30%噻虫嗪·咯菌腈·精甲霜灵FS对谷子白发病和粟叶甲的防治效果  

Control Effect of 30%Fludioxonil·metalaxyl-M·thiamethoxam on Millet Downy Mildew and Millet Oulema tristis

作　　者：张姼 柴晓娇 沈轶男 付颖 王显瑞 白晓雷 ZHANG Shi;CHAI Xiaojiao;SHEN Yinan;FU Ying;WANG Xianrui;BAI Xiaolei(Chifeng Institute of Agricultural and Animal Husbandry Sciences,Chifeng,Inner Mongolia 024031,China)

机构地区：[1]赤峰市农牧科学研究所,内蒙古赤峰024031

出　　处：《贵州农业科学》2021年第7期46-50,共5页Guizhou Agricultural Sciences

基　　金：国家重点研发计划项目(2019YFD1001700,2019YFD1001705-2);国家现代农业产业技术体系资助项目“国家谷子高粱产业技术体系”(CARS-06-13.5-B13)。

摘　　要：【目的】探明30%噻虫嗪·咯菌腈·精甲霜灵种子处理悬浮剂对谷子白发病和粟叶甲的防治效果及拌种适宜用量,为春谷病虫害防治提供参考依据。【方法】用30%噻虫嗪·咯菌腈·精甲霜灵种子处理悬浮剂FS 1.30 g、2.65 g和5.30 g拌1 kg谷子种子,以甲霜灵WS 2.00 g和60%吡虫啉FS 4.00 g拌种为药剂对照,以清水处理为空白对照,调查各处理粟叶甲卵和幼虫的数量,计算虫口密度和虫口减退率;调查谷子白发病的发病情况,计算病情指数和防治效果;比较各处理谷子的产量。【结果】30%噻虫嗪·咯菌腈·精甲霜灵FS拌种处理后粟叶甲防效在80%以上,谷子白发病防效在97%以上,产量在410.3~423.3 kg/667m_(2)。【结论】30%噻虫嗪·咯菌腈·精甲霜灵FS对谷子白发病和粟叶甲有较好的防治效果,适宜剂量为1.30~2.65 g拌1 kg谷子种子。【Objective】The control effect of 30%Fludioxonil·metalaxyl-M·thiamethoxam suspending agent for seed treatment on millet downy mildew and millet Oulema tristis and its appropriate dosage of seed dressing are studied to provide a reference for pest control of spring millet.【Method】T 1,T 2 and T 3 are 1 kg seeds treated with 1.30 g,2.65 g and 5.30 g 30%Fludioxonil·metalaxyl-M·thiamethoxam suspending agent respectively.T 4 and T 5 are 1 kg seeds treated with 2.00 g Metalaxyl(WS)and 1 kg seeds treated with 4.00 g 60%Imidacloprid(FS)separately.The blank control is seeds treated with clear water.The population density and population decrease rate of different treatments are respectively calculated by surveying their eggs and larvae of millet O.tristis.The disease index and control effect of different treatments are calculated by investigating the morbidity of millet downy mildew.The yield of different treatments is compared.【Result】The control effect of 30%Fludioxonil·metalaxyl-M·thiamethoxam suspending agent for seed treatment on millet downy mildew and millet O.tristis is above 97%and 80%separately and the yield is 410.3~423.3kg/667m_(2).【Conclusion】The appropriate seed dressing dosage of 30%Fludioxonil·metalaxyl-M·thiamethoxam suspending agent with the good control effect on millet downy mildew and millet O.tristis is 1.30~2.65 g for 1 kg millet seeds.

关 键 词：30%噻虫嗪·咯菌腈·精甲霜灵 谷子白发病 粟叶甲 防治 

分 类 号：S515[农业科学—作物学] S435.15