Abstract: Taking the single application of nitrogen and phosphate as control,pot experiment was conduced in order to investigate the effects of straw ash instead or partly instead of potassium carbonate and combined application with bacterial manure on nutrient absorption and distribution as well as yield on wheat. The results showed that the yield of grain all increased significantly by the application of potassium carbonate or straw ash. Compared to control1,the optimal yield was observed under the treatment A₁M and K₂A₂M,with the increment by 66.2% and 70.9%.The highest content and accumulation of nitrogen,phosphorous and potassium in grain were obtained under the treatment A₁M,while the highest content and accumulation of nitrogen,phosphorous and potassium in other part of wheat were obtained under treatment K₂A₂M. With the exception of control 1,the highest nutrient use efficiency of nitrogen,phosphorous and potassium were observed under the treatment A₁,K₁, and K₂A₂M respectively,while the maximum nutrient harvest index were all obtained under the treatment A₁M.

Key words: Straw ash, Bacterial manure, Wheat, Yield, Nutrient absorption and distribution

CLC Number: 

• S147.2

• S158.3