除草剂对水稻秧田幼苗的效应研究  

Effect of Different Herbicides on Japonica Rice Seedling

作　　者：周通[1] 陈书强[1] 杜晓东[1] 

机构地区：[1]黑龙江省农业科学院佳木斯水稻研究所,黑龙江佳木斯154026

出　　处：《黑龙江农业科学》2015年第12期55-59,共5页Heilongjiang Agricultural Sciences

基　　金："十二五"国家科技支撑计划资助项目(2014BAD01B03-03);黑龙江省应用技术研究与开发计划科技重大资助项目(GA14B102)

摘　　要：为了确定秧田化学除草科学方法,明确不同除草剂对秧田幼苗的生长和生理效果,选用3种药剂4个处理方式,在温棚秧田进行了小区试验。结果表明:10%千金+48%排草丹组合及90%高杀草丹两种剂型均有良好的除草效果,杂草防效>88%;4个除草剂处理对秧田秧苗的生长和生理指标中的NR活性均有显著抑制(Ρ<0.05),对根系活力只有10%千金+48%排草丹组合有显著抑制(Ρ<0.05);4个除草剂处理之间相比,90%高杀草丹低剂量封闭处理效果最好,在GS活性、可溶性光合产物含量、根系活力、叶龄、地下部鲜重等指标均高于对照和其它3个处理,并达统计显著水平(P<0.05)。In order to select a suitable herbicide and to understand the effects of herbicide on seedling growth potential and physiology in japonicarice,a randomized block plot experiment was conducted in the greenhouse by a design of three kinds of herbicides and four treatments.The results showed that both formula of 10% Cyhalofop-Butyl＋48%Bentazone and 90% Super-Saturn got a significant effect on weed control,and the control efficiency of all treatment were over 88%.Both high and low dose of 10% Cyhalofop-Butyl＋ 48%Bentazone had a significant inhibiting effects not only on NR and but also on root activity（P0.05）,while the two treatment of 90% Super-Saturn only significantly restrained NR activity（P0.05）.Among the four treatment of herbicides,lower rate of 90% Super-Saturn was the best choice,which demonstrated a significant increase in enzyme activity of NR,soluble photosynthetic products,root activity,leaf age and seedling fresh weight of underground part（P0.05）.

关 键 词：水稻 除草剂 生理特征 

分 类 号：S451.21[农业科学—植物保护]