摘要
为明确不同除草剂、不同施药时期对节节麦的防效和小麦生长的影响,以节节麦株率10%为研究对象,选用世玛、阔世玛、穗安3种除草剂分3个时期进行药效试验。结果表明,在小麦三叶期前施药,虽能有效抑制节节麦的生长,但对小麦的鲜质量也具有较明显的抑制作用,因而施用除草剂应于小麦三叶期后进行;大田药效试验分析表明,小麦分蘖初期和小麦拔节初期施药对节节麦的防效均极显著高于小麦分蘖盛期,但小麦拔节初期施药会显著影响小麦产量的提高;世玛、阔世玛对节节麦的防除效果优于穗安,二者防效均在95.7%以上,施药后小麦产量较对照分别增产17.6%和17.3%。田间可根据阔叶杂草的多少有选择性地施用世玛或阔世玛。
To study effect of herbicides to wheat growth and its spraying period to Aegilops Tauschii,10% Aegilops Tauschii was used as experimental material and three herbicides sigma,atlantis,and tribenuron-methyl were used and their three spraying times were designed in field plot experiment.The results showed that,though spraying before trefoil stage could inhibit growth of Aegilops Tauschii effectively,it inhibited wheat fresh weight considerably.It was why it must be sprayed after trefoil stage.The field experiment results showed that control effect of herbicides sprayed at early tillering stage or early jointing stage were significantly higher than at full tillering stage,but spraying at early jointing stage had negative effect to wheat yield improvement.Control effect of both sigma and atlantis was above 95.7% and was higher than that of tribenuron-methyl.After spraying of sigma or atlantis,wheat yield increased 17.6% and 17.3% than the control respectively.So sigma or atlantis was chosen depending on number of broad leaf weeds in the fields.
出处
《山西农业科学》
2011年第4期352-355,共4页
Journal of Shanxi Agricultural Sciences
基金
山西省科技攻关项目(20080312005-1)
关键词
除草剂
节节麦
小麦
防除效果
herbicides
Aegilops Tauschii
wheat
control effect
