安徽农业科学2017，Vol.45Issue(34)：152-154,159,4.
胡麻不同生长时期施用除草剂对杂草的防效及胡麻的增产效果
Control and Yield Increasing Effects of Herbicides Applied at Different Growth Periods of Flax
摘要
Abstract
[Objective] The aim was to research the optimum spraying period of herbicide spraying on stems and leaves of flax seedling and weeds at one time to control broadleaf weeds and grass weeds in flax field.[Method] Spraying device was WS-16PA type knapsack hand sprayer,and spraying volume was 675 L/hm2,and 40％ MCPA-sodium and bromoxynil octanoate EC 1 500 mL/hm2 + 108 g/L haloxyfop-P EC 1 350 mL/hm2 (dosage of preparation) was sprayed on stems and leaves 9f flax seedling in plant height of 2-5 cm,5-10 cm,10-15 cm and 15-20 cm and weeds.The safety on flax of herbicide was investigated in different time after pesticide application,and the plant and fresh weight control effects on broadleaf weeds and grass weeds in flax field were investigated after 45 days treatment,and flax yield were determined after flax ripening.[Resuit] Phytotoxicity on flax of herbicide spraying at stems and leaves of flax seedling in plant height of 5-10 cm was lighter;the plant and fresh weight control effects on broadleaf weeds were 93.72％ and 95.13％,respectively,after 45 days treatment,and on grass weeds were 95.68％ and 98.73％,respectively;the flax yield was 2 240.0 kg/hm2;the yield increasing rate was 3.86％ compared with manual weeding,and was 265.24％ compared with CK.[Conclusion] The optimum spraying period of 40％ MCPA-sodium and bromoxynil octanoate EC 1 500 mL/hm2 + 108 g/L haloxyfop-P EC 1 350 mL/hm2 spraying on stems and leaves of flax seedling and weeds at one time to control broadleaf weeds and grass weeds in flax field was 5-10 cm of flax seedling in plant height.关键词
除草剂/胡麻/生长时期/杂草防效/增产效果Key words
Herbicide/Flax/Growth period/Weeds control effect/Yield increasing effect分类
农业科技引用本文复制引用
王玉灵,胡冠芳,余海涛,牛树君,李玉奇,赵峰..胡麻不同生长时期施用除草剂对杂草的防效及胡麻的增产效果[J].安徽农业科学,2017,45(34):152-154,159,4.基金项目
国家胡麻产业技术体系草害防控岗位(CARS-17-GW-7). （CARS-17-GW-7）
