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选用2,4—滴丁酯除莠剂,在川西北荒芜人工草地上,按一定浓度配药喷雾,对处理后不同时间的草地随机取样,选取6个样方进行莠草杀灭效果实测。结果表明:该除草剂对八种典型莠草有显著防除效果;且在喷药后一定时间内,随时间的延长,除莠效果进一步提高。鉴于川西北草地莠草现状及化学除莠效益,建议大面积推广使用这种高效、低毒、低残毒除莠剂。
The 2, 4-dibutyl-butyl ester herbicide was used to disperse the grassland at different concentrations on a deserted artificial grassland in northwestern Sichuan Province. A random sample was taken from the grasslands at different times after treatment. Six plots were selected for the actual killing effect. The results showed that the herbicide had a significant control effect on eight typical alfalfa grasses; and the effect of alfalfa removal was further improved with the prolonged time after spraying. In view of the current situation of grassland weeds in northwestern Sichuan and the effectiveness of chemical crop removal, it is recommended to promote the use of this highly efficient, low-toxicity, low-residue herbicide.