4％烟嘧磺隆减量对玉米田杂草防效及玉米产量的影响
Effects of Reduction Use of 4％ Nicosulfuron on Weeds Control and Yield in Corn Fieid
宋春林 1吴秋平 2韩成卫
作者信息
- 1. 济宁市农业科学研究院,山东济宁272031
- 2. 国家玉米产业技术体系济宁综合试验站,山东济宁272031
- 折叠
摘要
[目的]评价4％烟嘧磺隆悬浮剂减量施用在玉米田杂草防治上的可行性.[方法]以郑单958为试验品种,研究1500 mL/hm24％烟嘧磺隆、750 mL/hm2 4％烟嘧磺隆、750 mL/hm2 4％烟嘧磺隆+增效剂A(99％甲酯化大豆油)、750 mL/hm2 4％烟嘧磺隆+增效剂B (Silwet 408)4个除草剂减量施用对玉米田杂草防蒸及玉米产量的影响.[结果]添加增效剂能明显提高烟嘧磺隆除草剂的防效,较正常剂量或减量50％单施烟嘧磺隆处理药效提高了9.6％～27.0％,且施药后28d药效降幅也最小,增效剂Silwet 408对玉米的安全性明显优于99％甲酯化大豆油,且防效好,玉米产量较不除草对照提高了16.6％.[结论]试验结果为玉米田杂草治理和化学除草剂减量使用提供了理论依据.
Abstract
[Objective] To evaluate the feasibility of reducing doses of 4％ nicosulfuron suspending agent on weed control efficacy of corn.[Method] Using Zhengdan958 as the test material,four dosages treatment were applied including 1 500 mL/hm2 4％ nicosulfuron,750 mL/hm2 4% hicosulfuron,750 mL/hm2 4％ nicosulfuron + synergist A (99％ methylated soybean oil),750 mL/hm2 4％ nicosulfuron + synergist B (Silwet 408) to study effects on weeds control efficacy and yield in corn field.[Result] Results showed that spraying synergist A or B increased the weed control efficacy by 9.6％-27.0％ compared to the recommended and the 50％ reduced doses,and the percentage of decline of herbicidal efficacy were lower at 28d after herbicide treatment.However,synergist B was better than synergist A at not only the weed control effect,but did not produced damage to corn,and the yield of corn was 16.6％ higher compared to the uncontrolled weed treatment.[Conclusion] The study can provide theoretical basis for weeds control in corn field and reduetion use of herbicides.
关键词
玉米田/除草剂/烟嘧磺隆/杂草/防效Key words
Corn field/Herbicides/Nicosulfuron/Weeds/Control effect引用本文复制引用
基金项目
国家现代玉米产业技术体系专项(nycytx-02)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据