摘要
为明确纳米杀菌剂15%苯甲·吡唑酯ME对苹果黑星病和锈病的最低有效防治剂量,设置由低到高5组不同剂量处理进行田间防效测定。结果表明,纳米杀菌剂15%苯甲·吡唑酯ME对苹果黑星病和锈病均有较好的防治效果。针对苹果黑星病,0.5 mL/L处理防效最高,末次药15 d和30 d后的防治效果均在95%以上,药剂效益为7.93;0.3 mL/L和0.4 mL/L处理次之,防治效果为74.52%~85.70%,药剂效益分别为11.64和8.93,分别是0.5 mL/L处理药剂效益的1.47倍和1.13倍。各处理对苹果锈病的防治效果均能达到80%以上,其中0.5 mL/L处理防效最高,两次调查防效均为100%,药剂效益为8.33;0.1 mL/L处理的防效最低,两次调查防效分别为86.16%和83.94%,药剂效益为34.95,是0.5 mL/L处理药剂效益的4.2倍。以减少农药施用量,确保防治效果和提高经济效益为原则,筛选出15%苯甲·吡唑酯ME对苹果黑星病的最低有效防治剂量为0.3 mL/L;对苹果锈病的最低有效防治剂量为0.1 mL/L。如遇苹果黑星病和锈病同时大发生年,可直接喷施0.3 mL/L纳米农药15%苯甲·吡唑酯ME进行防治。
To determine the minimum effective control dosage of nano-pesticide 15%difenoconazole·pyraclostrobin ME for apple scab and rust,five groups of different doses from low to high were set up to determine the field control effect.The results showed that the nano-pesticide 15%difenoconazole·pyraclostrobin ME had a good control effect on apple scab and rust.For apple scab,the control effect of 0.5 mL/L treatment was the best,with more than 95%of control effect after 15 days and 30 days of last application,and the pesticide benefit was 7.93.The control effects of 0.3 mL/L and 0.4 mL/L treatments were 74.52%-85.70%,and the pesticide benefit was 11.64 and 8.93,respectively,which were 1.47 times and 1.13 times that of 0.5 mL/L treatment,respectively.The control effects of all treatments on apple rust could reach more than 80%.Among them,the control effect of 0.5 mL/L treatment was the highest,and the control effect was 100%in two surveys,with the pesticide benefit of 8.33.The control effect of 0.1 mL/L treatment was the lowest,at 86.16%and 83.94%in two surveys,respectively,and the pesticide efficiency was 34.95,which was 4.2 times that of 0.5 mL/L treatment.In order to reduce the amount of pesticide application,ensure the control effect and improve the economic benefit,0.3 mL/L and 0.1 mL/L was chosen as the minimum effective control dose of 15%difenoconazole·pyraclostrobin ME for apple scab and rust,respectively.In the case of need to control apple scab and rust at the same time,0.3 mL/L nano-pesticide difenoconazole·pyraclostrobin 15%ME can be directly applied.
作者
李金峰
姜延军
史广亮
韩菊红
李青梅
梁冰
胡珍娣
柳建伟
LI Jinfeng;JIANG Yanjun;SHI Guangliang;HAN Juhong;LI Qingmei;LIANG Bing;HU Zhendi;LIU Jianwei(Pingliang Academy of Agricultural Sciences,Pingliang,Gansu,744000,China;Nanjing Shansi Ecological Technology Co.Ltd.,Nanjing,Jiangsu,210012,China)
出处
《中国南方果树》
北大核心
2025年第4期168-171,共4页
South China Fruits
基金
甘肃省陇原青年英才项目(甘人社通[2023]142号)
平凉市科技计划项目(平科任[2021]23号)
江苏省重点研发计划(现代农业)(BE2021303)
甘肃省科技计划项目(23CXGL0004)资助。
