Effects of Herbicides on the Microbial Community and Urease Activity in the Rhizosphere Soil of Maize at Maturity Stage

Figure 2

Relative abundance of the top ten bacteria in the phylum (a) and genus (b) level in the 0-20 cm, 20-40, and 40-60 cm rhizosphere soils. Note: CK, the no herbicide negative control; A0, a preemergence nonspecific herbicide for maize, dinitraniline (the active control); A1-A4: four preemergence maize specific herbicides, nicosulfuron+atrazine, alachlor+acetochlor+atrazine, propisochlor+atrazine, and acetochlor+atrazine, respectively.

(a)

(b)