摘要
为筛选出有效防治大豆田野黍的茎叶处理除草剂并探索适宜施药时期,采用盆栽试验研究了稀禾啶、烯草酮、高效氟吡甲禾灵、精吡氟禾草灵、精喹禾灵、喹禾糠酯对不同叶龄期野黍的防治效果。结果表明,防治一叶期至二叶一心期野黍可施用12.5%稀禾啶机油乳油131.25ga.i./hm2、240g/L烯草酮乳油90.00g a.i./hm2、10.8%高效氟吡甲禾灵乳油64.80g a.i./hm2、15%精吡氟禾草灵乳油135.00g a.i./hm2、5%精喹禾灵乳油71.25g a.i./hm2、40g/L喹禾糠酯乳油36.00g a.i./hm2,防治三叶期至三叶一心期野黍可施用12.5%稀禾啶机油乳油168.75g a.i./hm2、10.8%高效氟吡甲禾灵乳油97.20g a.i./hm2,仅12.5%稀禾啶机油乳油能有效防治四叶期以上野黍,施药量至少187.50g a.i./hm2。上述处理在施药后30d对野黍的株防效都超过90%。防治野黍的最佳时期为三叶期前,越晚施药,可供选择的除草剂种类越少,且需提高施药量。
The influences of different foliar-applied herbicides and application time on control effects against Eriochloa villosa （Thunb.） Kunth. were investigated through pot-culture method. The results showed that Eriochloa vil- losa （Thunb.） Kunth. could be controlled before 3 leaf age. The later herbicides applied, the worse control effects obtained, and the larger dosage needed. In order to control the 1 - 1.5 leaf age Eriochloa villosa （Thunb.） Kunth. , it should apply ： sethoxydim 12.5% EC, elethodim 240g/L EC, haloxyfop-P-methyl 10.8% EC, fluazifop-P-butyl 15% EC,quizalofop-P-ethyl 5% EC and quizalofop-P-tefuryl 40g/L. EC was applied in a dosage of 131.25g a. i./ hm^2 ,90.00g a. i./hm^2 ,64.80g a. i./hm^2 ,135.00g a. i./hm^2 ,71.25g a. i./hm^2 ,36.00g a. i./hm^2 ,respectively. To control the 3 -3.5 leaf age Eriochloa villosa （Thunb.） Kunth. ,sethoxydim 12.5% EC and haloxyfop-P-methyl 10.8% EC could be applied,the application rate was 168.75g a. i./hm^2 and 97.20g a. i./hm^2 ,respecti,vely. Se- thoxydim 12.5% EC could be exclusively used to control 4 and larger leaf age Eriochloa villosa （Thunb.） Kunth at the dosage of 187.50g a. i./hm^2.
出处
《作物杂志》
CAS
CSCD
北大核心
2013年第1期112-116,共5页
Crops
基金
东北农业大学青年启动基金项目(2011QNZ218)
关键词
野黍
茎叶处理除草剂
防治效果
Eriochloa villosa （Thunb.） Kunth.
Foliar-applied herbicide
Control effect
