Abstract: Effects of applying different animal manures on the physicochemical properties, respiration rate and organic matter content of soil, and biological characteristics and yield of maize were studied adopting two factors split plot experiment with manure type as main plot and fertilization level as subplot. The results demonstrated that applying different kinds and amounts of animal manures could enhance soil respiration rate, soil organic matter content,yield of maize and annual income effectively. Soil respiration rates, soil organic matter content, yield of maize and annual profit were higher, and were 6.0 μmol/(m²·s), 6.786 3 g/kg, 11 147.1 kg/ha and 10 719.2 yuan/ha,respectively, after 30.0 m³/ha of chicken manure application, and 5.6 μmol/(m²·s), 6.785 0 g/kg,11 095.5 kg/ha and 9 816.0 yuan/ha, respectively, after 60.0 m³/ha of sheep manure application, and 5.3 μmol/(m²·s), 6.783 3 g/kg, 10 692.75 kg/ha and 9 210.5 yuan/ha,respectively, after 60.0 m³/ha of pig manure application, and 4.6 μmol/(m²·s) and 6.780 0 g/kg and 10 691.15 kg/ha and 8 607.3 yuan/ha, respectively, after 90.0 m³/ha of cattle manure application. Accordingly, fertility of soil, yield of maize and economic profit increased after different animal manures application with the effects of chicken manure > sheep manure > pig manure > cattle manure, and the appropriate dosage was 30.0, 60.0, 60.0 and 90.0 m³/ha, respectively. Therefore, studying effects of different animal manures and the appropriate application dosage will play an important role in improving fertility of soil, enhancing yield of maize and increasing incomes of peasants.

Key words: Animal manures, Soil respiration rate, Yield of maize

CLC Number: 

• S513