等,均以刺吸式口器刺吸汁液对农作物造成危害。这些介壳虫有不同的发生规律,防治难度因不同种类的介壳虫有没有若虫高峰、大龄若虫有没有坚强的保护蜡质等而有很大差别,对药剂选用自然有不同的要求。介壳虫防治的难点在于介壳虫每年能发生多代,中后期世代重叠,而且其大龄若虫和成虫体表有保护层,很难穿透这层物质发挥触杀作用。一般来说代介壳虫若虫孵化高峰比较明显,是用药防治的关键世代,以后各代世代重叠比较严重,用触杀性药很难取得良好效果。喹硫磷是目前柑橘生产上用来防治矢尖蚧和红蜡蚧的常用药种之一。该药与菊酯类农药的复配剂主要适合在介壳虫若虫孵化高峰期使用,错过这一时机,施药后难以取得好的效果。
目前比较常见的防治柑橘介壳虫的农药主要成分有苯甲酰脲或吡虫啉或它们与其他一些药的复配剂。但苯甲酰脲杀虫作用较慢,一般需要施药4-5天甚至7-15天害虫才会大量死亡,此时虫害已经形成规模,已造成一定经济损失;为此需要在幼虫低龄期施药,错过时机将导致不可挽回的损失。吡虫啉虽然对刺吸式口器害虫有效,但吡虫啉有叶片内吸性(被叶片吸收后传导),会有烧叶现象,易在作物叶片或果实中残留。因此,开发一种快速响应的、高效、低毒、安全的防治柑橘介壳虫的农药药剂,对防治柑橘介壳虫病害和保证橘农经济收益具有重要意义。
发明内容
(一)要解决的技术问题
鉴于现有技术的上述缺点、不足,本发明提供一种防治柑橘介壳虫的农药药剂,高效氯氰菊酯和呋虫胺协同发挥作用,对各个时期的介壳虫害都具有快速响应和高效灭杀功效,在几个小时内即使大量害虫死亡;喷施于叶片时相较于吡虫啉具有更少的内吸作用,减少柑橘烧叶的现象和作物果实中的残留,减少介壳虫抗药性的产生,不仅防治效果好且安全低毒。
(二)技术方案
为了达到上述目的,本发明采用的主要技术方案包括:
本发明提供一种防治柑橘介壳虫的农药药剂,其中,有效成分为高效氯氰菊酯和呋虫胺,高效氯氰菊酯和呋虫胺的质量比为1:40-40:1;所述农药药剂中以高效氯氰菊酯和呋虫胺的组合为唯一有效成分。
进一步优选地,所述农药药剂中,高效氯氰菊酯和呋虫胺的质量比为1:9-9:1。
进一步优选地,所述农药药剂中,高效氯氰菊酯和呋虫胺的质量比为3:7;或
高效氯氰菊酯和呋虫胺的质量比为4:6;或
高效氯氰菊酯和呋虫胺的质量比为5:5;或
高效氯氰菊酯和呋虫胺的质量比为6:4。
本发明中将高效氯氰菊酯和呋虫胺控制在上述质量比时,在控制成本的同时可显著提高组合物对柑橘介壳虫的灭杀共毒系数。
进一步优选地,所述农药药剂的剂型为悬浮剂。
进一步优选地,所述有效成分含量为10-30%,以质量百分数计。
进一步优选地,所述有效成分含量为15-24%,以质量百分数计。在该质量浓度下,若高效氯氰菊酯和呋虫胺按照5:5、4:6、3:7或6:4复配,不仅可兼顾短期防效和长期防效,还能最大程度地使有效成分发挥灭杀和防治作用,节省农药喷施量和成本。
进一步优选地,所述悬浮剂中还添加有纳米胶体颗粒;所述纳米胶体颗粒的粒径为5-50nm,为甲基丙烯酸聚合物纳米胶体颗粒;纳米胶体颗粒在悬浮剂中的浓度为纳米胶体颗粒在悬浮剂中的浓度为1.5-5%。悬浮剂中添加纳米胶体颗粒可以提高农药有效成分在悬浮剂中的分散度,延长农药有效成分在植物叶片或茎秆上的停留时间,进而延长农药持效期。
