Environmental Chemistry

Besides, there also exists some microorganism
that would do harm to soil.
e.g. denitrifying bacteria can reduce nitrates to
nitrogen and release it to the air, thus bringing
loss of nitrogen to soil.
The application of deep ploughing, additional
use of organic fertilizer, spreading of lime to
overacid soil, reasonable irrigation and drain,
etc. can promote the propagation of
microorganism that are beneficial to the soil
and make them fully play the role of fertilization.