The invention discloses a
crop high-yield regulation and control method adopting microbial
fertilizer and a
straw returning deep ploughing mode. The method comprises the following steps: crushing previous
crop stubble
straw, returning the
straw to the field, and applying a compound
fertilizer base
fertilizer, a
solid microbial
organic fertilizer and a microbial
decomposition agent; after previous crops are harvested, completing fertilizer application, deeply ploughing soil through a moldboard turnover plow, and then carrying out
land leveling through a rotary cultivator; in the next year and the third year, adopting rotary
tillage with three years a as a cycle; and carrying out
sowing, irrigating, weeding and
disease and
pest control until the crops are mature, and harvesting the crops. According to the method, microbial materials are applied, harmful
bacteria in soil can be inhibited,
root growth is promoted, and root activity is improved; and in the later stage of
crop growth,
root system aging is delayed, good water and fertilizer absorption is kept, overground photosynthetic production and later-stage substance transfer are effectively supported, the fertilizer
utilization rate is increased, and the economic yield is increased.