进一步优选地,所述悬浮剂中添加有丙二醇苯醚或丙二醇丙醚;添加量为2-8%。丙二醇苯醚或丙二醇丙醚被证实在常温下具有非常好的溶蜡效果,且能够溶于水中,对大龄若虫和成虫体表有保护层具有穿透能力发挥触杀作用。
进一步优选地,所述悬浮剂还含有润湿剂、阴离子表面活性剂、粘接剂、抗冻剂和水;按质量百分数计;
润湿剂为丁基萘磺酸钠、磺酰琥珀酸盐、烷基苯磺酸钠、烷基酚聚氧乙烯醚、烷基芳基磺酸盐、烷基硫酸盐、甲基萘磺酸钠甲醛缩合物及脂肪醇中至少一种,添加量为3-6%;阴离子表面活性剂为SDS或十二烷基苯磺酸钠;添加量为1-3%;粘接剂为葡萄糖、聚乙二醇、大豆卵磷脂、明胶、环糊精、淀粉、PVA及CMC中至少一种,添加量为1-4%;抗冻剂为丙二醇,添加量为3-8%;水为余量。
高效氯氰菊酯是非内吸性但具备触杀和胃毒作用的杀虫剂,通过与害虫钠通道相互作用破坏其神经系统,该杀虫剂主要用来防治农作物上发生的鳞翅目害虫。具有触杀和胃毒作用。杀虫谱广、击倒速度快,杀虫活性较氯氰菊酯高。高效氯氰菊酯不具有内吸性,适合用在蔬菜、果树上,无有害残留,不产生烧叶现象。
呋虫胺(dinotefuran)为最新一代超级烟碱类杀虫剂,具有触杀、胃毒、和根部内吸性强、速效高、持效期长4-8周(理论持效性43天)、杀虫谱广等特点,且对刺吸口器害虫有优异防效,并在很低的剂量即显示了很高的杀虫活性。在蔬菜、果蔬上作为叶面杀虫剂,可用于防治蚜虫、叶蝉、飞虱、蓟马、粉虱及其抗性品系,同时对鞘翅目、双翅目和鳞翅目和同翅目害虫有高效。两种药剂单独使用均有较好的杀虫效果,但对施药时间要求严格、施药时间有误差时灭虫效果变差,且单一的杀虫剂一种杀菌剂频繁使用,虫害易抗药性;此外,灭杀率和期有待进一步提高,进而减少橘农工作量增加经济收益。发明人经过研究发现,两种药剂复配后,具有明显的增效协同作用。
优选地,本发明防治柑橘介壳虫的农药药剂的剂型为悬浮剂。其中,悬浮剂流动性好,易于按照需要的比例进行稀释和雾化器喷施于柑橘叶片和茎秆上,具有分散性好,悬浮率高、稳定性好、使用方便的优点。将呋虫胺喷施于叶片上,叶片对呋虫胺的内吸性较小(呋虫胺具有较好的根部内吸性),相比于吡虫啉,不容易导致柑橘烧叶或果实中药物残留问题。
(三)有益效果
本发明通过将高效氯氰菊酯和呋虫胺复配,虽然高效氯氰菊酯和呋虫胺是现有技术已有杀虫剂,但是关于将两种成分按特定比例组合并以它们的组合作为唯一有效成分的介壳虫农药药剂尚未见报道。经发明人研究发现,高效氯氰菊酯和呋虫胺的组合能够有效防治柑橘介壳虫,并且经实验证明,两者组合具有明显的增效协同作用。尤其是当高效氯氰菊酯和呋虫胺的质量比为3:7、4:6、5:5、6:4时,共毒系数均达到了200以上,具有显著增效作用;灭杀响应速度快;在虫害高峰期,喷施后几个小时即可见大量死虫。
进一步的,本发明在悬浮剂中增加纳米胶体颗粒,以纳米胶体颗粒的吸附剂将农药有效成分吸附,由此可均匀地分散在农药药剂中,具有良好的悬浮性和稳定性,不易随着存放时间和温度而发生变质。此外,纳米胶体颗粒能够长时间借助粘接剂等成分附着在叶片正反面,抗雨水冲刷性好,被孵化出的幼虫食入后发挥灭杀作用。本发明的药剂具有悬浮率高、稳定性高的优势,有长达50-65天的持效期,对喷施时机无严格要求,均能高效杀虫灭虫。
