Effects of Pig Manure Type of Organic Fertilizer on Soil Fertility of Spring Maize Planting Land and Yield of Spring Maize

The effects of combined application of pig manure type of organic fertilizer and inorganic fertilizer on soil fertility and yield of spring maize were studied by using field plot experiment.The results showed that in comparison with inorganic fertilizer with the same amount of nutrition,combined application of pig manure type of organic fertilizer and inorganic fertilizer can increase the contents of soil available N and soil available P but no significant affection on soil available K during the growing time of spring maize;pig manure type organic fertilizer can increase the 100-seeds weight,the yield and the dry matters in plant aerial part of spring maize;among all of the treatments,the combined application of chemical fertilizer and pig manure composting(chemical N fertilizer account for 90% and organic N fertilizer account for 10%) had the best effect.