CN116831131A - 一种含有四唑吡氨酯的杀菌组合物 - Google Patents
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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
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
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Abstract
本发明涉及农药技术领域，提供一种杀菌组合物，所述杀菌组合物含有活性成分四唑吡氨酯和氨基寡糖素，其中四唑吡氨酯和氨基寡糖素的重量百分比为1:10～30:1。本发明还涉及所述的杀菌组合物用于防治黄瓜霜霉病等。
Description
技术领域
本发明属于农药技术领域，涉及一种含四唑吡氨酯和氨基寡糖素的杀菌组合物，用于防治黄瓜霜霉病等。
背景技术
四唑吡氨酯(Picarbutrazox)，是日本曹达公司开发的氨基甲酸酯类杀菌剂。目前四唑吡氨酯的作用机理不明确，杀菌剂国际抗性委员会(FRAC)将其归为独立的U17一类。四唑吡氨酯具有渗透和治疗作用，对卵菌纲病害有效，如盘霜霉属、腐霉属、假霜霉属和疫霉属等；其应用作物广泛，包括大豆、玉米、水稻、黄瓜、甜瓜、西瓜、番茄、莴苣、西兰花、甘蓝、大白菜、洋葱、萝卜、菠菜、马铃薯、葫芦，以及草坪等。
氨基寡糖素（oligosaccharins），属微生物代谢提取的一种具有抗病作用的低毒杀菌剂，氨基寡糖素能对一些病菌的生长产生抑制作用，影响真菌孢子萌发，诱发菌丝形态发生变异、孢内生化发生改变等。能激发植物体内基因，产生具有抗病作用的几丁酶、葡聚糖酶、保素及PR蛋白等，并具有细胞活化作用，有助于受害植株的恢复，促根壮苗，增强作物的抗逆性，促进植物生长发育。氨基寡糖素溶液可广泛用于防治果树、蔬菜、地下根茎、烟草、中药材及粮棉作物的病毒、细菌、真菌引起的病害。
现有技术中并没有四唑吡氨酯和氨基寡糖素组合使用的相关报道。
发明内容
本发明的目的在于，提出一种增效作用明显，能够延缓抗性、降低使用量的杀菌组合物。
为了解决上述问题，本发明所采用的技术方案是：
一种包含四唑吡氨酯和氨基寡糖素的杀菌组合物，活性成分包含四唑吡氨酯和氨基寡糖素，并且四唑吡氨酯和氨基寡糖素的质量配比为1:10～30:1。优选的，四唑吡氨酯和氨基寡糖素的质量配比为1:1～30:1。更优选的四唑吡氨酯和氨基寡糖素的质量配比为20:1。
杀菌组合物中活性成分的重量百分含量为5～80％。优选的活性成分的重量百分含量为10～50％。
所述的杀菌组合物在防治黄瓜霜霉病上具有显著效果，表现明显优于单剂的效果。
本发明的优点在于：两者复配，在一定范围内表现出显著的增效作用，能够减少用药量、降低成本；能够延缓抗性；安全性高，对环境友好环保。
实施方式
为了使本发明的目的、技术方案及优点更加清楚明白，本发明用以下具体实施例进行说明，但本发明绝非限于此。实施例中的百分比均为重量百分比。
实施应用例一：四唑吡氨酯和氨基寡糖素复配对黄瓜霜霉病的室内毒力测定试验
试验材料：
黄瓜霜霉病菌（Pseudoperonospora cubensis）；田间采集鉴定，室内活体培养保存。
测试方法：
参照《农药室内生测试验准则 杀菌剂》规定的杀菌剂防治黄瓜霜霉病试验（盆栽法）（NY/T 1156.7-2006）。待黄瓜长至8~10片真叶时，选择长势基本一致的健康无病盆栽黄瓜苗，供试验用。将新鲜孢子囊悬浮液均匀喷雾至黄瓜苗叶片背面，然后将黄瓜幼苗放置在20±2℃，光暗比12：12，相对湿度90%的人工气候箱内培养。24h后进行药剂茎叶喷雾处理(药剂浓度梯度根据预试试验确定)，待空白充分发病进行病情调查。
分级标准：
0级：无病斑；
1级：病斑面积占整个叶片面积的5%以下；
3级：病斑面积占整个叶片面积的6~10%；
5级：病斑面积占整个叶片面积的11~25%；
7级：病斑面积占整个叶片面积的26~50%；
9级：病斑面积占整个叶片面积的50%以上。
病情指数=∑（各级病叶数×相对级指数）/ （调查总叶数×最高级数值）×100
防治效果（%）=[（对照病情指数-处理病情指数）/ 对照病情指数 ]×100
用DPS数据处理软件计算试验结果，分别求出试验药剂单剂和不同配比混剂的毒力回归方程、EC50和EC90，比较增效情况，并根据孙云沛法计算复配药剂混剂的共毒系数(CTC)。共毒系数（CTC）计算公式如下：
实测毒力指数（ATI）=(标准药剂的EC50/供试药剂的EC50) × 100
理论毒力指数（TTI）=A 药剂的毒力指数 ×A 药剂在混剂中的百分含量+ B 药剂的毒力指数×B 药剂在混剂中的百分含量
共毒系数（CTC）= (ATI/TTI)×100
按照共毒系数(CTC)的划分标准，CTC≤80 为拮抗作用，80<CTC<120为相加作用，CTC≥120 为增效作用。
毒力测定结果：
表 1 四唑吡氨酯和氨基寡糖素对黄瓜霜霉病的室内联合毒力测定结果
从表1可以看出，四唑吡氨酯和氨基寡糖素在1∶10～30∶1的范围内复配时，共毒系数(CTC)均大于120，对黄瓜霜霉病表现出协同增效作用，特别是四唑吡氨酯和氨基寡糖素质量比为20∶1时，两者复配效果最佳。
综上所述，本发明所述的杀菌组合物四唑吡氨酯和氨基寡糖素复配，对黄瓜霜霉病有显著的增效作用，扩大杀菌谱，能够延缓抗性，对作物安全，能够减少用药量，对环境安全。
Claims (6)
1.一种含有四唑吡氨酯的杀菌组合物，其特征在于，活性成分包含四唑吡氨酯和氨基寡糖素，四唑吡氨酯和氨基寡糖素的质量配比为1:10～30:1。
2.根据权利要求1所述的杀菌组合物，其特征在于，四唑吡氨酯和氨基寡糖素的质量配比为1:1～30:1。
3.根据权利要求1所述的杀菌组合物，其特征在于，四唑吡氨酯和氨基寡糖素的质量配比为20:1。
4.根据权利要求1-3任意一项所述的杀菌组合物，其特征在于，活性成分的重量百分含量为5～80％。
5.根据权利要求4所述的杀菌组合物，其特征在于，活性成分的重量百分含量为10～50％。
6.根据权利要求1-5任意一项所述的杀菌组合物用于防治黄瓜霜霉病等。
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