进一步的,本发明还添加了一定量的丙二醇苯醚或丙二醇丙醚,低浓度可很好地分散于悬浮剂中,并且能够破坏大龄若虫和成虫体表的蜡质保护层,使有效成分进入到保护层内发挥触杀作用。实验证明,本发明的农药药剂以较少的药剂就能实现高效杀虫,减少药剂用量和喷施次数,减少药剂和劳动成本,能够实现安全且高效的柑橘介壳虫病害防治。
具体实施方式
为了更好的解释本发明,以便于理解,下面通过具体实施方式,对本发明作详细描述。本发明实施例中所使用的各类原药均可通过市售购买得到。
联合毒力测定:
试验材料取自介壳虫卵块(矢尖蚧和红蜡蚧)由华南农业大学昆虫生理研究室提供,于室内孵化后,用人工饲料饲养。在介壳虫产卵的前中期(8-14d)采卵,收集发育较一致的2代品系老熟幼虫化蛹,取6:00-8:00羽化的成虫供试。供药试剂为96%高效氯氰菊酯(Beta-cypermethrin)原药,由江苏蓝丰生物化工股份有限公司提供;98%呋虫胺(dinotefuran)原药,河南蓝天化工公司提供。
试验方法参照NY/T1156.16-2008,分别配制单剂母液,并按照本发明中不同配比进行复配,设置多个浓度梯度。
数据处理可通过数据处理软件及Excel进行数据统计分析,得出毒力回归方程、EC50、95%置信区间,依据孙云沛法计算出各药剂的毒力指数及混剂的共毒系数(CTC)。
实测毒力指数(ATI)=(标准药剂EC50/供试药剂EC50)×100
理论毒力指数(TTI)=A药剂毒力指数×混剂中A的百分含量+B药剂毒力指数×混剂中B的百分含量
共毒系数(CTC)=(混剂实测毒力指数(ATI)/混剂理论毒力指数(TTI))×100
当共毒系数大于120时,为增效作用;共毒系数为80-120时,为相加作用;当共毒系数小于80时,为拮抗作用。
测试所得悬浮剂对矢尖蚧和红蜡蚧的毒力,测试结果见表1和表2。
表1:悬浮剂对矢尖蚧的毒力测试结果
表2:悬浮剂对红蜡蚧的毒力测试结果
LC50(ppm) | ATI | TTI | CTC | |
高效氯氰菊酯(A) | 2.23 | 95.96 | / | / |
呋虫胺(B) | 2.14 | 100 | / | / |
A∶B=1:9 | 1.89 | 113.23 | 99.60 | 113.69 |
A∶B=2:8 | 1.79 | 119.55 | 99.19 | 120.53 |
A∶B=3:7 | 1.66 | 128.92 | 98.79 | 130.50 |
A∶B=4:6 | 1.63 | 131.29 | 98.39 | 133.44 |
A∶B=5:5 | 1.48 | 144.59 | 97.98 | 147.57 |
A∶B=6:4 | 1.64 | 130.49 | 97.58 | 133.73 |
A∶B=7:3 | 1.78 | 120.22 | 97.17 | 123.72 |
A∶B=8:2 | 1.84 | 116.30 | 96.77 | 120.18 |
A∶B=9:1 | 1.95 | 109.74 | 96.37 | 113.88 |
A∶B=1:20 | 1.97 | 108.63 | 99.80 | 108.84 |
A∶B=1:40 | 2.06 | 103.88 | 99.90 | 103.99 |
