Composting and application of organic fertilizer

When composting unripe organic manure, the composting site should be selected in a place of leeward, sunny, and high dry terrain, agricultural film or cement ground should be laid on the composting ground, the livestock manure in farm manure should be caked and broken, and the straw should be crushed below 5 cm to be compacted, and about 3% of calcium superphosphate and dung should be mixed and piled up. The main purpose of adding calcium superphosphate is to prevent the loss of nitrogen in organic fertilizer and increase the activity of microorganisms. After the pile is made, flatten the surface with a shovel, wipe it with mud about 10 centimeters thick or cover it with agricultural film, and press it tightly around to create an anoxic environment and make it mature as soon as possible. The farm manure pile can be mature in about 60 days. When the color of organic fertilizer changes from the original gray to purple and black, the texture is loose and there is a bad smell, it shows that it is mature and should be applied to the orchard in time. When the fully mature shed bar is applied into the orchard, the parts other than the vertical projection of the crown should be selected, and the fertilizer ditch with 30-40 cm wide and 30-40 cm deep should be excavated, and the organic fertilizer should be evenly mixed with appropriate amount of chemical fertilizer (nitrogen, phosphate fertilizer) and topsoil, and then put into the bottom of the fertilization ditch, and finally covered with the bottom raw soil, or spread throughout the orchard, and then turned into the soil layer.