Study on the promotion for soil fertility of low-yield wheat land in Hebei Plain

To address the issue of low wheat yields and sustainable decreases in soil fertility throughout the marginal cropping zone of the Hebei Plain,a two-year field experiment was conducted in Qingyuan District of Baoding City and Gaocheng City,Hebei Province,China.The outcomes of combining inorganic fertilizer with and organic fertilizer(chicken manure)on wheat biomass,yield,nutrient uptake and use,soil organic matter and available nutrient were examined.The results highlighted that when compared with the traditional use of inorganic fertilizer alone,the combined application of inorganic fertilizer with the organic fertilizer,average grain yields were enhanced by 14%,N,P and K uptake increased by more than 10%,and the nutrient use efficiencies of N,P2O5 and K2O were 32.6%,62.8% and 23.2%.Soilorganic matter and available N,P and K increased by 14.2% on average.Based on the preplanting maize straw return,the combination of inorganic fertilizer amount same as the grain bringing from soil with 1 500kg/hm2 of the organic chicken manure based fertilizer can improve crop biomass and yield,enhance nutrient uptake and use,and improve soil fertility for future crops.