A∶B=20:1 | 2.03 | 105.42 | 96.16 | 109.63 |
A∶B=40:1 | 2.11 | 101.42 | 96.06 | 105.58 |
其中ATI为悬浮剂实测毒力指数,TTI为理论毒力指数,CTC为共毒系数。由上述测定结果可知,将高效氯氰菊酯和呋虫胺按质量比1:40-40:1复配时均表现出相加或增效作用;尤其是将高效氯氰菊酯与呋虫胺按质量比1:9-9:1复配时,两种成分对矢尖蚧和红蜡蚧的共毒作用相加或增效作用更明显;而在高效氯氰菊酯和呋虫胺复配比为2:8-8:2时,对矢尖蚧和红蜡蚧的共毒系数均大于120,表现出较好的增效作用;特别是高效氯氰菊酯和呋虫胺复配比为3:7、4:6、5:5或6:4时,复配药对柑橘矢尖蚧的共毒系数均大于160,复配药对红蜡蚧的共毒系数均大于130,说明该配比下两种农药复配的增效作用最为显著;且高效氯氰菊酯和呋虫胺的复配在矢尖蚧和红蜡蚧的共毒增效作用上表现出基本一致的规律。
实施例1
本实施例提供一防治柑橘介壳虫的农药药剂(30%悬浮剂),组成如下(均以质量百分数计):高效氯氰菊酯9%;呋虫胺21%(高效氯氰菊酯:呋虫胺=3:7);丁基萘磺酸钠(润湿剂)5%;SDS2%;PVA 3%;丙二醇4%;去离子水补至100%。将上述成分按配方的比例混合均匀,经高速剪切后得到成品。
实施例2
实施例2为将实施例1中的高效氯氰菊酯与呋虫胺质量比依次调整为4:6;其余组成参见实施例1。
实施例3
本实施例提供一防治柑橘介壳虫的农药药剂(12%悬浮剂),组成如下(均以质量百分数计):高效氯氰菊酯6%;呋虫胺6%(高效氯氰菊酯:呋虫胺=5:5);甲基萘磺酸钠甲醛缩合物(润湿剂)4%;十二烷基苯磺酸钠2%;PVA 3.5%;丙二醇6%;去离子水补至100%。将上述成分按配方的比例混合均匀,经高速剪切后得到成品。
实施例4
实施例4为将实施例3中的高效氯氰菊酯与呋虫胺质量比依次调整为6:4;其余组成参见实施例1。
实施例5
本实施例提供一防治柑橘介壳虫的农药药剂(15%悬浮剂),组成如下(均以质量百分数计):高效氯氰菊酯7.5%;呋虫胺7.5%(高效氯氰菊酯:呋虫胺=5:5);磺酰琥珀酸盐(润湿剂)5%;SDS2%;聚乙二醇3.5%;丙二醇4%;去离子水补至100%。将上述成分按配方的比例混合均匀,经高速剪切后得到成品。
实施例6
实施例6为将实施例5中治柑橘介壳虫的农药药剂改成10%悬浮剂,且高效氯氰菊酯与呋虫胺质量比依次调整为3:7,即高效氯氰菊酯3%;呋虫胺7%;其余组成参见实施例1。
实施例7
本实施例提供一防治柑橘介壳虫的农药药剂(20%悬浮剂),组成如下(均以质量百分数计):高效氯氰菊酯10%;呋虫胺10%(高效氯氰菊酯:呋虫胺=5:5);磺酰琥珀酸盐(润湿剂)5%;SDS2%;聚乙二醇3.5%;丙二醇4%;去离子水补至100%。将上述成分按配方的比例混合均匀,经高速剪切后得到成品。
实施例8
本实施例提供一防治柑橘介壳虫的农药药剂(24%悬浮剂),组成如下(均以质量百分数计):高效氯氰菊酯12%;呋虫胺12%(高效氯氰菊酯:呋虫胺=5:5);甲基萘磺酸钠甲醛缩合物(润湿剂)5.5%;SDS2%;PVA 3.5%;丙二醇4%;去离子水补至100%。将上述成分按配方的比例混合均匀,经高速剪切后得到成品。
