三氟苯嘧啶防治单季稻主害代稻飞虱效果及安全性研究  

Effects and Safety of Triflumezopyrim on Controlling Rice Planthoppers in Single Cropping Rice

作　　者：赵敏[1] 张国忠[1] 何丽娟[1] 黄元杰 申屠兰欣 方筱轩 方雪勇 ZHAO Min;ZHANG Guozhong;HE Lijuan;HUANG Yuanjie;SHENTU Lanxin;FANG Xiaoxuan;FANG Xueyong(Agricultural Technology Extension Center of Tonglu,Tonglu,Zhejiang 311500,China;Agricultural Office of Fenshui Town,Fenshui,Zhejiang 311519,China;Hangzhou Borun Ecological Agriculture Development Co.,Ltd.,Baijiang,Zhejiang 311522,China)

机构地区：[1]浙江省桐庐县农业技术推广中心,浙江桐庐311500 [2]浙江省桐庐县分水镇农业办公室,浙江分水311519 [3]杭州博润生态农业开发有限公司,浙江百江311522

出　　处：《生物灾害科学》2022年第2期131-135,共5页Biological Disaster Science

摘　　要：【目的】为明确新型杀虫剂三氟苯嘧啶防治五(3)代稻飞虱主害代和六(4)代褐飞虱主害代的防控效果及对稻飞虱主要天敌的安全性。【方法】采用不同施药方式在不同施用期施用三氟苯嘧啶对单季稻五(3)代稻飞虱主害代和六(4)代褐飞虱主害代的防效及主要天敌安全性的田间试验。【结果】采用背负式电动喷雾器在不同施用期喷施20%三氟苯嘧啶WG 120 g/hm^(2)对单季稻五(3)代稻飞虱主害代低龄若虫为主期与六(4)代褐飞虱主害代高龄若虫为主期的速效性,以低龄若虫为主期的防效较佳,药后5 d校正防效分别为96.5%与65.2%,药后10 d与12 d校正防效达高效,分别为99.7%与97.9%,且持效性均较好、控效期均较长,药后14~50 d防效均在99.0%~100%。采用植保无人机喷施一次20%三氟苯嘧啶WG 120 g/hm^(2)对单季稻五(3)代稻飞虱主害代中龄若虫为主期表现出速效性好,药后3 d校正防效为94.0%,药后7~14 d校正防效高达99.3%~99.7%,且持效性较好、控效期也较长,药后21 d校正防效仍达94.3%,药后35 d、45 d控效均达100%。20%三氟苯嘧啶WG处理区与喷清水对照区相比,对稻飞虱主要天敌:蜘蛛数量的减少相对较安全,但对黑肩绿盲蝽数量的减少相对欠安全。【意义】研究结果可以为浙西北单季稻区推广使用三氟苯嘧啶防控单季稻五(3)代稻飞虱主害代或六(4)代褐飞虱主害代,以及为大面积推广应用植保无人机喷施三氟苯嘧啶有效防控单季稻五(3)代稻飞虱主害代提供科学技术依据。[Objective]This study was conducted to clarify the control effect of a new insecticide triflumezopyrim on the fifth(3)generation of rice planthoppers and the sixth(4)generation of Brown Planthoppers as well as its safety against the main natural enemies of rice planthoppers.[Methods]a field experiment was conducted to study the control effect and the safety of the main natural enemies of five(3)generations of rice planthopper and six(4)generations of brown planthopper in single cropping rice by applying triflumezopyrim at different application stages with different spraying methods.[Results]Knapsack Electric Sprayer spraying of 20%triflumezopyrim WG 120 g/hm2 was applied to the fifth(3)generation of rice planthoppers in different periods.The effective period was mainly in the primary stage of the sixth(4)generation of the age nymph of the brown planthoppers.The control effect was better at the primary stage of the young nymph.After the treatment,the 5 d control effect was 96.5%and 65.2%,respectively,and the effective control of 10 d and 12 d after the treatment was effective.The control effect was 99.7%and 97.9%,respectively,with good persistence and a long control period.The control effects were 99.0%-100%from 14 to 50 days after the treatment.The plant protection UAV was used to spray 20%triflumezopyrim WG 120 g/hm2 once,which showed a good quick effect on the middle-aged nymphs of the main damage generation of rice planthopper in the fifth(3)generation of single cropping rice.The corrected control effect was 94.0%in 3 days after application,99.3%-99.7%in 7-14 days after application,with good persistence and a long control period.The corrected control effect was still 94.3%in 21 days after application,and 100%in 35 and 45 days after application.Compared with the control area sprayed with clean water,the reduction of the number of spiders,as well as the main natural enemy of rice planthoppers,were relatively safe,but it was relatively unsafe for the reduction of the number of black shoulder green stink bugs.[Sig

关 键 词：单季稻 稻飞虱 三氟苯嘧啶 

分 类 号：S435.112.3[农业科学—农业昆虫与害虫防治]