红松苗圃地化学除草效果对比试验  

Comparative Test of Chemical Weeding Effect in Pinus koraiensis Nursery

作　　者：罗彦昕 Luo Yanxin(Liaoning Institute of Forest Management,Dandong 118000,China)

机构地区：[1]辽宁省森林经营研究所,辽宁丹东118000

出　　处：《防护林科技》2020年第12期44-45,63,共3页Protection Forest Science and Technology

摘　　要：为提高红松播种育苗除草效率,降低育苗成本,开展了不同药剂、不同浓度除草剂的除草效果试验。结果表明:红松播种后出苗前喷施割地草,施药后30 d除草率最高,浓度为1850 mL·hm^-2时除草效果最好,对出苗率无影响;苗期喷施割地草+莠去津、割地草+拿捕净混合除草剂的除草效果好于割地草除草剂。割地草+莠去津混合药剂浓度为450 mL·hm^-2+450 mL·hm^-2时,除草效果较好,无药害,可促进苗木生长。割地草及其混合药剂除草成本低,比人工除草节约支出77.7%~88.8%。In order to improve the efficiency of sowing and raising seedlings and weeding of Pinus koraiensis,and to reduce the cost of raising seedlings,experiments on the weeding effect of different pesticides and herbicides with different concentrations were conducted.Result shows that the herbicides were sprayed before seedling after sowing of Pinus koraiensis,and the herbicidal rate is the highest 30 days after application,and the herbicidal effect is the optimal when the concentration is 1850 mL·hm^-2,and has no effect on the emergence rate.Spraying goal(active ingredient:23.5%Oxyfluorfen Emulsifible oil)+atrazine and goal(active ingredient:23.5%Oxyfluorfen Emulsifible oil)+sethoxydim at the seedling stage has optimal weeding effect than goal(active ingredient:23.5%Oxyfluorfen Emulsifible oil).When the concentration of goal(active ingredient:23.5%Oxyfluorfen Emulsifible oil)+atrazine mixture is 450 mL·hm^-2+450 mL·hm^-2,the weeding effect is optimal,no phytotoxicity,and can promote the growth of seedlings.The cost of goal(active ingredient:23.5%Oxyfluorfen Emulsifible oil)and its mixture for weeding is low,which saves 77.7%-88.8%of expenditure compared with manual weeding.

关 键 词：红松苗圃地 除草剂 除草效果 

分 类 号：S723.1[农业科学—林木遗传育种]