实施例9
本实施例提供一防治柑橘介壳虫的农药药剂(18%悬浮剂),组成如下(均以质量百分数计):高效氯氰菊酯9%;呋虫胺9%(高效氯氰菊酯:呋虫胺=5:5);磺酰琥珀酸盐(润湿剂)5%;SDS2%;PVA 4%;丙二醇4%;加入甲基丙烯酸甲酯-甲基丙烯酸共聚物纳米胶体颗粒(粒径为5-50nm),使其含量为3%;去离子水补至100%。将上述成分按配方的比例混合均匀,经高速剪切后得到成品。
实施例10
本实施例提供一防治柑橘介壳虫的农药药剂(18%悬浮剂),组成如下(均以质量百分数计):高效氯氰菊酯9%;呋虫胺9%(高效氯氰菊酯:呋虫胺=5:5);磺酰琥珀酸盐(润湿剂)5%;SDS2%;PVA 4%;丙二醇4%;丙二醇丙醚8%;去离子水补至100%。将上述成分按配方的比例混合均匀,经高速剪切后得到成品。
实施例11
本实施例是在实施例10中将8%丙二醇丙醚替换成等量的丙二醇苯醚。其余组成参见实施例1。
实施例12
本实施例提供一防治柑橘介壳虫的农药药剂(20%悬浮剂),组成如下(均以质量百分数计):高效氯氰菊酯10%;呋虫胺10%(高效氯氰菊酯:呋虫胺=5:5);磺酰琥珀酸盐(润湿剂)5%;SDS2%;PVA 4%;丙二醇4%;加入甲基丙烯酸甲酯-甲基丙烯酸共聚物纳米胶体颗粒(粒径为5-50nm),使其含量为5%;丙二醇苯醚7%;去离子水补至100%。将上述成分按配方的比例混合均匀,经高速剪切后得到成品。
对比例1
将实施例1中的呋虫胺换成等量的吡虫啉,制得30%的高效氯氰菊酯·吡虫啉悬浮剂(3:7)。
对比例2
将实施例1中的呋虫胺换成等量的苯甲酰脲,制得30%的高效氯氰菊酯·苯甲酰脲悬浮剂(3:7)。
防治柑橘介壳虫的药效试验
试验如下进行:试验地点为江西宜春,时间为5月中。采用盆栽柑橘试验。喷药前每株接种柑橘介壳虫幼虫200头(每株接种矢尖蚧160头,红蜡蚧40头)。接种后2天喷药(对照株喷水)处理。以喷湿叶片正反面为准,每个处理4盆柑橘(取平均值)。于药后5h、7天、45天,调查叶片上的活虫数,计算虫口减退率和防治效果,对照株以相同频率喷施清水,且与实验组物理隔离。公式如下:
具体试验方法及数据如下:
虫口减退率(%)用F表示,F=(处理区药前活虫数-处理区药后活虫数)/处理区药前活虫数*100;
防治效果(%)用P表示,P=(处理区虫口减退率±对照区虫口减退率)/(100±对照区虫口减退率)*100;
表3:
通过上述药效试验测的数据可知,本发明实施例1-12的农药药剂对柑橘介壳虫具有很好的灭杀和防治效果,具有快速响应的特点,持效期很长,在喷药后45天依然保持很高的防效。而对比例1中有效的持效期较短,需要在一个种植周期内进行多次喷药;对比例2的药物组合物对介壳虫的响应速度较慢,不能快速灭杀害虫。与对比例1相比,本发明的农药药剂中高效氯氰菊酯不具有内吸传导性,呋虫胺有根内吸传导性但叶片内吸传导性较差,这可避免在高温天气喷施农药导致烧叶的问题,也减少果实内的农药残留。
其中尽管实施例5-8中农药药剂的有效成由实施例1-2的有效成分30%下降到15%、10%、20%、24%,喷药5h后防效虽然有明显下降,但7天防效和45天防效的长期防效并没有明显降低。因此,优选将悬浮剂有效成分在10-24%、更优选在15-24%间调节,可节省活性成分用量和成本,并达到理想的短期和长期防治效果。
