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在人工气候室内,观察环境条件对镇草宁[N-(phospho-nomethyl) glycine]防除狗牙根药效的影响。结果表明,在强光湿润条件下的药效显著高于土壤干旱与微弱光照。最初两周内,药效即有显著差异。随着处理浓度的增加或时间的延长,这一差异趋于缩小。在本试验的环境条件中,微弱光照为药效发挥的限制因子。环境条件与处理浓度对狗牙根的复发有明显的影响。光照愈弱,复发能力愈小。4%镇草宁处理后,可以控制狗牙根不复发。不同苗龄的狗牙根对镇草宁的反应也不相同。老苗的死亡率最低而复发率最高。因此,随着苗龄的增长,处理浓度与用药量需相应增加。
In an artificial climate chamber, the effects of environmental conditions on the drug control efficacy of Bermudagrass were studied. The results showed that the efficacy under bright light wet conditions was significantly higher than the soil drought and weak light. Within the first two weeks, there is a significant difference in efficacy. This difference tends to narrow as the concentration of treatment increases or the time increases. In the environmental conditions of this experiment, weak light is a limiting factor for efficacy. Environmental conditions and treatment concentration of bermudagrass have a significant impact on the recurrence. Weak light, the smaller the recurrence capacity. 4% Zhencao Ning treatment, you can control bermudagrass recurrence. Different ages of bermudagrass of the town grass Ning response is not the same. Miao mortality and the lowest recurrence rate. Therefore, with the growth of seedling age, the treatment concentration and dose should be increased accordingly.