LUO Chan,WANG Yu,CONG Ke-qiang,et al.Control Effects of Tembotrione·Nicosulfuron 23.5% OD Against Annual Weeds and Security in Maize Field[J].HEILONGJIANG AGRICULTURAL SCIENCES,2022,(05):40-44.[doi:10.11942/j.issn1002-2767.2022.05.0040]
23.5%环磺酮〖DK1〗·莠去津可分散油悬浮剂防治玉米田一年生杂草效果与安全性
- Title:
- Control Effects of Tembotrione·Nicosulfuron 23.5% OD Against Annual Weeds and Security in Maize Field
- 关键词:
- 23.5%环磺酮〖DK1〗·莠去津可分散油悬浮剂; 玉米; 杂草防效; 安全性
- Keywords:
- tembotrione·nicosulfuron 23.5% OD; maize; weed control; security
- 文献标志码:
- A
- 摘要:
- 为明确23.5%环磺酮·莠去津可分散油悬浮剂对玉米田一年生杂草的防效及最佳用量，采用随机区组试验设计方法进行田间药效试验。结果表明：23.5%环磺酮·莠去津可分散油悬浮剂在有效成分用量为564.0，634.5，705.0和1 269.0 g·hm-2的条件下，施药后30 d，对玉米田一年生杂草总平均株数防效分别为95.0%、97.2%、99.0%和100.0%；总草平均鲜重防效分别为97.5%、98.9%、99.6%和100.0%，与空白对照相比，玉米增产率分别为99.9%、102.7%、103.0%和103.9%。由此可知，23.5%环磺酮·莠去津可分散油悬浮剂在本试验剂量下，于玉米苗后、杂草2~4叶期进行茎叶喷雾处理，对玉米安全，除草效果好，有增产作用，可作为玉米田主要除草剂使用。推荐的23.5%环磺酮·莠去津可分散油悬浮剂防治玉米田一年生杂草的适宜施药剂量为160~180 mL·（666.7 m2)-1，即有效成分用量为564~705 g·hm-2。
- Abstract:
- In order to determine the control effect and optimal dosage of tembotrione·nicosulfuron 23.5% OD on annual weeds in maize field,the field efficacy test was carried out by randomized block test design method.The results showed that at 30 d after treatment,the plant quantity control effects of tembotrione ·nicosulfuron 23.5% OD at 564.0,634.5,705.0,1 269.0 g·ha-1 were 95.0%,97.2%,99.0%,100% and the fresh weight control effect were 97.5%,98.9%,99.6%,100.0%.Compared with the blank control,the maize yield increased significantly,and the yield increasing rates were 99.9%,102.7%,103.0%,103.9%,respectively.Therefore,tembotrione·nicosulfuron 23.5% OD can be used at 2 to 4 leaf stage of weeds in maize field by stems-leaves spraying.It is safe on maize and control effectively weeds with increasing production.So it can be used as the major herbicide in maize field.The recommended suitable spraying dose of tembotrione·nicosulfuron 23.5% OD is 160-180 mL·(666.7 m2)-1,and the dosage of active ingredient is 564-705 g·ha-1.
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备注/Memo
收稿日期：2022-01-16
基金项目：黑龙江省应用技术研究与开发计划重大项目(GA19B104-3)；黑龙江省农业科学院“农业科技创新跨越工程”专项(HNK2019CX14)。
第一作者：罗婵（1984-），女，硕士，助理研究员，从事农田杂草防治研究。E-mail:luochan1984528@126.com。
通信作者：郭玉莲（1970-），女，博士，研究员，从事杂草防除、除草剂应用技术及环境毒理学研究。E-mail:ylguo70@163.com。