实施例9、12中通过加入纳米胶体颗粒,利用纳米胶体颗粒吸附有效成分,既可以保证农药悬浮剂中有效成分的分布均匀性和稳定性,还能够长期附着在柑橘叶片上,使有效成分能够长期发挥灭杀作用,经过45天后,虫口减退率仍呈上升趋势;一些正处于孵化的幼虫经过数日孵化出后接触附着药物的叶片进而被触杀。纳米胶体颗粒的粘附作用还减少农药进入柑橘茎叶中的量,减少内吸性。
实施例10、11中添加低剂量的丙二醇丙醚或丙二醇苯醚,可加快破坏介壳虫体表的防护层,使农药快速发挥触杀功效,因此在喷药5h和7天时农药对介壳虫的防治效果更高。
实施例12与实施例8相比,尽管有效成分含量由24%下降到20%,但在助剂中添加纳米胶体颗粒和丙二醇苯醚,在提高短期防效的同时还保持长期的持效性。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。
Claims (9)
1.一种防治柑橘介壳虫的农药药剂,其特征在于,有效成分为高效氯氰菊酯和呋虫胺,高效氯氰菊酯和呋虫胺的质量比为1:40-40:1;所述农药药剂中以高效氯氰菊酯和呋虫胺的组合为唯一有效成分。
2.根据权利要求1所述的防治柑橘介壳虫的农药药剂,其特征在于,高效氯氰菊酯和呋虫胺的质量比为1:9-9:1。
3.根据权利要求1所述的防治柑橘介壳虫的农药药剂,其特征在于,
高效氯氰菊酯和呋虫胺的质量比为3:7;或
高效氯氰菊酯和呋虫胺的质量比为4:6;或
高效氯氰菊酯和呋虫胺的质量比为5:5;或
高效氯氰菊酯和呋虫胺的质量比为6:4。
4.根据权利要求1至3任一项所述的防治柑橘介壳虫的农药药剂,其特征在于,所述农药药剂的剂型为悬浮剂。
5.根据权利要求4所述的防治柑橘介壳虫的农药药剂,其特征在于,所述有效成分含量为10-30%,以质量百分数计。
6.根据权利要求5所述的防治柑橘介壳虫的农药药剂,其特征在于,所述有效成分含量为15-24%,以质量百分数计。
7.根据权利要求4所述的防治柑橘介壳虫的农药药剂,其特征在于,所述悬浮剂中还添加有纳米胶体颗粒;所述纳米胶体颗粒的粒径为5-50nm,为甲基丙烯酸聚合物纳米胶体颗粒;纳米胶体颗粒在悬浮剂中的浓度为纳米胶体颗粒在悬浮剂中的浓度为1.5-5%。
8.根据权利要求7所述的防治柑橘介壳虫的农药药剂,其特征在于,所述悬浮剂中添加有丙二醇苯醚或丙二醇丙醚;添加量为2-8%。
9.根据权利要求4或7或8所述的防治柑橘介壳虫的农药药剂,其特征在于,所述悬浮剂还含有润湿剂、阴离子表面活性剂、粘接剂、抗冻剂和水;润湿剂为丁基萘磺酸钠、磺酰琥珀酸盐、烷基苯磺酸钠、烷基酚聚氧乙烯醚、烷基芳基磺酸盐、烷基硫酸盐、甲基萘磺酸钠甲醛缩合物及脂肪醇中至少一种,添加量为3-6%;阴离子表面活性剂为SDS或十二烷基苯磺酸钠;添加量为1-3%;粘接剂为葡萄糖、聚乙二醇、大豆卵磷脂、明胶、环糊精、淀粉、PVA及CMC中至少一种,添加量为1-4%;抗冻剂为丙二醇,添加量为3-8%;水为余量。
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