The results showed, the nitrifying potential difference reached 5% significant level, among all treatments, and the nitrifying capacity was especially reduced by the treatments of 4, 5, 6 , 7.

实验中各处理均能够降低土壤硝化势，达到5％的差异显著水平； 处理4、5、6、7也能够限制抑制硝化强度。

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The results showed, the nitrifying potential difference reached 5% significant level, among all treatments, and the nitrifying capacity was especially reduced by the treatments of 4, 5, 6 , 7.

实验中各处理均能够降低土壤硝化势，达到5％的差异显著水平； 处理4、5、6、7也能够限制抑制硝化强度。

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