The invention belongs to the technical field of
crop planting, and discloses a Yellow
River Delta winter wheat salt-tolerant variety screening and
cultivated land quality improving method, which comprises the following steps: step 1, indoor culture test, namely influence of different
salinity concentrations on
winter wheat budding, step 2, field positioning test, and step 3, field positioning test. The invention relates to screening of salt-resistant suitable-growth high-yield varieties of
winter wheat in mild
saline-alkali
cultivated land, and influences of organic materials with different carbon sources on
soil quality and
crop yield. According to the invention, the physiological status and agronomic traits of the current Yellow
River Delta slight
saline-
alkali soil winter wheat variety in different growth periods are explored, and a theoretical basis is provided for screening the salt-resistant, suitable-to-grow and high-yield winter wheat variety; the influence of different
carbon source materials on the physicochemical properties of the
saline-
alkali soil is analyzed, the microbial enhancement action mechanism in the saline-
alkali soil is explored, 4-5 salt-tolerant winter wheat varieties are screened for the theoretical basis for improving the quality and productivity of the saline-alkali soil of the Yellow
River delta, the physicochemical properties of the saline-alkali soil are improved, and the soil microbial
community structure and diversity are enhanced.