药剂拌种对春油菜白粉病和茎象甲的防效及对油菜产量的影响  

Effects of different pesticide seed dressing on powdery mildew and Ceutorhynchus asper of spring rape and its yield

作　　者：郑果[1,4] 黄勇 黄青岩 王立 李继平[1,4] 惠娜娜 刘卫红[3] ZHENG Guo;HUANG Yong;HUANG Qingyan;WANG Li;LI Jiping;XI Nana;LIU Weihong(Institute of Plant Protection,Gansu Academy of Agricultural Sciences,Lanzhou 730070,China;Gansu Linxia Academy of Agricultural Sciences,Linxia 731100,China;Gansu Plant Protection andPlant Inspection Station,Lanzhou 730020,China;Scientific Observing and ExperimentalStation of Crop Pests in Tianshui,Ministry of Agriculture,Tianshui 741299,China)

机构地区：[1]甘肃省农业科学院植物保护研究所,兰州730070 [2]甘肃省临夏州农业科学院,临夏731100 [3]甘肃省植保植检站,兰州730020 [4]农业部天水作物有害生物科学观测试验站,天水741299

出　　处：《植物保护》2019年第5期269-274,共6页Plant Protection

基　　金：国家重点研发计划(2018YFD0200900);甘肃省特色作物产业技术体系(GARS-TSZ-2)

摘　　要：为明确不同药剂拌种对春油菜出苗率、病虫害防效及产量的影响,本文在3种不同种植密度下,针对春油菜白粉病、油菜茎象甲,选择25 g/L咯菌腈FSC、600 g/L吡虫啉SC、30%噻虫嗪SC、600 g/L吡虫啉SC+25 g/L咯菌腈FSC、30%噻虫嗪SC+25 g/L咯菌腈FSC进行了拌种处理试验。结果表明,各拌种处理对春油菜的出苗有一定的影响,其中600 g/L吡虫啉SC、30%噻虫嗪SC、600 g/L吡虫啉SC+25 g/L咯菌腈FSC、30%噻虫嗪SC+25 g/L咯菌腈FSC拌种对春油菜出苗的影响大于25 g/L咯菌腈FSC拌种;600 g/L吡虫啉SC+25 g/L咯菌腈FSC、30%噻虫嗪SC+25 g/L咯菌腈FSC拌种对白粉病和茎象甲的防效均高于单剂拌种;600 g/L吡虫啉SC+25 g/L咯菌腈FSC拌种,对春油菜白粉病的最高防效可达59.3%,30%噻虫嗪SC+25 g/L咯菌腈FSC拌种对油菜茎象甲最高防效可达69.2%。白粉病病情指数与春油菜种植密度呈正相关,拌种防效随密度增加而降低,综合产量分析,最佳种植密度为28.5万~34.5万株/hm^2。In order to clarify the effects of different seed dressing on seedling emergence rate and yield of spring rape and control efficacy against Erysiphe cruciferarum and Ceutorhynchus asper,the seed dressing experiments with fludioxonil 25 g/L FSC,imidacloprid 600 g/L SC,thiamethoxam 30%SC,imidacloprid 600 g/L SC+fludioxonil 25 g/L FSC and thiamethoxam 30%SC+fludioxonil 25 g/L FSC were carried out under three different planting densities.The results showed that different seed dressing treatments had certain effects on the emergence of spring rape,among which the effects of imidacloprid 600 g/L SC,thiamethoxam 30%SC,imidacloprid 600 g/L SC+fludioxonil 25 g/L FSC and thiamethoxam 30%SC+fludioxonil 25 g/L SC were greater than that of fludioxonil 25 g/L FSC.The control effects of imidacloprid 600 g/L SC+fludioxonil 25 g/L FSC and thiamethoxam 30%SC+fludioxonil 25 g/L FSC on E.cruciferarum and C.asper were higher than that of single agent.Imidacloprid 600 g/L SC+fludioxonil 25 g/L FSC had the highest control effect on E.cruciferarum with the efficacy of 59.3%,and thiamethoxam 30%SC+fludioxonil 25 g/L FSC had the best effect on C.asper with the efficacy of 69.2%.The disease index of plant infected by E.cruciferarum was positively correlated with the planting density of spring rape.The control effect of seed dressing decreased with the increase of planting density.According to the comprehensive yield analysis.the optimal planting density was 285 000-345 000 plants/hm^2.

关 键 词：春油菜 拌种 白粉病菌 茎象甲 防效 

分 类 号：S435.654[农业科学—农业昆虫与害虫防治]