11种除草剂对小麦田恶性杂草阿拉伯婆婆纳的防除效果

Control effect of 11 herbicides on Veronica persica in wheat fields

针对我国黄淮海冬麦部分区域恶性杂草阿拉伯婆婆纳,开展了田间茎叶处理除草剂筛选试验,并比较了不同施药时期防效的差异。结果表明,防除阿拉伯婆婆纳,越冬前施用除草剂的防效优于返青期施药,可选择10%苯磺隆可湿性粉剂27.00 g/hm^(2),或56%2甲4氯钠可溶粉剂1260.00 g/hm^(2),或40%唑草酮水分散粒剂36.00 g/hm^(2),或25%辛酰溴苯腈乳油562.50 g/hm^(2),或4%啶磺草胺可分散油悬浮剂16.90 g/hm^(2)于2叶期左右进行茎叶喷雾,除草彻底,持效期长,药后150 d防效仍接近100%。

Field experiments were conducted to screen post-emergence(POST)herbicides to control Veronica persica Poir.,a malignant weed in winter wheat(Triticum aestivum L.)fields in Huang-Huai-Hai region.The control efficacy of herbicides applied at different growth stages of winter wheat was also compared.The results showed that the control efficacy of herbicides applied before the overwintering period of winter wheat was higher than that of herbicides applied during the green-returning period of winter wheat.For controlling V.persica,10%tribenuron-methyl WP at 27.00 g/hm^(2),56%MCPA-sodium SP at 1260.00 g/hm^(2),40%carfentrazone-ethyl WG at 36.00 g/hm^(2),25%bromoxynil octanoate EC at 562.50 g/hm^(2),or 4%pyroxsulam OD at 16.90 g/hm^(2)could be applied POST at the 2-leaf stage,which showed a good herbicidal effect and a long-lasting herbicidal effect,with nearly 100%control efficacy 150 days after treatment.