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采用室内培养的方法,研究了2,4-D对土壤中脲酶、磷酸酶、过氧化氢酶活性的影响。结果表明:2,4-D对脲酶表现出先激活后抑制的作用,并且激活与抑制的天数几乎一致;对磷酸酶主要表现出抑制作用,开始有一段迟缓期随后表现激活作用紧接着又是抑制作用,主要趋势为抑制—激活—抑制;2,4-D对过氧化氢酶在中前期主要表现为抑制作用,后期出现刺激作用。
The effects of 2,4-D on the activities of urease, phosphatase and catalase in soil were studied by laboratory culture. The results showed that 2,4-D showed the first inhibition of urease activity, and the activation and inhibition of the number of days is almost the same; the main inhibition of phosphatase showed a period of late onset of activation followed by inhibition The main trend was inhibition-activation-inhibition. 2,4-D had a predominant inhibitory effect on catalase in the early prophase and stimulation at the later stage.