NH4+ N content did not exceed 10 mg kg−1, which was significantly lower than the NO3− N content, perhaps because NH4+ Ntransformed into NO3− N rapidly after the application of N fertilizer
NH4+ N content did not exceed 10 mg kg−1, which was significantly lower than the NO3− N content, perhaps because NH4+ Ntransformed into NO3− N rapidly after the application of N fertilizer