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本文系1981～1982年的研究结果,目的是为草甘膦高效经济的应用技术提供依据。草甘膦是防除茅草的高效药剂,其效果受剂量、施药期、用水量、土壤湿度和水质等因素影响。施药期是影响草甘膦除茅效果的主要因素。施药适期为3叶中期,此生育期的茅草展着药剂多,药剂下行传导量较大、茅草根茎含糖量低、抗药性弱,因此效果高。土壤湿度对草甘膦的下行传导有一定影响。土壤湿度高,药剂下行传导多、药效好;含土量为2%的浑浊水或相当于二倍草甘膦浓度的三氯化铁、硝酸铝对草甘膦的活性有一定拮抗作用。硫酸铵对草甘膦的除茅效果有增效作用,而且在草甘膦低剂量下增效作用大。
This article from 1981 to 1982, the results of the study, the purpose is to glyphosate efficient and economical application of technology to provide the basis. Glyphosate is a highly effective herbicide for controlling thatch grass and its effects are influenced by factors such as dosage, application period, water consumption, soil moisture and water quality. The application period is the main factor that affects glyphosate removal efficiency. Mid-application period of three leaves, the growth of thatch show more agents, agents greater downward conductance, thatch grass sugar content is low, resistance is weak, so the effect is high. Soil moisture has a certain influence on the downward conduction of glyphosate. Soil moisture is high, medicine is more conductive downwards and has good efficacy. Turbid water containing 2% of soil or ferric chloride and aluminum nitrate equivalent to twice the concentration of glyphosate have some antagonistic effects on the activity of glyphosate. Ammonium sulfate has a synergistic effect on the effect of glyphosate addition but also has a synergistic effect at a low dose of glyphosate.