Effect of Poultry Manure in Combination with Straw on the Biological Properties of Soddy-Podzolic Soil and the Yielding Capacity of Grain Crops

摘要

Effect of the double application of high doses of poultry manure in combination with straw on the biological state, nitrogen status, and organic matter of sandy loamy soddy-podzolic soil and the yield of grain crops has been studied in a field experiment. It has been found that the application of poultry manure with straw favors the increase in the abundance, activity, and biomass of soil microorganisms; the decrease in the excessive accumulation of mineral nitrogen due to its biological immobilization without reducing the yield of grain crops; and the accumulation of organic nitrogen and carbon in the plow layer of soil.