(1) Background: the broadcast is an outdated fertilization method with a low fertilizer-utilization rate and environmental problems, which seriously restricts development of agriculture. (2) Methods: Under machine-transplanted rice side-deep (MRSF) mode, five treatments were applied: 0 cm (D0), 5 (D5), 7.5 (D7.5), 10 (D10), comprising four different depths fertilization, no (CK). The yield, acc...

Ammonia (NH3) volatilized from cropland significantly impacts the ecological environment and human health. The identification quantification of atmospheric sources NH3 are therefore important for emission reduction air pollution control. Choosing appropriate nitrogen (N) fertilizer types is one key ways to reduce emissions agricultural systems due different N fertilizers with factors. natural a...