摘要
以农药的速效性、持效性及对幼苗的安全性为判定指标,筛选适合山银花白粉病的用药技术。比较3种药剂5%壳寡糖(氨基寡糖素)水剂、10%己唑醇悬浮剂、50%硫悬浮剂及其复配使用对山银花白粉病第1次施药后7天、第2次施药后7天以及14天的防治效果。在第1次施药后7天、第2次施药后7天以及14天,不同药剂处理间山银花白粉病的发病率和病情指数显著低于清水对照,防治效果以5%壳寡糖水剂+10%己唑醇悬浮剂处理最好,在第2次施药后14天达到89.13%。50%硫悬浮剂和5%壳寡糖水剂+50%硫悬浮剂防治效果较差,但其防治效果仍分别达到81.71%和80.80%。选取的3种药剂及其复配对山银花白粉病均具有较好的防治效果,生物农药壳寡糖与己唑醇复配使用时可以降低己唑醇使用量,且效果最优。
Based on the efficacy, persistence and seedling safety of the pesticide, the drug application technology suitable for flos lonicerae powdery mildew was screened. The effects of 5% chitosan oligosaccharide water agent, 10% hexaconazole suspension, 50% sulfur suspension and their combination on powdery mildew of flos lonicerae were compared 7 days after the first application, and 7 days and 14 days after the second application. At 7 days after the first application, 7 days and 14 days after the second application, the incidence and disease index of powdery mildew treated with different agents were significantly lower than those treated with water. The control effect was the best under the treatment of 5% chitosan oligosaccharide water agent+10% hexaconazole suspension, and reached 89.13% 14 days after the second application. The control effects of50% sulfur suspension and 5% chitosan oligosaccharide water+ 50% sulfur suspension were relatively poor,but could still reach 81.71% and 80.80%, respectively. All the three agents and their compound combinations have a good control effect, and the dosage of hexaconazole could be reduced when the biological pesticide chitosan oligosaccharide is combined with hexaconazole, and the combination works the best.
作者
翟杨
刘武
刘彬
谭汝晴
刘上寿
吴念庆
杨美森
曾粮斌
Zhai Yang;Liu Wu;Liu Bin;Tan Ruqing;Liu Shangshou;Wu Nianqing;Yang Meisen;Zeng Liangbin(Institute of Bast Fiber Crops,Chinese Academy of Agricultural Sciences,Changsha 410205;Xupu Senxin Characteristic Agriculture Development Co.,Ltd.,Xupu Hunan 419315;Xiushan County Chinese Herbal Medicine Industry Center,Chongqing 409900)
出处
《中国农学通报》
2021年第22期116-119,共4页
Chinese Agricultural Science Bulletin
基金
国家重点研发计划“高端农用海洋生物免疫制品开发”(2018YFC0311300)
湖南省科技创新计划“山银花优质高效栽培关键技术集成与示范”(HHS2017zy05)。
关键词
灰毡毛忍冬
湖南省
寡糖复配
防效
减量增效
Lonicera macranthoides
Hunan Province
chitosan oligosaccharide complex
control effect
downsizing for efficiency
