不同浓度2,4-滴异辛酯对谷子田间阔叶杂草防治效果的研究

Control Effect of 2,4-D Isooctyl Ester Herbicide at Different Concentrations on Broadleaf Weeds in Millet Field

本研究采用小区田间试验的方法,比较了不同浓度2,4-滴异辛酯除草剂对谷子生长的安全性、阔叶杂草的防除效果及产量的影响,为筛选适宜谷子生产的除草剂最佳使用浓度提供科学依据。结果表明,当除草剂浓度达到80 mL/667 m2时,除草剂对谷子有轻微的药害,随着浓度的升高,药害逐渐严重,同时产量相比对照有所下降。除草剂处理浓度为40 mL/667 m2时与其它高浓度处理的株防效无显著差异,防除效果达90.16%,没有药害,且产量最高,故从绿色环保、经济等综合方面考虑此浓度为谷子生产中使用的最佳浓度。

To evaluate the control effect of 2,4-D isooctyl ester herbicide at different concentrations on broadleaf weeds in millet field,a plot field experiment was conducted to assess the effect of herbicide concentration on millet growth,weed control,and yield.The results showed that 80 mL/667 m2 herbicide concentration caused slight phytotoxicity to millet,with an increase of the concentration in concentration leading to more severe phytotoxicity and decreased yield.However,40 mL/667 m2 herbicide concentration showed no significant difference from the other high-concentration treatments,with a 90.16%control effect,no phytotoxicity,and the highest yield.This concentration is therefore recommended as the best for millet production.