45%滴丁·莠悬乳剂防除春玉米田杂草药效研究

室内生物活性测定结果表明,由2,4-D丁酯和莠去津复配而成的45%滴丁·莠悬乳剂具有明显的增效作用;田间小区试验施用该药3.3～4.5kg/hm2对春玉米田的稗草、反枝苋、苘麻等1年生单、双子叶杂草有良好的防除效果。持效期为60～70d,且对作物安全。与空白对照比较,增产明显,增产率为0.8%～1.8%。

Effect of 2,4-D Butylate+Atrazine on Controlling Weeds in Corn Field

The results of indoor bioassay showed that the 45% 2,4-D butelate+atrazine mixed had obvious synergism action. Field trials showed that 45% 2,4-D butelate+atrazine had good effect on barnyard-grass, green-foxlail, bacon weed and willowleaf knotweed. The fitting stage is pre-emerge to spray on soil face. The suitabale dosage ranges are 3.3～4.5 kg/hm2.It is safe to corn in this dosage ranges and can increase output 0.8%～2.5% than space contrast. The residual effect lasted for 60～70 days.