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AMB Express
Fig. 4 | AMB Express

Fig. 4

From: Straw mulching and nitrogen application altered ammonia oxidizers communities and improved soil quality in the alkaline purple soil of southwest China

Fig. 4

The abundance of amoA gene copies of ammonia oxidation archaea (a) and bacteria (b) in the different treatments. Data were mean ± S.D. S1: Straw with nitrogen, S0: no straw with nitrogen, N0: No nitrogen, N1: 120 kg N ha−1, N2: 180 kg N ha−1. *, and different letters indicate significate at the 5% probability level, respectively

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