Varied with maize and soybean varieties, several scenarios of the seeding density and the amounts of base fertilizer were used over the course of the study (Table 2). Maize and soybean were seeded at depths of 3.0 cm and 2.5 cm, respectively. Base fertilizers were side-dressed into a furrow 6 cm deep and 10 cm from the seedbeds concurrent with the planting using the banding attachment on the no-till planter. An additional fertilizer N (135 kg ha1) was top dressed at the 6-leaf (V6) growth stage of maize. Weed control was done using broad-spectrum herbicide prior to and after sowing under NT. In RT and CT, a hoe was used to remove weed. Detailed information on cultural practiced is given by Fan et al. (2012).